./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya --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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:17:58,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:17:58,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:17:58,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:17:58,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:17:58,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:17:58,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:17:58,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:17:58,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:17:58,876 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:17:58,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:17:58,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:17:58,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:17:58,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:17:58,878 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:17:58,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:17:58,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:17:58,880 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:17:58,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:17:58,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:17:58,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:17:58,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:17:58,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:17:58,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:17:58,883 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:17:58,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:17:58,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:17:58,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:17:58,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:17:58,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:17:58,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:17:58,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:17:58,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:17:58,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:17:58,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:17:58,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:17:58,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:17:58,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:17:58,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:17:58,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:17:58,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:17:58,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:17:58,889 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2023-11-29 05:17:59,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:17:59,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:17:59,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:17:59,106 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:17:59,106 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:17:59,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2023-11-29 05:18:01,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:18:02,160 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:18:02,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2023-11-29 05:18:02,186 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/data/71a406d8a/c47edf4e5a2c4544bb08f60d3c17c12d/FLAGd3678370c [2023-11-29 05:18:02,202 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/data/71a406d8a/c47edf4e5a2c4544bb08f60d3c17c12d [2023-11-29 05:18:02,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:18:02,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:18:02,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:18:02,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:18:02,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:18:02,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:02,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7908d3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02, skipping insertion in model container [2023-11-29 05:18:02,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:02,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:18:02,734 WARN L240 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_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2023-11-29 05:18:02,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:18:02,840 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:18:02,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-29 05:18:02,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2023-11-29 05:18:02,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2023-11-29 05:18:02,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2023-11-29 05:18:02,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2023-11-29 05:18:02,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2023-11-29 05:18:02,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2023-11-29 05:18:02,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2023-11-29 05:18:02,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2023-11-29 05:18:02,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2023-11-29 05:18:02,921 WARN L240 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_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2023-11-29 05:18:02,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:18:02,978 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:18:02,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02 WrapperNode [2023-11-29 05:18:02,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:18:02,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:18:02,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:18:02,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:18:02,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,074 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 861 [2023-11-29 05:18:03,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:18:03,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:18:03,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:18:03,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:18:03,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,127 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-29 05:18:03,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:18:03,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:18:03,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:18:03,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:18:03,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (1/1) ... [2023-11-29 05:18:03,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:18:03,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:03,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:18:03,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:18:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-29 05:18:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-29 05:18:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:18:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-29 05:18:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-29 05:18:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-29 05:18:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-29 05:18:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-11-29 05:18:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-11-29 05:18:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 05:18:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 05:18:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 05:18:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 05:18:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-29 05:18:03,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-29 05:18:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 05:18:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 05:18:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-29 05:18:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-29 05:18:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 05:18:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 05:18:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 05:18:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 05:18:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 05:18:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 05:18:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 05:18:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 05:18:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 05:18:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 05:18:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 05:18:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 05:18:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 05:18:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 05:18:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 05:18:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 05:18:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 05:18:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 05:18:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 05:18:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 05:18:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 05:18:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 05:18:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:18:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:18:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:18:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:18:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:18:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 05:18:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 05:18:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 05:18:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 05:18:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 05:18:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 05:18:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 05:18:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 05:18:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-29 05:18:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-29 05:18:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 05:18:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 05:18:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 05:18:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 05:18:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 05:18:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 05:18:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:18:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:18:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 05:18:03,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 05:18:03,494 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:18:03,498 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:18:04,622 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:18:04,719 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:18:04,719 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 05:18:04,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:18:04 BoogieIcfgContainer [2023-11-29 05:18:04,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:18:04,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:18:04,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:18:04,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:18:04,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:18:02" (1/3) ... [2023-11-29 05:18:04,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eda087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:18:04, skipping insertion in model container [2023-11-29 05:18:04,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:02" (2/3) ... [2023-11-29 05:18:04,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eda087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:18:04, skipping insertion in model container [2023-11-29 05:18:04,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:18:04" (3/3) ... [2023-11-29 05:18:04,729 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2023-11-29 05:18:04,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:18:04,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:18:04,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:18:04,820 INFO L357 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, mHoare=true, 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;@c081ce4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:18:04,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:18:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 452 states have (on average 1.7278761061946903) internal successors, (781), 470 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-29 05:18:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:18:04,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:04,860 INFO L195 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] [2023-11-29 05:18:04,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:04,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash -11043965, now seen corresponding path program 1 times [2023-11-29 05:18:04,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:04,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044835368] [2023-11-29 05:18:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:18:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:18:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 05:18:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:18:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:18:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:18:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:18:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:18:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:18:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:18:05,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044835368] [2023-11-29 05:18:05,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044835368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:05,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638606932] [2023-11-29 05:18:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:05,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:05,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:05,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:05,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:18:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:18:06,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:18:06,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:06,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638606932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:06,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:06,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-11-29 05:18:06,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062513818] [2023-11-29 05:18:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:06,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:18:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:18:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:06,076 INFO L87 Difference]: Start difference. First operand has 579 states, 452 states have (on average 1.7278761061946903) internal successors, (781), 470 states have internal predecessors, (781), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:06,200 INFO L93 Difference]: Finished difference Result 1142 states and 1951 transitions. [2023-11-29 05:18:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:18:06,202 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-29 05:18:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:06,221 INFO L225 Difference]: With dead ends: 1142 [2023-11-29 05:18:06,221 INFO L226 Difference]: Without dead ends: 573 [2023-11-29 05:18:06,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:06,234 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:06,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 953 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-11-29 05:18:06,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2023-11-29 05:18:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.7037861915367483) internal successors, (765), 465 states have internal predecessors, (765), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 05:18:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 962 transitions. [2023-11-29 05:18:06,322 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 962 transitions. Word has length 103 [2023-11-29 05:18:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:06,324 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 962 transitions. [2023-11-29 05:18:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 962 transitions. [2023-11-29 05:18:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:18:06,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:06,334 INFO L195 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] [2023-11-29 05:18:06,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:18:06,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:18:06,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:06,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:06,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1509033501, now seen corresponding path program 1 times [2023-11-29 05:18:06,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:06,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208193055] [2023-11-29 05:18:06,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:06,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:18:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:18:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 05:18:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:18:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:18:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:18:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:18:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:18:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:18:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:18:06,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:06,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208193055] [2023-11-29 05:18:06,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208193055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:06,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878964284] [2023-11-29 05:18:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:06,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:06,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:06,964 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:06,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:18:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:07,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:18:07,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:18:07,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878964284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:07,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:07,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-29 05:18:07,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647530591] [2023-11-29 05:18:07,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:07,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:18:07,350 INFO L87 Difference]: Start difference. First operand 573 states and 962 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:07,524 INFO L93 Difference]: Finished difference Result 1684 states and 2867 transitions. [2023-11-29 05:18:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:07,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-29 05:18:07,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:07,538 INFO L225 Difference]: With dead ends: 1684 [2023-11-29 05:18:07,538 INFO L226 Difference]: Without dead ends: 1126 [2023-11-29 05:18:07,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:18:07,545 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 956 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:07,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1925 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-29 05:18:07,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1117. [2023-11-29 05:18:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 883 states have (on average 1.7112117780294451) internal successors, (1511), 912 states have internal predecessors, (1511), 188 states have call successors, (188), 47 states have call predecessors, (188), 45 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-29 05:18:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1895 transitions. [2023-11-29 05:18:07,633 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1895 transitions. Word has length 103 [2023-11-29 05:18:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:07,634 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1895 transitions. [2023-11-29 05:18:07,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1895 transitions. [2023-11-29 05:18:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:18:07,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:07,641 INFO L195 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] [2023-11-29 05:18:07,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:18:07,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:07,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:07,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2084333921, now seen corresponding path program 1 times [2023-11-29 05:18:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554588066] [2023-11-29 05:18:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:07,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:18:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:18:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 05:18:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:18:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:18:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:18:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:18:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:18:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:18:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:18:08,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554588066] [2023-11-29 05:18:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554588066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:08,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759525104] [2023-11-29 05:18:08,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:08,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:08,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:08,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:08,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:18:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:08,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 1366 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:18:08,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:18:08,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759525104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:08,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:08,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-29 05:18:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188182952] [2023-11-29 05:18:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:08,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:18:08,588 INFO L87 Difference]: Start difference. First operand 1117 states and 1895 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:08,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:08,753 INFO L93 Difference]: Finished difference Result 2240 states and 3803 transitions. [2023-11-29 05:18:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:18:08,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-29 05:18:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:08,764 INFO L225 Difference]: With dead ends: 2240 [2023-11-29 05:18:08,764 INFO L226 Difference]: Without dead ends: 1126 [2023-11-29 05:18:08,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:08,773 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 26 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:08,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2787 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-29 05:18:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2023-11-29 05:18:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 891 states have (on average 1.7115600448933783) internal successors, (1525), 920 states have internal predecessors, (1525), 188 states have call successors, (188), 48 states have call predecessors, (188), 46 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-29 05:18:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1909 transitions. [2023-11-29 05:18:08,837 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1909 transitions. Word has length 103 [2023-11-29 05:18:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:08,838 INFO L495 AbstractCegarLoop]: Abstraction has 1126 states and 1909 transitions. [2023-11-29 05:18:08,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1909 transitions. [2023-11-29 05:18:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 05:18:08,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:08,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:08,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:18:09,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:09,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:09,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2119825341, now seen corresponding path program 1 times [2023-11-29 05:18:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870511481] [2023-11-29 05:18:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:18:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 05:18:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:18:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:18:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:18:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 05:18:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 05:18:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:18:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:18:09,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:09,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870511481] [2023-11-29 05:18:09,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870511481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:09,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868307483] [2023-11-29 05:18:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:09,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:09,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:09,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:09,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:18:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:09,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:18:09,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:09,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868307483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:09,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:09,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-29 05:18:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148874716] [2023-11-29 05:18:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:09,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:18:09,871 INFO L87 Difference]: Start difference. First operand 1126 states and 1909 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:10,159 INFO L93 Difference]: Finished difference Result 2291 states and 3897 transitions. [2023-11-29 05:18:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:18:10,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-11-29 05:18:10,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:10,167 INFO L225 Difference]: With dead ends: 2291 [2023-11-29 05:18:10,167 INFO L226 Difference]: Without dead ends: 1170 [2023-11-29 05:18:10,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:18:10,173 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 168 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:10,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2633 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:18:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-29 05:18:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1170. [2023-11-29 05:18:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 934 states have (on average 1.721627408993576) internal successors, (1608), 963 states have internal predecessors, (1608), 188 states have call successors, (188), 49 states have call predecessors, (188), 47 states have return successors, (196), 183 states have call predecessors, (196), 184 states have call successors, (196) [2023-11-29 05:18:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1992 transitions. [2023-11-29 05:18:10,218 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1992 transitions. Word has length 105 [2023-11-29 05:18:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:10,218 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1992 transitions. [2023-11-29 05:18:10,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1992 transitions. [2023-11-29 05:18:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 05:18:10,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:10,222 INFO L195 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] [2023-11-29 05:18:10,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:18:10,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:10,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:10,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:10,423 INFO L85 PathProgramCache]: Analyzing trace with hash 881188777, now seen corresponding path program 1 times [2023-11-29 05:18:10,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:10,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720970094] [2023-11-29 05:18:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:18:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:18:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:18:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:18:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 05:18:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 05:18:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 05:18:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 05:18:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:18:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720970094] [2023-11-29 05:18:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720970094] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696694822] [2023-11-29 05:18:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:10,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:10,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:10,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:18:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:11,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:18:11,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:11,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:11,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696694822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:11,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-29 05:18:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925526952] [2023-11-29 05:18:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:11,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:18:11,357 INFO L87 Difference]: Start difference. First operand 1170 states and 1992 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:11,580 INFO L93 Difference]: Finished difference Result 2368 states and 4029 transitions. [2023-11-29 05:18:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:11,580 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-11-29 05:18:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:11,590 INFO L225 Difference]: With dead ends: 2368 [2023-11-29 05:18:11,590 INFO L226 Difference]: Without dead ends: 1203 [2023-11-29 05:18:11,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:18:11,599 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 113 mSDsluCounter, 4561 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5493 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:11,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5493 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-29 05:18:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1182. [2023-11-29 05:18:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 943 states have (on average 1.7200424178154825) internal successors, (1622), 974 states have internal predecessors, (1622), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-29 05:18:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 2012 transitions. [2023-11-29 05:18:11,659 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 2012 transitions. Word has length 107 [2023-11-29 05:18:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:11,659 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 2012 transitions. [2023-11-29 05:18:11,659 INFO L496 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2012 transitions. [2023-11-29 05:18:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 05:18:11,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:11,665 INFO L195 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] [2023-11-29 05:18:11,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:18:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:11,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:11,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1751476944, now seen corresponding path program 1 times [2023-11-29 05:18:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:11,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176943151] [2023-11-29 05:18:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:11,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:18:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:18:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:18:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:18:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:18:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:18:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:18:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:18:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176943151] [2023-11-29 05:18:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176943151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142445717] [2023-11-29 05:18:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:12,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:12,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:12,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:12,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:18:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:12,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:18:12,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:12,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:12,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142445717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:12,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:12,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-29 05:18:12,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415037887] [2023-11-29 05:18:12,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:12,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:18:12,681 INFO L87 Difference]: Start difference. First operand 1182 states and 2012 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:12,882 INFO L93 Difference]: Finished difference Result 2386 states and 4058 transitions. [2023-11-29 05:18:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-11-29 05:18:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:12,892 INFO L225 Difference]: With dead ends: 2386 [2023-11-29 05:18:12,892 INFO L226 Difference]: Without dead ends: 1211 [2023-11-29 05:18:12,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:12,899 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 124 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5487 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:12,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5487 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-11-29 05:18:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1182. [2023-11-29 05:18:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 943 states have (on average 1.7200424178154825) internal successors, (1622), 974 states have internal predecessors, (1622), 189 states have call successors, (189), 49 states have call predecessors, (189), 49 states have return successors, (201), 184 states have call predecessors, (201), 185 states have call successors, (201) [2023-11-29 05:18:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 2012 transitions. [2023-11-29 05:18:12,956 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 2012 transitions. Word has length 108 [2023-11-29 05:18:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:12,957 INFO L495 AbstractCegarLoop]: Abstraction has 1182 states and 2012 transitions. [2023-11-29 05:18:12,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 2012 transitions. [2023-11-29 05:18:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 05:18:12,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:12,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:12,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:18:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:18:13,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:13,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1592956374, now seen corresponding path program 1 times [2023-11-29 05:18:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515527342] [2023-11-29 05:18:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 05:18:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:18:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:18:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:18:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:18:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:18:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:18:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:18:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:18:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:18:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515527342] [2023-11-29 05:18:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515527342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431768943] [2023-11-29 05:18:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:13,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:13,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:13,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:18:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:13,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:18:13,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:18:13,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:13,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431768943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:13,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:13,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-29 05:18:13,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898534682] [2023-11-29 05:18:13,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:13,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:13,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:18:13,837 INFO L87 Difference]: Start difference. First operand 1182 states and 2012 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:13,971 INFO L93 Difference]: Finished difference Result 2374 states and 4038 transitions. [2023-11-29 05:18:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:18:13,972 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-11-29 05:18:13,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:13,981 INFO L225 Difference]: With dead ends: 2374 [2023-11-29 05:18:13,982 INFO L226 Difference]: Without dead ends: 1193 [2023-11-29 05:18:13,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:13,989 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 20 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:13,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2788 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-11-29 05:18:14,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1191. [2023-11-29 05:18:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-29 05:18:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-29 05:18:14,047 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 108 [2023-11-29 05:18:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:14,047 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-29 05:18:14,047 INFO L496 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-29 05:18:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 05:18:14,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:14,053 INFO L195 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] [2023-11-29 05:18:14,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:18:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:18:14,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:14,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash -411138331, now seen corresponding path program 1 times [2023-11-29 05:18:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073225472] [2023-11-29 05:18:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:18:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:18:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:18:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:18:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 05:18:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:18:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 05:18:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:18:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:14,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073225472] [2023-11-29 05:18:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073225472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406650180] [2023-11-29 05:18:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:14,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:14,655 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:14,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:18:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:14,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:18:14,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:15,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406650180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:15,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-29 05:18:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130566039] [2023-11-29 05:18:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:15,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:18:15,050 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:15,243 INFO L93 Difference]: Finished difference Result 2395 states and 4053 transitions. [2023-11-29 05:18:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-29 05:18:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:15,253 INFO L225 Difference]: With dead ends: 2395 [2023-11-29 05:18:15,254 INFO L226 Difference]: Without dead ends: 1222 [2023-11-29 05:18:15,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:15,261 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 135 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5475 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:15,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 5475 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2023-11-29 05:18:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1191. [2023-11-29 05:18:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-29 05:18:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-29 05:18:15,340 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 109 [2023-11-29 05:18:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:15,340 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-29 05:18:15,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-29 05:18:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 05:18:15,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:15,347 INFO L195 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] [2023-11-29 05:18:15,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:18:15,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:15,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:15,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:15,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1583551965, now seen corresponding path program 1 times [2023-11-29 05:18:15,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:15,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637837833] [2023-11-29 05:18:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:15,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:18:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:18:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:18:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:18:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 05:18:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:18:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 05:18:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:18:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637837833] [2023-11-29 05:18:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637837833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709271469] [2023-11-29 05:18:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:15,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:15,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:18:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:16,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:18:16,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:16,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:16,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709271469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:16,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:16,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-29 05:18:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3237123] [2023-11-29 05:18:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:16,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:18:16,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:18:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:16,334 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:16,568 INFO L93 Difference]: Finished difference Result 2397 states and 4056 transitions. [2023-11-29 05:18:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:18:16,569 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-11-29 05:18:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:16,602 INFO L225 Difference]: With dead ends: 2397 [2023-11-29 05:18:16,602 INFO L226 Difference]: Without dead ends: 1224 [2023-11-29 05:18:16,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:18:16,609 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 131 mSDsluCounter, 5445 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 6368 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:16,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 6368 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:16,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-29 05:18:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1191. [2023-11-29 05:18:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-29 05:18:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-29 05:18:16,664 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 109 [2023-11-29 05:18:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:16,664 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-29 05:18:16,664 INFO L496 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-29 05:18:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 05:18:16,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:16,670 INFO L195 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] [2023-11-29 05:18:16,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:18:16,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:16,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:16,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash 490820428, now seen corresponding path program 1 times [2023-11-29 05:18:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:16,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964740501] [2023-11-29 05:18:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:16,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:18:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:18:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:18:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:18:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:18:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 05:18:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:18:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:18:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:17,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:17,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964740501] [2023-11-29 05:18:17,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964740501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948439727] [2023-11-29 05:18:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:17,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:17,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:17,226 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:17,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:18:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:17,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:18:17,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:17,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:17,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948439727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:17,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:17,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-29 05:18:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382395255] [2023-11-29 05:18:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:17,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:18:17,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:17,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:18:17,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:17,591 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:17,842 INFO L93 Difference]: Finished difference Result 2397 states and 4056 transitions. [2023-11-29 05:18:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:18:17,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-11-29 05:18:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:17,850 INFO L225 Difference]: With dead ends: 2397 [2023-11-29 05:18:17,850 INFO L226 Difference]: Without dead ends: 1224 [2023-11-29 05:18:17,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:18:17,856 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 141 mSDsluCounter, 5427 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6349 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:17,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6349 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-11-29 05:18:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1191. [2023-11-29 05:18:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-29 05:18:17,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-29 05:18:17,907 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 110 [2023-11-29 05:18:17,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:17,907 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-29 05:18:17,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-29 05:18:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 05:18:17,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:17,914 INFO L195 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] [2023-11-29 05:18:17,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:18:18,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:18:18,114 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:18,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash 300604446, now seen corresponding path program 1 times [2023-11-29 05:18:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:18,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130618215] [2023-11-29 05:18:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:18,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 05:18:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:18:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:18:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:18:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:18:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 05:18:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:18:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:18,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130618215] [2023-11-29 05:18:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130618215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503096378] [2023-11-29 05:18:18,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:18,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:18,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:18,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:18,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:18:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:18,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:18:18,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:18,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:18,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503096378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:18,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:18,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-29 05:18:18,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044809569] [2023-11-29 05:18:18,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:18:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:18:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:18,794 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:19,039 INFO L93 Difference]: Finished difference Result 2389 states and 4042 transitions. [2023-11-29 05:18:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:18:19,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-11-29 05:18:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:19,047 INFO L225 Difference]: With dead ends: 2389 [2023-11-29 05:18:19,047 INFO L226 Difference]: Without dead ends: 1216 [2023-11-29 05:18:19,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:18:19,053 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 151 mSDsluCounter, 5415 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 6337 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:19,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 6337 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-11-29 05:18:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1191. [2023-11-29 05:18:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7108307045215563) internal successors, (1627), 982 states have internal predecessors, (1627), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-29 05:18:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2016 transitions. [2023-11-29 05:18:19,100 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2016 transitions. Word has length 111 [2023-11-29 05:18:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:19,101 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2016 transitions. [2023-11-29 05:18:19,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:19,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2016 transitions. [2023-11-29 05:18:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 05:18:19,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:19,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:19,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 05:18:19,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:18:19,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:19,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1296974720, now seen corresponding path program 1 times [2023-11-29 05:18:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:19,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966487528] [2023-11-29 05:18:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 05:18:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:18:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:18:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:18:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:18:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 05:18:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:18:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:18:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966487528] [2023-11-29 05:18:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966487528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:19,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246414635] [2023-11-29 05:18:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:19,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:19,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:19,580 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:19,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:18:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:19,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:18:19,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:18:19,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:19,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246414635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:19,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:19,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 05:18:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628118605] [2023-11-29 05:18:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:19,894 INFO L87 Difference]: Start difference. First operand 1191 states and 2016 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:19,998 INFO L93 Difference]: Finished difference Result 2353 states and 3989 transitions. [2023-11-29 05:18:19,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:18:19,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2023-11-29 05:18:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:20,007 INFO L225 Difference]: With dead ends: 2353 [2023-11-29 05:18:20,007 INFO L226 Difference]: Without dead ends: 1191 [2023-11-29 05:18:20,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:18:20,014 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 35 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:20,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2786 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2023-11-29 05:18:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2023-11-29 05:18:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 951 states have (on average 1.7055730809674028) internal successors, (1622), 982 states have internal predecessors, (1622), 189 states have call successors, (189), 50 states have call predecessors, (189), 50 states have return successors, (200), 184 states have call predecessors, (200), 185 states have call successors, (200) [2023-11-29 05:18:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2011 transitions. [2023-11-29 05:18:20,063 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2011 transitions. Word has length 111 [2023-11-29 05:18:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:20,064 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 2011 transitions. [2023-11-29 05:18:20,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2011 transitions. [2023-11-29 05:18:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 05:18:20,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:20,069 INFO L195 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] [2023-11-29 05:18:20,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 05:18:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:18:20,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:20,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1745124619, now seen corresponding path program 1 times [2023-11-29 05:18:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:20,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462746207] [2023-11-29 05:18:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:18:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:18:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:18:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:18:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:18:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:18:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 05:18:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:18:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462746207] [2023-11-29 05:18:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462746207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163373411] [2023-11-29 05:18:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:20,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:20,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:20,624 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:20,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:18:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:20,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:18:20,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:18:20,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:20,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163373411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:20,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:20,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-29 05:18:20,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532561315] [2023-11-29 05:18:20,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:20,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:20,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:18:20,927 INFO L87 Difference]: Start difference. First operand 1191 states and 2011 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:21,096 INFO L93 Difference]: Finished difference Result 2349 states and 3980 transitions. [2023-11-29 05:18:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:18:21,097 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-11-29 05:18:21,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:21,106 INFO L225 Difference]: With dead ends: 2349 [2023-11-29 05:18:21,106 INFO L226 Difference]: Without dead ends: 1243 [2023-11-29 05:18:21,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:18:21,113 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 239 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:21,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2622 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2023-11-29 05:18:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1235. [2023-11-29 05:18:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 994 states have (on average 1.715291750503018) internal successors, (1705), 1025 states have internal predecessors, (1705), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-29 05:18:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 2093 transitions. [2023-11-29 05:18:21,162 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 2093 transitions. Word has length 112 [2023-11-29 05:18:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:21,162 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 2093 transitions. [2023-11-29 05:18:21,162 INFO L496 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 2093 transitions. [2023-11-29 05:18:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:18:21,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:21,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:21,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:18:21,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:18:21,367 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:21,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:21,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1259957056, now seen corresponding path program 1 times [2023-11-29 05:18:21,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:21,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835636697] [2023-11-29 05:18:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:18:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:18:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:18:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:18:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:18:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 05:18:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 05:18:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:18:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835636697] [2023-11-29 05:18:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835636697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914800499] [2023-11-29 05:18:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:21,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:21,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:21,604 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:21,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:18:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:21,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:18:21,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:21,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914800499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:21,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:21,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-29 05:18:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064170742] [2023-11-29 05:18:21,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:21,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:18:21,971 INFO L87 Difference]: Start difference. First operand 1235 states and 2093 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:22,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:22,160 INFO L93 Difference]: Finished difference Result 2383 states and 4029 transitions. [2023-11-29 05:18:22,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:22,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-11-29 05:18:22,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:22,170 INFO L225 Difference]: With dead ends: 2383 [2023-11-29 05:18:22,170 INFO L226 Difference]: Without dead ends: 1277 [2023-11-29 05:18:22,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:18:22,177 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 113 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:22,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5494 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-29 05:18:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1247. [2023-11-29 05:18:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-29 05:18:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-11-29 05:18:22,226 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 113 [2023-11-29 05:18:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:22,226 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-11-29 05:18:22,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-11-29 05:18:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 05:18:22,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:22,231 INFO L195 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] [2023-11-29 05:18:22,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:18:22,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:18:22,432 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:22,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:22,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1299475515, now seen corresponding path program 1 times [2023-11-29 05:18:22,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:22,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495883039] [2023-11-29 05:18:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:22,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:18:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:18:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:18:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:18:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 05:18:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:18:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 05:18:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:18:22,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495883039] [2023-11-29 05:18:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495883039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183665329] [2023-11-29 05:18:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:22,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:22,689 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:22,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:18:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:22,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:18:22,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:23,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:23,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183665329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:23,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-29 05:18:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408413736] [2023-11-29 05:18:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:23,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:18:23,024 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:23,183 INFO L93 Difference]: Finished difference Result 2391 states and 4042 transitions. [2023-11-29 05:18:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-29 05:18:23,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:23,220 INFO L225 Difference]: With dead ends: 2391 [2023-11-29 05:18:23,220 INFO L226 Difference]: Without dead ends: 1285 [2023-11-29 05:18:23,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:18:23,224 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 124 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:23,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 5482 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-11-29 05:18:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1247. [2023-11-29 05:18:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-29 05:18:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-11-29 05:18:23,271 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 114 [2023-11-29 05:18:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:23,271 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-11-29 05:18:23,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-11-29 05:18:23,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 05:18:23,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:23,276 INFO L195 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] [2023-11-29 05:18:23,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 05:18:23,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:18:23,477 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:23,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash 401524923, now seen corresponding path program 1 times [2023-11-29 05:18:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:23,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264526412] [2023-11-29 05:18:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:18:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:18:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:18:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:18:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 05:18:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:18:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 05:18:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:18:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264526412] [2023-11-29 05:18:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264526412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015934137] [2023-11-29 05:18:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:23,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:23,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:23,718 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:23,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:18:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:23,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:18:23,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:24,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015934137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:24,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:24,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-29 05:18:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423951014] [2023-11-29 05:18:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:24,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:18:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:18:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:18:24,020 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:24,238 INFO L93 Difference]: Finished difference Result 2393 states and 4044 transitions. [2023-11-29 05:18:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:18:24,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2023-11-29 05:18:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:24,247 INFO L225 Difference]: With dead ends: 2393 [2023-11-29 05:18:24,247 INFO L226 Difference]: Without dead ends: 1287 [2023-11-29 05:18:24,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:24,251 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 132 mSDsluCounter, 5446 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6369 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:24,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6369 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2023-11-29 05:18:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1247. [2023-11-29 05:18:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7138584247258226) internal successors, (1719), 1036 states have internal predecessors, (1719), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-29 05:18:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2111 transitions. [2023-11-29 05:18:24,297 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2111 transitions. Word has length 114 [2023-11-29 05:18:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:24,298 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2111 transitions. [2023-11-29 05:18:24,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2111 transitions. [2023-11-29 05:18:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 05:18:24,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:24,302 INFO L195 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] [2023-11-29 05:18:24,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:18:24,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:18:24,503 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash 621339121, now seen corresponding path program 1 times [2023-11-29 05:18:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128028195] [2023-11-29 05:18:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 05:18:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:18:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:18:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:18:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:18:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 05:18:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:18:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 05:18:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:18:24,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128028195] [2023-11-29 05:18:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128028195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001185975] [2023-11-29 05:18:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:24,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:24,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:24,806 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:24,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:18:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:18:25,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:18:25,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001185975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:25,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:25,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 05:18:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358908615] [2023-11-29 05:18:25,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:25,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:18:25,092 INFO L87 Difference]: Start difference. First operand 1247 states and 2111 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:25,191 INFO L93 Difference]: Finished difference Result 2425 states and 4108 transitions. [2023-11-29 05:18:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:18:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-11-29 05:18:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:25,197 INFO L225 Difference]: With dead ends: 2425 [2023-11-29 05:18:25,198 INFO L226 Difference]: Without dead ends: 1247 [2023-11-29 05:18:25,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:18:25,201 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 10 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:25,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2788 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:25,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2023-11-29 05:18:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2023-11-29 05:18:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7108673978065803) internal successors, (1716), 1036 states have internal predecessors, (1716), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-29 05:18:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2108 transitions. [2023-11-29 05:18:25,245 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2108 transitions. Word has length 114 [2023-11-29 05:18:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:25,245 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2108 transitions. [2023-11-29 05:18:25,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2108 transitions. [2023-11-29 05:18:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:18:25,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:25,250 INFO L195 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] [2023-11-29 05:18:25,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:18:25,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:18:25,450 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:25,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash 801152322, now seen corresponding path program 1 times [2023-11-29 05:18:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:25,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865788400] [2023-11-29 05:18:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:18:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:18:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:18:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 05:18:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 05:18:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 05:18:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 05:18:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:18:25,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865788400] [2023-11-29 05:18:25,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865788400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:25,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902206591] [2023-11-29 05:18:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:25,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:25,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:25,672 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:25,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:18:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:25,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:18:25,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:18:25,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:25,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902206591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:25,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:25,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2023-11-29 05:18:25,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558710801] [2023-11-29 05:18:25,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:25,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:18:25,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:18:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:18:25,948 INFO L87 Difference]: Start difference. First operand 1247 states and 2108 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:26,192 INFO L93 Difference]: Finished difference Result 2385 states and 4028 transitions. [2023-11-29 05:18:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:18:26,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-29 05:18:26,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:26,199 INFO L225 Difference]: With dead ends: 2385 [2023-11-29 05:18:26,199 INFO L226 Difference]: Without dead ends: 1279 [2023-11-29 05:18:26,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:26,204 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 142 mSDsluCounter, 5419 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 6339 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:26,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 6339 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:18:26,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-29 05:18:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1247. [2023-11-29 05:18:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1003 states have (on average 1.7108673978065803) internal successors, (1716), 1036 states have internal predecessors, (1716), 190 states have call successors, (190), 51 states have call predecessors, (190), 53 states have return successors, (202), 185 states have call predecessors, (202), 186 states have call successors, (202) [2023-11-29 05:18:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2108 transitions. [2023-11-29 05:18:26,245 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2108 transitions. Word has length 115 [2023-11-29 05:18:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:26,246 INFO L495 AbstractCegarLoop]: Abstraction has 1247 states and 2108 transitions. [2023-11-29 05:18:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2108 transitions. [2023-11-29 05:18:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 05:18:26,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:26,250 INFO L195 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] [2023-11-29 05:18:26,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:18:26,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:18:26,450 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:26,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash -177939296, now seen corresponding path program 1 times [2023-11-29 05:18:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032002618] [2023-11-29 05:18:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:18:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:18:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:18:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:18:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 05:18:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 05:18:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 05:18:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:18:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:18:26,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:26,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032002618] [2023-11-29 05:18:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032002618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:26,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280077728] [2023-11-29 05:18:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:26,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:26,690 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:26,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:18:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:26,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:18:26,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:18:26,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:26,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280077728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:26,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:26,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-29 05:18:26,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857436368] [2023-11-29 05:18:26,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:26,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:26,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:26,986 INFO L87 Difference]: Start difference. First operand 1247 states and 2108 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:27,074 INFO L93 Difference]: Finished difference Result 2476 states and 4197 transitions. [2023-11-29 05:18:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:18:27,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-11-29 05:18:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:27,082 INFO L225 Difference]: With dead ends: 2476 [2023-11-29 05:18:27,083 INFO L226 Difference]: Without dead ends: 1213 [2023-11-29 05:18:27,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:18:27,087 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 13 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:27,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2787 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-11-29 05:18:27,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2023-11-29 05:18:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 972 states have (on average 1.6975308641975309) internal successors, (1650), 1003 states have internal predecessors, (1650), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-29 05:18:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 2038 transitions. [2023-11-29 05:18:27,129 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 2038 transitions. Word has length 116 [2023-11-29 05:18:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:27,130 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 2038 transitions. [2023-11-29 05:18:27,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 2038 transitions. [2023-11-29 05:18:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:18:27,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:27,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:27,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 05:18:27,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:27,334 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:27,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash -629606631, now seen corresponding path program 1 times [2023-11-29 05:18:27,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:27,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202145698] [2023-11-29 05:18:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:27,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:18:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:18:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:18:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:18:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 05:18:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:18:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:18:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:18:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:18:27,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202145698] [2023-11-29 05:18:27,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202145698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100244723] [2023-11-29 05:18:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:27,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:27,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:27,641 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:27,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:18:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:27,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:18:27,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:18:27,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:18:27,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100244723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:27,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:18:27,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-11-29 05:18:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865945782] [2023-11-29 05:18:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:18:27,911 INFO L87 Difference]: Start difference. First operand 1213 states and 2038 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:28,061 INFO L93 Difference]: Finished difference Result 2432 states and 4084 transitions. [2023-11-29 05:18:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-11-29 05:18:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:28,069 INFO L225 Difference]: With dead ends: 2432 [2023-11-29 05:18:28,069 INFO L226 Difference]: Without dead ends: 1232 [2023-11-29 05:18:28,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:18:28,073 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 134 mSDsluCounter, 4546 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5486 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:28,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5486 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-11-29 05:18:28,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1206. [2023-11-29 05:18:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 965 states have (on average 1.6932642487046632) internal successors, (1634), 996 states have internal predecessors, (1634), 189 states have call successors, (189), 51 states have call predecessors, (189), 51 states have return successors, (199), 184 states have call predecessors, (199), 185 states have call successors, (199) [2023-11-29 05:18:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2022 transitions. [2023-11-29 05:18:28,112 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2022 transitions. Word has length 117 [2023-11-29 05:18:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:28,112 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2022 transitions. [2023-11-29 05:18:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 05:18:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2022 transitions. [2023-11-29 05:18:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 05:18:28,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:28,116 INFO L195 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] [2023-11-29 05:18:28,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 05:18:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:28,317 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1803846594, now seen corresponding path program 1 times [2023-11-29 05:18:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750020194] [2023-11-29 05:18:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:18:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:18:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:18:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:18:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:18:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 05:18:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:18:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 05:18:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:18:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750020194] [2023-11-29 05:18:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750020194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:28,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:28,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:18:28,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408991961] [2023-11-29 05:18:28,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:28,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:18:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:18:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:28,625 INFO L87 Difference]: Start difference. First operand 1206 states and 2022 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:33,184 INFO L93 Difference]: Finished difference Result 2807 states and 4747 transitions. [2023-11-29 05:18:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:18:33,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-29 05:18:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:33,191 INFO L225 Difference]: With dead ends: 2807 [2023-11-29 05:18:33,191 INFO L226 Difference]: Without dead ends: 1697 [2023-11-29 05:18:33,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:18:33,194 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1548 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:33,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 1314 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:18:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-11-29 05:18:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1266. [2023-11-29 05:18:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1011 states have (on average 1.6844708209693373) internal successors, (1703), 1042 states have internal predecessors, (1703), 201 states have call successors, (201), 51 states have call predecessors, (201), 53 states have return successors, (220), 196 states have call predecessors, (220), 197 states have call successors, (220) [2023-11-29 05:18:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2124 transitions. [2023-11-29 05:18:33,389 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2124 transitions. Word has length 118 [2023-11-29 05:18:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:33,389 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 2124 transitions. [2023-11-29 05:18:33,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2124 transitions. [2023-11-29 05:18:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 05:18:33,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:33,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:33,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:18:33,392 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:33,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2101313970, now seen corresponding path program 1 times [2023-11-29 05:18:33,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:33,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704000364] [2023-11-29 05:18:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:33,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:18:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:18:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:18:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:18:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:18:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:18:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 05:18:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:18:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 05:18:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 05:18:33,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:33,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704000364] [2023-11-29 05:18:33,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704000364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:33,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:33,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:18:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494498763] [2023-11-29 05:18:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:33,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:18:33,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:18:33,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:33,647 INFO L87 Difference]: Start difference. First operand 1266 states and 2124 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:37,708 INFO L93 Difference]: Finished difference Result 2894 states and 4887 transitions. [2023-11-29 05:18:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:18:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-29 05:18:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:37,715 INFO L225 Difference]: With dead ends: 2894 [2023-11-29 05:18:37,715 INFO L226 Difference]: Without dead ends: 1633 [2023-11-29 05:18:37,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:18:37,718 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1483 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:37,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1292 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 05:18:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-29 05:18:37,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1239. [2023-11-29 05:18:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 987 states have (on average 1.67983789260385) internal successors, (1658), 1016 states have internal predecessors, (1658), 200 states have call successors, (200), 51 states have call predecessors, (200), 51 states have return successors, (217), 195 states have call predecessors, (217), 196 states have call successors, (217) [2023-11-29 05:18:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2075 transitions. [2023-11-29 05:18:37,891 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2075 transitions. Word has length 118 [2023-11-29 05:18:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:37,891 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 2075 transitions. [2023-11-29 05:18:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:18:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2075 transitions. [2023-11-29 05:18:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 05:18:37,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:37,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:37,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:18:37,894 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:37,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1730527367, now seen corresponding path program 1 times [2023-11-29 05:18:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:37,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760532552] [2023-11-29 05:18:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:37,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:37,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:18:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:18:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:18:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:18:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 05:18:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:18:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:18:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:18:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 05:18:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:18:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:38,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760532552] [2023-11-29 05:18:38,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760532552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:38,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:38,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:18:38,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243394416] [2023-11-29 05:18:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:38,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:18:38,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:18:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:38,183 INFO L87 Difference]: Start difference. First operand 1239 states and 2075 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:18:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:45,795 INFO L93 Difference]: Finished difference Result 4184 states and 7318 transitions. [2023-11-29 05:18:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:18:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 119 [2023-11-29 05:18:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:45,807 INFO L225 Difference]: With dead ends: 4184 [2023-11-29 05:18:45,807 INFO L226 Difference]: Without dead ends: 3026 [2023-11-29 05:18:45,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:18:45,812 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 4429 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 4030 mSolverCounterSat, 1349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 5379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1349 IncrementalHoareTripleChecker+Valid, 4030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:45,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4439 Valid, 1435 Invalid, 5379 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1349 Valid, 4030 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 05:18:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2023-11-29 05:18:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2352. [2023-11-29 05:18:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 1871 states have (on average 1.675040085515767) internal successors, (3134), 1927 states have internal predecessors, (3134), 383 states have call successors, (383), 96 states have call predecessors, (383), 97 states have return successors, (455), 376 states have call predecessors, (455), 377 states have call successors, (455) [2023-11-29 05:18:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3972 transitions. [2023-11-29 05:18:46,164 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3972 transitions. Word has length 119 [2023-11-29 05:18:46,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:46,164 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3972 transitions. [2023-11-29 05:18:46,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:18:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3972 transitions. [2023-11-29 05:18:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:18:46,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:46,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:18:46,167 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:46,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 631725454, now seen corresponding path program 1 times [2023-11-29 05:18:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094505930] [2023-11-29 05:18:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:18:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:18:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:18:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:18:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 05:18:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 05:18:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 05:18:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:18:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 05:18:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:18:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094505930] [2023-11-29 05:18:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094505930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:46,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:46,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:18:46,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606227755] [2023-11-29 05:18:46,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:46,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:18:46,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:18:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:46,445 INFO L87 Difference]: Start difference. First operand 2352 states and 3972 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:18:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:55,142 INFO L93 Difference]: Finished difference Result 8101 states and 14478 transitions. [2023-11-29 05:18:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:18:55,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2023-11-29 05:18:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:55,169 INFO L225 Difference]: With dead ends: 8101 [2023-11-29 05:18:55,169 INFO L226 Difference]: Without dead ends: 5830 [2023-11-29 05:18:55,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:18:55,178 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 4427 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 4101 mSolverCounterSat, 1306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1306 IncrementalHoareTripleChecker+Valid, 4101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:55,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 1524 Invalid, 5407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1306 Valid, 4101 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 05:18:55,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2023-11-29 05:18:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 4588. [2023-11-29 05:18:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 3647 states have (on average 1.6682204551686317) internal successors, (6084), 3757 states have internal predecessors, (6084), 751 states have call successors, (751), 186 states have call predecessors, (751), 189 states have return successors, (987), 740 states have call predecessors, (987), 741 states have call successors, (987) [2023-11-29 05:18:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7822 transitions. [2023-11-29 05:18:55,927 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7822 transitions. Word has length 120 [2023-11-29 05:18:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:55,927 INFO L495 AbstractCegarLoop]: Abstraction has 4588 states and 7822 transitions. [2023-11-29 05:18:55,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 05:18:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7822 transitions. [2023-11-29 05:18:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:18:55,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:55,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:18:55,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:18:55,930 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:55,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash 889807724, now seen corresponding path program 1 times [2023-11-29 05:18:55,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:55,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227675898] [2023-11-29 05:18:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:55,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:18:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:18:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:18:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:18:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:18:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:18:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:18:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:18:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:18:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 05:18:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 05:18:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:18:56,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:56,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227675898] [2023-11-29 05:18:56,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227675898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:56,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:56,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:18:56,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341655074] [2023-11-29 05:18:56,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:56,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:18:56,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:18:56,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:18:56,324 INFO L87 Difference]: Start difference. First operand 4588 states and 7822 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:03,538 INFO L93 Difference]: Finished difference Result 10576 states and 18504 transitions. [2023-11-29 05:19:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:19:03,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-11-29 05:19:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:03,569 INFO L225 Difference]: With dead ends: 10576 [2023-11-29 05:19:03,569 INFO L226 Difference]: Without dead ends: 6072 [2023-11-29 05:19:03,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:19:03,588 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1498 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 6248 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 6645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 6248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:03,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3282 Invalid, 6645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [397 Valid, 6248 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 05:19:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2023-11-29 05:19:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 4644. [2023-11-29 05:19:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4644 states, 3687 states have (on average 1.6609709791158123) internal successors, (6124), 3797 states have internal predecessors, (6124), 751 states have call successors, (751), 186 states have call predecessors, (751), 205 states have return successors, (1027), 756 states have call predecessors, (1027), 741 states have call successors, (1027) [2023-11-29 05:19:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4644 states to 4644 states and 7902 transitions. [2023-11-29 05:19:04,514 INFO L78 Accepts]: Start accepts. Automaton has 4644 states and 7902 transitions. Word has length 121 [2023-11-29 05:19:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:04,514 INFO L495 AbstractCegarLoop]: Abstraction has 4644 states and 7902 transitions. [2023-11-29 05:19:04,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4644 states and 7902 transitions. [2023-11-29 05:19:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 05:19:04,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:04,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:04,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:19:04,517 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:04,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash -242503301, now seen corresponding path program 1 times [2023-11-29 05:19:04,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:04,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005707030] [2023-11-29 05:19:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:19:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:19:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:19:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:19:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:19:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 05:19:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 05:19:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 05:19:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:19:04,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005707030] [2023-11-29 05:19:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005707030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:04,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:19:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719895338] [2023-11-29 05:19:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:04,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:19:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:19:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:19:04,918 INFO L87 Difference]: Start difference. First operand 4644 states and 7902 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:11,607 INFO L93 Difference]: Finished difference Result 10672 states and 18632 transitions. [2023-11-29 05:19:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:19:11,608 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-11-29 05:19:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:11,625 INFO L225 Difference]: With dead ends: 10672 [2023-11-29 05:19:11,625 INFO L226 Difference]: Without dead ends: 6112 [2023-11-29 05:19:11,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:19:11,640 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1483 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 5382 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 5775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 5382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:11,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2767 Invalid, 5775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [393 Valid, 5382 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 05:19:11,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2023-11-29 05:19:12,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 4652. [2023-11-29 05:19:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4652 states, 3695 states have (on average 1.6595399188092017) internal successors, (6132), 3797 states have internal predecessors, (6132), 751 states have call successors, (751), 186 states have call predecessors, (751), 205 states have return successors, (1027), 764 states have call predecessors, (1027), 741 states have call successors, (1027) [2023-11-29 05:19:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 7910 transitions. [2023-11-29 05:19:12,412 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 7910 transitions. Word has length 122 [2023-11-29 05:19:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:12,412 INFO L495 AbstractCegarLoop]: Abstraction has 4652 states and 7910 transitions. [2023-11-29 05:19:12,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 7910 transitions. [2023-11-29 05:19:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 05:19:12,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:12,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:12,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:19:12,415 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:12,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash -477927397, now seen corresponding path program 1 times [2023-11-29 05:19:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601245354] [2023-11-29 05:19:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:19:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:19:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:19:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:19:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:19:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 05:19:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 05:19:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 05:19:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:19:12,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:12,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601245354] [2023-11-29 05:19:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601245354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:12,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:12,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:19:12,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760355088] [2023-11-29 05:19:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:19:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:19:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:19:12,740 INFO L87 Difference]: Start difference. First operand 4652 states and 7910 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:18,244 INFO L93 Difference]: Finished difference Result 10468 states and 18212 transitions. [2023-11-29 05:19:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:19:18,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-11-29 05:19:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:18,262 INFO L225 Difference]: With dead ends: 10468 [2023-11-29 05:19:18,262 INFO L226 Difference]: Without dead ends: 5900 [2023-11-29 05:19:18,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:19:18,276 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1476 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:18,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1362 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:19:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2023-11-29 05:19:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 4646. [2023-11-29 05:19:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 3695 states have (on average 1.6584573748308524) internal successors, (6128), 3797 states have internal predecessors, (6128), 745 states have call successors, (745), 186 states have call predecessors, (745), 205 states have return successors, (1015), 758 states have call predecessors, (1015), 735 states have call successors, (1015) [2023-11-29 05:19:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 7888 transitions. [2023-11-29 05:19:19,119 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 7888 transitions. Word has length 122 [2023-11-29 05:19:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:19,120 INFO L495 AbstractCegarLoop]: Abstraction has 4646 states and 7888 transitions. [2023-11-29 05:19:19,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 7888 transitions. [2023-11-29 05:19:19,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 05:19:19,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:19,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:19:19,124 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:19,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1747948052, now seen corresponding path program 1 times [2023-11-29 05:19:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:19,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813540615] [2023-11-29 05:19:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:19:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:19:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:19:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:19:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 05:19:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 05:19:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 05:19:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:19:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:19:19,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:19,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813540615] [2023-11-29 05:19:19,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813540615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:19,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:19,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:19:19,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627093885] [2023-11-29 05:19:19,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:19:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:19,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:19:19,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:19:19,488 INFO L87 Difference]: Start difference. First operand 4646 states and 7888 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:27,026 INFO L93 Difference]: Finished difference Result 10666 states and 18516 transitions. [2023-11-29 05:19:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:19:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-11-29 05:19:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:27,045 INFO L225 Difference]: With dead ends: 10666 [2023-11-29 05:19:27,045 INFO L226 Difference]: Without dead ends: 6104 [2023-11-29 05:19:27,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:19:27,059 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1486 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 6335 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 6735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 6335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:27,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 3279 Invalid, 6735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [400 Valid, 6335 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 05:19:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2023-11-29 05:19:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 4648. [2023-11-29 05:19:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 3697 states have (on average 1.6581011631052205) internal successors, (6130), 3797 states have internal predecessors, (6130), 745 states have call successors, (745), 186 states have call predecessors, (745), 205 states have return successors, (1015), 760 states have call predecessors, (1015), 735 states have call successors, (1015) [2023-11-29 05:19:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 7890 transitions. [2023-11-29 05:19:27,905 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 7890 transitions. Word has length 124 [2023-11-29 05:19:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:27,906 INFO L495 AbstractCegarLoop]: Abstraction has 4648 states and 7890 transitions. [2023-11-29 05:19:27,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 05:19:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 7890 transitions. [2023-11-29 05:19:27,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 05:19:27,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:27,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:19:27,912 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:27,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash -860347271, now seen corresponding path program 1 times [2023-11-29 05:19:27,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:27,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023247550] [2023-11-29 05:19:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:19:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:19:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:19:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:19:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 05:19:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:19:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 05:19:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 05:19:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 05:19:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:19:28,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023247550] [2023-11-29 05:19:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023247550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:28,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:28,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:19:28,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387748165] [2023-11-29 05:19:28,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:28,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:19:28,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:28,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:19:28,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:19:28,228 INFO L87 Difference]: Start difference. First operand 4648 states and 7890 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 05:19:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:38,380 INFO L93 Difference]: Finished difference Result 13835 states and 24286 transitions. [2023-11-29 05:19:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:19:38,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2023-11-29 05:19:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:38,415 INFO L225 Difference]: With dead ends: 13835 [2023-11-29 05:19:38,415 INFO L226 Difference]: Without dead ends: 9271 [2023-11-29 05:19:38,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:19:38,434 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 3424 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 4139 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 5037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 4139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:38,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 1940 Invalid, 5037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [898 Valid, 4139 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 05:19:38,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9271 states. [2023-11-29 05:19:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9271 to 7559. [2023-11-29 05:19:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7559 states, 6088 states have (on average 1.6338699080157688) internal successors, (9947), 6270 states have internal predecessors, (9947), 1113 states have call successors, (1113), 298 states have call predecessors, (1113), 357 states have return successors, (1602), 1134 states have call predecessors, (1602), 1099 states have call successors, (1602) [2023-11-29 05:19:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7559 states to 7559 states and 12662 transitions. [2023-11-29 05:19:39,781 INFO L78 Accepts]: Start accepts. Automaton has 7559 states and 12662 transitions. Word has length 131 [2023-11-29 05:19:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:39,782 INFO L495 AbstractCegarLoop]: Abstraction has 7559 states and 12662 transitions. [2023-11-29 05:19:39,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 4 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-29 05:19:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7559 states and 12662 transitions. [2023-11-29 05:19:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 05:19:39,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:39,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:19:39,786 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 820024711, now seen corresponding path program 1 times [2023-11-29 05:19:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54271170] [2023-11-29 05:19:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:19:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:19:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:19:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:19:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:19:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:19:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:19:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 05:19:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 05:19:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 05:19:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:19:40,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:40,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54271170] [2023-11-29 05:19:40,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54271170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:40,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:40,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:19:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492916531] [2023-11-29 05:19:40,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:40,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:19:40,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:19:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:19:40,112 INFO L87 Difference]: Start difference. First operand 7559 states and 12662 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:19:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:46,962 INFO L93 Difference]: Finished difference Result 16499 states and 28464 transitions. [2023-11-29 05:19:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:19:46,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2023-11-29 05:19:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:46,992 INFO L225 Difference]: With dead ends: 16499 [2023-11-29 05:19:46,992 INFO L226 Difference]: Without dead ends: 9297 [2023-11-29 05:19:47,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:19:47,015 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1469 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1326 Invalid, 3151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 2756 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 05:19:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9297 states. [2023-11-29 05:19:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9297 to 7607. [2023-11-29 05:19:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7607 states, 6124 states have (on average 1.62949052906597) internal successors, (9979), 6306 states have internal predecessors, (9979), 1113 states have call successors, (1113), 310 states have call predecessors, (1113), 369 states have return successors, (1614), 1134 states have call predecessors, (1614), 1099 states have call successors, (1614) [2023-11-29 05:19:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7607 states to 7607 states and 12706 transitions. [2023-11-29 05:19:48,408 INFO L78 Accepts]: Start accepts. Automaton has 7607 states and 12706 transitions. Word has length 136 [2023-11-29 05:19:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:48,408 INFO L495 AbstractCegarLoop]: Abstraction has 7607 states and 12706 transitions. [2023-11-29 05:19:48,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:19:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7607 states and 12706 transitions. [2023-11-29 05:19:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 05:19:48,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:48,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:19:48,413 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:48,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:48,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2103047273, now seen corresponding path program 1 times [2023-11-29 05:19:48,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:48,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595328278] [2023-11-29 05:19:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:19:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:19:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:19:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:19:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:19:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:19:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:19:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 05:19:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 05:19:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 05:19:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:19:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:19:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595328278] [2023-11-29 05:19:48,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595328278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:48,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:48,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:19:48,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950664885] [2023-11-29 05:19:48,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:48,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:19:48,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:48,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:19:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:19:48,974 INFO L87 Difference]: Start difference. First operand 7607 states and 12706 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 05:20:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:06,098 INFO L93 Difference]: Finished difference Result 25837 states and 44904 transitions. [2023-11-29 05:20:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:20:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 140 [2023-11-29 05:20:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:06,189 INFO L225 Difference]: With dead ends: 25837 [2023-11-29 05:20:06,190 INFO L226 Difference]: Without dead ends: 19947 [2023-11-29 05:20:06,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:20:06,228 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 6072 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 9994 mSolverCounterSat, 2078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6082 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 12072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2078 IncrementalHoareTripleChecker+Valid, 9994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:06,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6082 Valid, 3487 Invalid, 12072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2078 Valid, 9994 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-29 05:20:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19947 states. [2023-11-29 05:20:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19947 to 15403. [2023-11-29 05:20:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15403 states, 12045 states have (on average 1.6136156081361561) internal successors, (19436), 12491 states have internal predecessors, (19436), 2584 states have call successors, (2584), 578 states have call predecessors, (2584), 773 states have return successors, (3904), 2681 states have call predecessors, (3904), 2558 states have call successors, (3904) [2023-11-29 05:20:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15403 states to 15403 states and 25924 transitions. [2023-11-29 05:20:09,685 INFO L78 Accepts]: Start accepts. Automaton has 15403 states and 25924 transitions. Word has length 140 [2023-11-29 05:20:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:09,686 INFO L495 AbstractCegarLoop]: Abstraction has 15403 states and 25924 transitions. [2023-11-29 05:20:09,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 05:20:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 15403 states and 25924 transitions. [2023-11-29 05:20:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 05:20:09,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:09,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:20:09,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 05:20:09,693 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:09,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:09,693 INFO L85 PathProgramCache]: Analyzing trace with hash 280810158, now seen corresponding path program 1 times [2023-11-29 05:20:09,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:09,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610937175] [2023-11-29 05:20:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:09,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:20:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:20:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:20:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:20:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:20:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:20:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:20:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:20:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:20:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:20:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 05:20:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 05:20:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:20:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:20:10,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:10,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610937175] [2023-11-29 05:20:10,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610937175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:10,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:10,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:20:10,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452457999] [2023-11-29 05:20:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:10,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:20:10,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:10,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:20:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:20:10,168 INFO L87 Difference]: Start difference. First operand 15403 states and 25924 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:20:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:19,846 INFO L93 Difference]: Finished difference Result 32387 states and 56141 transitions. [2023-11-29 05:20:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:20:19,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2023-11-29 05:20:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:19,924 INFO L225 Difference]: With dead ends: 32387 [2023-11-29 05:20:19,924 INFO L226 Difference]: Without dead ends: 20405 [2023-11-29 05:20:19,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:20:19,973 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1554 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:19,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 1007 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 05:20:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20405 states. [2023-11-29 05:20:23,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20405 to 17075. [2023-11-29 05:20:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17075 states, 13549 states have (on average 1.5986419661967672) internal successors, (21660), 14003 states have internal predecessors, (21660), 2736 states have call successors, (2736), 578 states have call predecessors, (2736), 789 states have return successors, (4168), 2841 states have call predecessors, (4168), 2710 states have call successors, (4168) [2023-11-29 05:20:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17075 states to 17075 states and 28564 transitions. [2023-11-29 05:20:23,687 INFO L78 Accepts]: Start accepts. Automaton has 17075 states and 28564 transitions. Word has length 137 [2023-11-29 05:20:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:23,687 INFO L495 AbstractCegarLoop]: Abstraction has 17075 states and 28564 transitions. [2023-11-29 05:20:23,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:20:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 17075 states and 28564 transitions. [2023-11-29 05:20:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 05:20:23,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:23,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:20:23,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 05:20:23,690 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:23,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:23,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1461724277, now seen corresponding path program 1 times [2023-11-29 05:20:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:23,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413467238] [2023-11-29 05:20:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:20:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:20:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:20:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:20:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:20:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:20:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:20:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:20:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:20:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:20:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:20:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 05:20:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:20:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:20:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:20:23,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413467238] [2023-11-29 05:20:23,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413467238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:23,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:23,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:20:23,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431521963] [2023-11-29 05:20:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:23,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:20:23,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:20:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:20:23,950 INFO L87 Difference]: Start difference. First operand 17075 states and 28564 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:20:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:33,979 INFO L93 Difference]: Finished difference Result 37051 states and 63936 transitions. [2023-11-29 05:20:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:20:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2023-11-29 05:20:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:34,065 INFO L225 Difference]: With dead ends: 37051 [2023-11-29 05:20:34,065 INFO L226 Difference]: Without dead ends: 20373 [2023-11-29 05:20:34,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:20:34,231 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1453 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:34,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1395 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 05:20:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20373 states. [2023-11-29 05:20:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20373 to 17155. [2023-11-29 05:20:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17155 states, 13613 states have (on average 1.5958275178138543) internal successors, (21724), 14075 states have internal predecessors, (21724), 2736 states have call successors, (2736), 610 states have call predecessors, (2736), 805 states have return successors, (3993), 2817 states have call predecessors, (3993), 2710 states have call successors, (3993) [2023-11-29 05:20:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17155 states to 17155 states and 28453 transitions. [2023-11-29 05:20:37,734 INFO L78 Accepts]: Start accepts. Automaton has 17155 states and 28453 transitions. Word has length 138 [2023-11-29 05:20:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:37,735 INFO L495 AbstractCegarLoop]: Abstraction has 17155 states and 28453 transitions. [2023-11-29 05:20:37,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:20:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 17155 states and 28453 transitions. [2023-11-29 05:20:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 05:20:37,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:37,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:20:37,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 05:20:37,738 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:37,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1632166792, now seen corresponding path program 1 times [2023-11-29 05:20:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:37,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670919083] [2023-11-29 05:20:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:37,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:20:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:20:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:20:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:20:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:20:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:20:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:20:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:20:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:20:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:20:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 05:20:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:20:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:20:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:20:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:38,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670919083] [2023-11-29 05:20:38,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670919083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:38,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:38,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:20:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334961146] [2023-11-29 05:20:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:38,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:20:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:20:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:20:38,149 INFO L87 Difference]: Start difference. First operand 17155 states and 28453 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 05:20:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:56,320 INFO L93 Difference]: Finished difference Result 37335 states and 63078 transitions. [2023-11-29 05:20:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 05:20:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 138 [2023-11-29 05:20:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:56,405 INFO L225 Difference]: With dead ends: 37335 [2023-11-29 05:20:56,405 INFO L226 Difference]: Without dead ends: 23625 [2023-11-29 05:20:56,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:20:56,453 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 3829 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 8359 mSolverCounterSat, 997 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3893 SdHoareTripleChecker+Valid, 3795 SdHoareTripleChecker+Invalid, 9356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 997 IncrementalHoareTripleChecker+Valid, 8359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:56,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3893 Valid, 3795 Invalid, 9356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [997 Valid, 8359 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-11-29 05:20:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23625 states. [2023-11-29 05:21:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23625 to 19909. [2023-11-29 05:21:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19909 states, 15937 states have (on average 1.5881282550040785) internal successors, (25310), 16417 states have internal predecessors, (25310), 2998 states have call successors, (2998), 722 states have call predecessors, (2998), 973 states have return successors, (4551), 3117 states have call predecessors, (4551), 2972 states have call successors, (4551) [2023-11-29 05:21:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19909 states to 19909 states and 32859 transitions. [2023-11-29 05:21:00,686 INFO L78 Accepts]: Start accepts. Automaton has 19909 states and 32859 transitions. Word has length 138 [2023-11-29 05:21:00,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:21:00,686 INFO L495 AbstractCegarLoop]: Abstraction has 19909 states and 32859 transitions. [2023-11-29 05:21:00,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 05:21:00,686 INFO L276 IsEmpty]: Start isEmpty. Operand 19909 states and 32859 transitions. [2023-11-29 05:21:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:21:00,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:21:00,690 INFO L195 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] [2023-11-29 05:21:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 05:21:00,690 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:21:00,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 669951093, now seen corresponding path program 1 times [2023-11-29 05:21:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:21:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349465042] [2023-11-29 05:21:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:21:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:21:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:21:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:21:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:21:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:21:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:21:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:21:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:21:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:21:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 05:21:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:21:00,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:21:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349465042] [2023-11-29 05:21:00,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349465042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:21:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971006320] [2023-11-29 05:21:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:21:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:21:00,950 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:21:00,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:21:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:01,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:21:01,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:21:01,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:21:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971006320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:21:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:21:01,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-29 05:21:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536849886] [2023-11-29 05:21:01,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:21:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:21:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:21:01,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:21:01,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:21:01,308 INFO L87 Difference]: Start difference. First operand 19909 states and 32859 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:21:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:21:07,416 INFO L93 Difference]: Finished difference Result 44595 states and 73660 transitions. [2023-11-29 05:21:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:21:07,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2023-11-29 05:21:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:21:07,500 INFO L225 Difference]: With dead ends: 44595 [2023-11-29 05:21:07,500 INFO L226 Difference]: Without dead ends: 29163 [2023-11-29 05:21:07,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:21:07,545 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 904 mSDsluCounter, 4887 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 6506 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:21:07,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 6506 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:21:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29163 states. [2023-11-29 05:21:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29163 to 26758. [2023-11-29 05:21:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26758 states, 21439 states have (on average 1.5840291058351603) internal successors, (33960), 22067 states have internal predecessors, (33960), 3993 states have call successors, (3993), 950 states have call predecessors, (3993), 1325 states have return successors, (6090), 4204 states have call predecessors, (6090), 3959 states have call successors, (6090) [2023-11-29 05:21:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26758 states to 26758 states and 44043 transitions. [2023-11-29 05:21:12,682 INFO L78 Accepts]: Start accepts. Automaton has 26758 states and 44043 transitions. Word has length 142 [2023-11-29 05:21:12,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:21:12,682 INFO L495 AbstractCegarLoop]: Abstraction has 26758 states and 44043 transitions. [2023-11-29 05:21:12,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:21:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 26758 states and 44043 transitions. [2023-11-29 05:21:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:21:12,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:21:12,685 INFO L195 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] [2023-11-29 05:21:12,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:21:12,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 05:21:12,886 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:21:12,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 243110833, now seen corresponding path program 1 times [2023-11-29 05:21:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:21:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636617592] [2023-11-29 05:21:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:12,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:21:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:21:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:21:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:21:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:21:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:21:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:21:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:21:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:21:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:21:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 05:21:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:21:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:21:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636617592] [2023-11-29 05:21:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636617592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:21:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771920736] [2023-11-29 05:21:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:13,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:21:13,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:21:13,119 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:21:13,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:21:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:13,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:21:13,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:21:13,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:21:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771920736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:21:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:21:13,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-29 05:21:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449353045] [2023-11-29 05:21:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:21:13,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:21:13,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:21:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:21:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:21:13,364 INFO L87 Difference]: Start difference. First operand 26758 states and 44043 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:21:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:21:18,663 INFO L93 Difference]: Finished difference Result 53627 states and 89171 transitions. [2023-11-29 05:21:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:21:18,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2023-11-29 05:21:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:21:18,751 INFO L225 Difference]: With dead ends: 53627 [2023-11-29 05:21:18,751 INFO L226 Difference]: Without dead ends: 26950 [2023-11-29 05:21:18,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:21:18,838 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 85 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:21:18,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2721 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:21:18,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26950 states. [2023-11-29 05:21:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26950 to 26950. [2023-11-29 05:21:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26950 states, 21599 states have (on average 1.5811843140886153) internal successors, (34152), 22227 states have internal predecessors, (34152), 3993 states have call successors, (3993), 982 states have call predecessors, (3993), 1357 states have return successors, (6090), 4204 states have call predecessors, (6090), 3959 states have call successors, (6090) [2023-11-29 05:21:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26950 states to 26950 states and 44235 transitions. [2023-11-29 05:21:24,417 INFO L78 Accepts]: Start accepts. Automaton has 26950 states and 44235 transitions. Word has length 142 [2023-11-29 05:21:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:21:24,418 INFO L495 AbstractCegarLoop]: Abstraction has 26950 states and 44235 transitions. [2023-11-29 05:21:24,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:21:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 26950 states and 44235 transitions. [2023-11-29 05:21:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 05:21:24,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:21:24,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:21:24,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:21:24,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:21:24,622 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:21:24,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash 654185896, now seen corresponding path program 1 times [2023-11-29 05:21:24,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:21:24,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907672824] [2023-11-29 05:21:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:24,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:21:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:21:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:21:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:21:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:21:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:21:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:21:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:21:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:21:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 05:21:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 05:21:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:21:24,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:21:24,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907672824] [2023-11-29 05:21:24,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907672824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:21:24,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382374725] [2023-11-29 05:21:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:24,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:21:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:21:24,901 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:21:24,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:21:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:25,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:21:25,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:21:25,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:21:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382374725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:21:25,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:21:25,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 05:21:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922933498] [2023-11-29 05:21:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:21:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:21:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:21:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:21:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:21:25,239 INFO L87 Difference]: Start difference. First operand 26950 states and 44235 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:21:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:21:40,206 INFO L93 Difference]: Finished difference Result 69482 states and 118066 transitions. [2023-11-29 05:21:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:21:40,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 144 [2023-11-29 05:21:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:21:40,365 INFO L225 Difference]: With dead ends: 69482 [2023-11-29 05:21:40,365 INFO L226 Difference]: Without dead ends: 47025 [2023-11-29 05:21:40,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:21:40,464 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 2982 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 6067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:21:40,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3097 Valid, 1658 Invalid, 6067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 5398 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 05:21:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47025 states. [2023-11-29 05:21:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47025 to 45721. [2023-11-29 05:21:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45721 states, 36351 states have (on average 1.5723914060135897) internal successors, (57158), 37455 states have internal predecessors, (57158), 6852 states have call successors, (6852), 1850 states have call predecessors, (6852), 2517 states have return successors, (11986), 7227 states have call predecessors, (11986), 6794 states have call successors, (11986) [2023-11-29 05:21:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45721 states to 45721 states and 75996 transitions. [2023-11-29 05:21:50,230 INFO L78 Accepts]: Start accepts. Automaton has 45721 states and 75996 transitions. Word has length 144 [2023-11-29 05:21:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:21:50,230 INFO L495 AbstractCegarLoop]: Abstraction has 45721 states and 75996 transitions. [2023-11-29 05:21:50,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:21:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 45721 states and 75996 transitions. [2023-11-29 05:21:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 05:21:50,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:21:50,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:21:50,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 05:21:50,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 05:21:50,434 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:21:50,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1009493851, now seen corresponding path program 1 times [2023-11-29 05:21:50,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:21:50,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902707619] [2023-11-29 05:21:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:21:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:21:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:21:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:21:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:21:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:21:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:21:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:21:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:21:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:21:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 05:21:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:21:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 05:21:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 05:21:50,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:21:50,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902707619] [2023-11-29 05:21:50,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902707619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:21:50,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098919127] [2023-11-29 05:21:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:21:50,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:21:50,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:21:50,861 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:21:50,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:21:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:51,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:21:51,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:21:51,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:21:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098919127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:21:51,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:21:51,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-11-29 05:21:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869803042] [2023-11-29 05:21:51,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:21:51,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:21:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:21:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:21:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:21:51,230 INFO L87 Difference]: Start difference. First operand 45721 states and 75996 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:22:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:22:02,935 INFO L93 Difference]: Finished difference Result 97551 states and 164006 transitions. [2023-11-29 05:22:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:22:02,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 145 [2023-11-29 05:22:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:22:03,116 INFO L225 Difference]: With dead ends: 97551 [2023-11-29 05:22:03,116 INFO L226 Difference]: Without dead ends: 51835 [2023-11-29 05:22:03,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:22:03,283 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1740 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 5543 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:22:03,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 5543 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:22:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51835 states. [2023-11-29 05:22:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51835 to 51730. [2023-11-29 05:22:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51730 states, 41361 states have (on average 1.5595125843185609) internal successors, (64503), 42537 states have internal predecessors, (64503), 7278 states have call successors, (7278), 2376 states have call predecessors, (7278), 3090 states have return successors, (15108), 7628 states have call predecessors, (15108), 7172 states have call successors, (15108) [2023-11-29 05:22:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51730 states to 51730 states and 86889 transitions. [2023-11-29 05:22:14,776 INFO L78 Accepts]: Start accepts. Automaton has 51730 states and 86889 transitions. Word has length 145 [2023-11-29 05:22:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:22:14,776 INFO L495 AbstractCegarLoop]: Abstraction has 51730 states and 86889 transitions. [2023-11-29 05:22:14,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 05:22:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 51730 states and 86889 transitions. [2023-11-29 05:22:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 05:22:14,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:22:14,780 INFO L195 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] [2023-11-29 05:22:14,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 05:22:14,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 05:22:14,981 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:22:14,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash -916796376, now seen corresponding path program 1 times [2023-11-29 05:22:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:14,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923422148] [2023-11-29 05:22:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:22:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:22:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:22:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:22:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:22:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:22:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:22:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:22:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:22:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:22:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:22:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:22:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:22:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:22:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:22:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:15,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:22:15,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:15,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923422148] [2023-11-29 05:22:15,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923422148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:15,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:15,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:22:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290411207] [2023-11-29 05:22:15,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:15,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:22:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:22:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:22:15,233 INFO L87 Difference]: Start difference. First operand 51730 states and 86889 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:22:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:22:36,385 INFO L93 Difference]: Finished difference Result 113745 states and 207790 transitions. [2023-11-29 05:22:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:22:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2023-11-29 05:22:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:22:36,795 INFO L225 Difference]: With dead ends: 113745 [2023-11-29 05:22:36,796 INFO L226 Difference]: Without dead ends: 61684 [2023-11-29 05:22:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:22:37,071 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1532 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:22:37,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 1422 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 05:22:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61684 states. [2023-11-29 05:22:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61684 to 51626. [2023-11-29 05:22:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51626 states, 41257 states have (on average 1.5533606418304773) internal successors, (64087), 42433 states have internal predecessors, (64087), 7278 states have call successors, (7278), 2376 states have call predecessors, (7278), 3090 states have return successors, (15108), 7628 states have call predecessors, (15108), 7172 states have call successors, (15108) [2023-11-29 05:22:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51626 states to 51626 states and 86473 transitions. [2023-11-29 05:22:47,648 INFO L78 Accepts]: Start accepts. Automaton has 51626 states and 86473 transitions. Word has length 149 [2023-11-29 05:22:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:22:47,648 INFO L495 AbstractCegarLoop]: Abstraction has 51626 states and 86473 transitions. [2023-11-29 05:22:47,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:22:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 51626 states and 86473 transitions. [2023-11-29 05:22:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 05:22:47,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:22:47,651 INFO L195 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] [2023-11-29 05:22:47,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 05:22:47,651 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:22:47,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:47,652 INFO L85 PathProgramCache]: Analyzing trace with hash -996958029, now seen corresponding path program 1 times [2023-11-29 05:22:47,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:22:47,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630935959] [2023-11-29 05:22:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:22:47,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:22:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:22:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:22:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:22:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:22:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:22:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:22:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:22:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:22:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:22:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:22:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:22:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:22:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 05:22:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 05:22:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:22:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:22:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 05:22:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:22:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630935959] [2023-11-29 05:22:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630935959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:22:48,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:22:48,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:22:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862874333] [2023-11-29 05:22:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:22:48,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:22:48,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:22:48,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:22:48,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:22:48,006 INFO L87 Difference]: Start difference. First operand 51626 states and 86473 transitions. Second operand has 11 states, 10 states have (on average 10.3) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 05:23:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:12,262 INFO L93 Difference]: Finished difference Result 122315 states and 216092 transitions. [2023-11-29 05:23:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:23:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 149 [2023-11-29 05:23:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:12,669 INFO L225 Difference]: With dead ends: 122315 [2023-11-29 05:23:12,670 INFO L226 Difference]: Without dead ends: 65636 [2023-11-29 05:23:12,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:23:12,947 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2038 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 6309 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 6738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 6309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:12,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 3110 Invalid, 6738 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [429 Valid, 6309 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 05:23:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65636 states. [2023-11-29 05:23:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65636 to 55146. [2023-11-29 05:23:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55146 states, 44529 states have (on average 1.5420737047766624) internal successors, (68667), 45689 states have internal predecessors, (68667), 7398 states have call successors, (7398), 2520 states have call predecessors, (7398), 3218 states have return successors, (14608), 7748 states have call predecessors, (14608), 7292 states have call successors, (14608) [2023-11-29 05:23:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55146 states to 55146 states and 90673 transitions. [2023-11-29 05:23:23,991 INFO L78 Accepts]: Start accepts. Automaton has 55146 states and 90673 transitions. Word has length 149 [2023-11-29 05:23:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:23,991 INFO L495 AbstractCegarLoop]: Abstraction has 55146 states and 90673 transitions. [2023-11-29 05:23:23,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 05:23:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 55146 states and 90673 transitions. [2023-11-29 05:23:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 05:23:23,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:23,996 INFO L195 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] [2023-11-29 05:23:23,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 05:23:23,997 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:23,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:23,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1967068738, now seen corresponding path program 1 times [2023-11-29 05:23:23,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:23,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204250739] [2023-11-29 05:23:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:23,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:23:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:23:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:23:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:23:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:23:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:23:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:23:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:23:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:23:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:23:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:23:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:23:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:23:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:23:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 05:23:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:23:24,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204250739] [2023-11-29 05:23:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204250739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547445043] [2023-11-29 05:23:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:24,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:24,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:24,437 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:24,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:23:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:23:24,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:23:24,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:23:24,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547445043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:24,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:23:24,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 19 [2023-11-29 05:23:24,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796568029] [2023-11-29 05:23:24,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:24,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:23:24,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:24,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:23:24,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:23:24,731 INFO L87 Difference]: Start difference. First operand 55146 states and 90673 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:23:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:52,838 INFO L93 Difference]: Finished difference Result 148427 states and 263211 transitions. [2023-11-29 05:23:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:23:52,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 150 [2023-11-29 05:23:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:53,191 INFO L225 Difference]: With dead ends: 148427 [2023-11-29 05:23:53,191 INFO L226 Difference]: Without dead ends: 93302 [2023-11-29 05:23:53,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:23:53,548 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 4156 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 3298 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4265 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 4256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 3298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:53,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4265 Valid, 984 Invalid, 4256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [958 Valid, 3298 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 05:23:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93302 states. [2023-11-29 05:24:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93302 to 86127. [2023-11-29 05:24:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86127 states, 68298 states have (on average 1.4838062607982665) internal successors, (101341), 70289 states have internal predecessors, (101341), 12507 states have call successors, (12507), 4347 states have call predecessors, (12507), 5321 states have return successors, (25262), 12998 states have call predecessors, (25262), 12387 states have call successors, (25262) [2023-11-29 05:24:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86127 states to 86127 states and 139110 transitions. [2023-11-29 05:24:13,080 INFO L78 Accepts]: Start accepts. Automaton has 86127 states and 139110 transitions. Word has length 150 [2023-11-29 05:24:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:13,081 INFO L495 AbstractCegarLoop]: Abstraction has 86127 states and 139110 transitions. [2023-11-29 05:24:13,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:24:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 86127 states and 139110 transitions. [2023-11-29 05:24:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:24:13,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:13,086 INFO L195 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] [2023-11-29 05:24:13,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 05:24:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:13,287 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:13,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1166301537, now seen corresponding path program 1 times [2023-11-29 05:24:13,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:13,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053989200] [2023-11-29 05:24:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:13,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:24:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:24:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:24:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:24:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:24:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:24:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:24:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:24:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:24:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:24:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:24:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:24:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:24:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:24:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 05:24:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:24:13,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:13,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053989200] [2023-11-29 05:24:13,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053989200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:13,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:24:13,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:24:13,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986224569] [2023-11-29 05:24:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:13,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:24:13,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:24:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:24:13,574 INFO L87 Difference]: Start difference. First operand 86127 states and 139110 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:24:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:52,227 INFO L93 Difference]: Finished difference Result 191535 states and 334190 transitions. [2023-11-29 05:24:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:24:52,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 153 [2023-11-29 05:24:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:52,945 INFO L225 Difference]: With dead ends: 191535 [2023-11-29 05:24:52,945 INFO L226 Difference]: Without dead ends: 105493 [2023-11-29 05:24:53,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:24:53,458 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1434 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:53,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1851 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 05:24:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105493 states. [2023-11-29 05:25:13,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105493 to 86839. [2023-11-29 05:25:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86839 states, 68906 states have (on average 1.4795373407250456) internal successors, (101949), 70749 states have internal predecessors, (101949), 12507 states have call successors, (12507), 4347 states have call predecessors, (12507), 5425 states have return successors, (25514), 13250 states have call predecessors, (25514), 12387 states have call successors, (25514) [2023-11-29 05:25:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86839 states to 86839 states and 139970 transitions. [2023-11-29 05:25:14,436 INFO L78 Accepts]: Start accepts. Automaton has 86839 states and 139970 transitions. Word has length 153 [2023-11-29 05:25:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:25:14,437 INFO L495 AbstractCegarLoop]: Abstraction has 86839 states and 139970 transitions. [2023-11-29 05:25:14,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:25:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 86839 states and 139970 transitions. [2023-11-29 05:25:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 05:25:14,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:25:14,442 INFO L195 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] [2023-11-29 05:25:14,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 05:25:14,442 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:25:14,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:25:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash 491083356, now seen corresponding path program 1 times [2023-11-29 05:25:14,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:25:14,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872390197] [2023-11-29 05:25:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:25:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:25:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:25:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:25:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:25:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:25:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:25:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:25:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:25:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:25:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:25:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:25:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:25:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:25:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:25:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:25:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-29 05:25:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:25:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:25:14,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:25:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872390197] [2023-11-29 05:25:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872390197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:25:14,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:25:14,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:25:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564420845] [2023-11-29 05:25:14,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:25:14,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:25:14,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:25:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:25:14,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:25:14,684 INFO L87 Difference]: Start difference. First operand 86839 states and 139970 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:25:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:25:52,385 INFO L93 Difference]: Finished difference Result 193443 states and 344104 transitions. [2023-11-29 05:25:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:25:52,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 158 [2023-11-29 05:25:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:25:53,117 INFO L225 Difference]: With dead ends: 193443 [2023-11-29 05:25:53,117 INFO L226 Difference]: Without dead ends: 106689 [2023-11-29 05:25:53,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:25:53,695 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1449 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:25:53,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1461 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 05:25:53,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106689 states. [2023-11-29 05:26:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106689 to 87985. [2023-11-29 05:26:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87985 states, 70052 states have (on average 1.478116256495175) internal successors, (103545), 71895 states have internal predecessors, (103545), 12507 states have call successors, (12507), 4347 states have call predecessors, (12507), 5425 states have return successors, (25514), 13250 states have call predecessors, (25514), 12387 states have call successors, (25514) [2023-11-29 05:26:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87985 states to 87985 states and 141566 transitions. [2023-11-29 05:26:14,467 INFO L78 Accepts]: Start accepts. Automaton has 87985 states and 141566 transitions. Word has length 158 [2023-11-29 05:26:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:26:14,467 INFO L495 AbstractCegarLoop]: Abstraction has 87985 states and 141566 transitions. [2023-11-29 05:26:14,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 05:26:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 87985 states and 141566 transitions. [2023-11-29 05:26:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-29 05:26:14,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:26:14,474 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:26:14,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 05:26:14,474 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:26:14,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:26:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash -704877761, now seen corresponding path program 1 times [2023-11-29 05:26:14,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:26:14,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816401300] [2023-11-29 05:26:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:26:14,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:26:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:26:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:26:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:26:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:26:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:26:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:26:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:26:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:26:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:26:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:26:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 05:26:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:26:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:26:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:26:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:26:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 05:26:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-29 05:26:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 05:26:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:26:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:26:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-11-29 05:26:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:26:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-29 05:26:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-29 05:26:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-29 05:26:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 05:26:15,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:26:15,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816401300] [2023-11-29 05:26:15,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816401300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:26:15,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993224660] [2023-11-29 05:26:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:26:15,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:26:15,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:26:15,054 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:26:15,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:26:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:15,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:26:15,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:26:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-29 05:26:15,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:26:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993224660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:26:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:26:15,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-29 05:26:15,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159106341] [2023-11-29 05:26:15,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:26:15,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:26:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:26:15,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:26:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:26:15,394 INFO L87 Difference]: Start difference. First operand 87985 states and 141566 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-29 05:26:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:26:36,720 INFO L93 Difference]: Finished difference Result 179697 states and 293991 transitions. [2023-11-29 05:26:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:26:36,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 249 [2023-11-29 05:26:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:26:37,073 INFO L225 Difference]: With dead ends: 179697 [2023-11-29 05:26:37,073 INFO L226 Difference]: Without dead ends: 92041 [2023-11-29 05:26:37,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:26:37,994 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 213 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:26:37,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2604 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:26:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92041 states. [2023-11-29 05:26:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92041 to 92041. [2023-11-29 05:26:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92041 states, 74004 states have (on average 1.5017701745851575) internal successors, (111137), 75847 states have internal predecessors, (111137), 12507 states have call successors, (12507), 4451 states have call predecessors, (12507), 5529 states have return successors, (25514), 13250 states have call predecessors, (25514), 12387 states have call successors, (25514) [2023-11-29 05:26:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92041 states to 92041 states and 149158 transitions. [2023-11-29 05:26:58,396 INFO L78 Accepts]: Start accepts. Automaton has 92041 states and 149158 transitions. Word has length 249 [2023-11-29 05:26:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:26:58,396 INFO L495 AbstractCegarLoop]: Abstraction has 92041 states and 149158 transitions. [2023-11-29 05:26:58,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-29 05:26:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 92041 states and 149158 transitions. [2023-11-29 05:26:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-29 05:26:58,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:26:58,400 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:26:58,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 05:26:58,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 05:26:58,601 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:26:58,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:26:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash -36447941, now seen corresponding path program 1 times [2023-11-29 05:26:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:26:58,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009833025] [2023-11-29 05:26:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:26:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:26:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:26:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:26:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:26:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:26:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:26:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:26:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:26:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:26:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:26:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:26:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:26:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:26:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:26:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:26:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-29 05:26:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:26:58,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:26:58,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009833025] [2023-11-29 05:26:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009833025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:26:58,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568997878] [2023-11-29 05:26:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:26:58,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:26:58,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:26:58,870 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:26:58,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:26:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:26:59,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:26:59,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:26:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:26:59,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:26:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:26:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568997878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:26:59,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:26:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 19 [2023-11-29 05:26:59,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848815318] [2023-11-29 05:26:59,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:26:59,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:26:59,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:26:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:26:59,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:26:59,475 INFO L87 Difference]: Start difference. First operand 92041 states and 149158 transitions. Second operand has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 17 states have internal predecessors, (207), 6 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-29 05:28:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:40,733 INFO L93 Difference]: Finished difference Result 277275 states and 617005 transitions. [2023-11-29 05:28:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-29 05:28:40,734 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 17 states have internal predecessors, (207), 6 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 167 [2023-11-29 05:28:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:42,498 INFO L225 Difference]: With dead ends: 277275 [2023-11-29 05:28:42,498 INFO L226 Difference]: Without dead ends: 185319 [2023-11-29 05:28:43,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1224, Invalid=3888, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 05:28:43,688 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 12563 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 11101 mSolverCounterSat, 3523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12667 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 14624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3523 IncrementalHoareTripleChecker+Valid, 11101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:43,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12667 Valid, 5065 Invalid, 14624 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3523 Valid, 11101 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-11-29 05:28:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185319 states. [2023-11-29 05:29:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185319 to 126845. [2023-11-29 05:29:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126845 states, 101959 states have (on average 1.5088319814827529) internal successors, (153839), 104529 states have internal predecessors, (153839), 17405 states have call successors, (17405), 6190 states have call predecessors, (17405), 7480 states have return successors, (37449), 18329 states have call predecessors, (37449), 17271 states have call successors, (37449) [2023-11-29 05:29:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126845 states to 126845 states and 208693 transitions. [2023-11-29 05:29:19,434 INFO L78 Accepts]: Start accepts. Automaton has 126845 states and 208693 transitions. Word has length 167 [2023-11-29 05:29:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:19,434 INFO L495 AbstractCegarLoop]: Abstraction has 126845 states and 208693 transitions. [2023-11-29 05:29:19,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 17 states have internal predecessors, (207), 6 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-29 05:29:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 126845 states and 208693 transitions. [2023-11-29 05:29:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 05:29:19,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:19,440 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:19,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 05:29:19,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 05:29:19,641 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:19,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1714199554, now seen corresponding path program 1 times [2023-11-29 05:29:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267189295] [2023-11-29 05:29:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:29:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:29:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:29:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:29:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:29:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:29:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:29:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:29:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:29:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:29:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:29:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:29:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 05:29:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:29:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-29 05:29:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 05:29:20,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267189295] [2023-11-29 05:29:20,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267189295] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515016646] [2023-11-29 05:29:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:20,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:20,216 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:20,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd64e8ab-831e-4b89-b64f-0a2330cba5e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 05:29:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:20,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:29:20,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 05:29:20,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:29:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515016646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:20,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:29:20,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-29 05:29:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642492148] [2023-11-29 05:29:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:29:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:29:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:29:20,547 INFO L87 Difference]: Start difference. First operand 126845 states and 208693 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:30:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:30:09,560 INFO L93 Difference]: Finished difference Result 281060 states and 468126 transitions. [2023-11-29 05:30:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:30:09,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 176 [2023-11-29 05:30:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:30:10,455 INFO L225 Difference]: With dead ends: 281060 [2023-11-29 05:30:10,455 INFO L226 Difference]: Without dead ends: 161129 [2023-11-29 05:30:11,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:30:11,320 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 4130 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 7486 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4250 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 8409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 7486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:30:11,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4250 Valid, 2502 Invalid, 8409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 7486 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 05:30:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161129 states.