./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.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_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/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_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/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_dd37621f-c2b0-4918-80f6-4e1661468dc1/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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:43:11,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:43:11,462 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:43:11,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:43:11,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:43:11,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:43:11,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:43:11,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:43:11,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:43:11,501 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:43:11,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:43:11,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:43:11,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:43:11,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:43:11,504 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:43:11,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:43:11,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:43:11,505 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:43:11,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:43:11,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:43:11,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:43:11,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:43:11,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:43:11,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:43:11,509 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:43:11,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:43:11,510 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:43:11,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:43:11,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:43:11,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:43:11,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:43:11,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:43:11,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:43:11,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:43:11,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:43:11,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:43:11,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:43:11,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:43:11,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:43:11,514 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:43:11,514 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:43:11,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:43:11,514 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_dd37621f-c2b0-4918-80f6-4e1661468dc1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2023-11-28 23:43:11,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:43:11,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:43:11,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:43:11,776 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:43:11,776 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:43:11,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2023-11-28 23:43:14,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:43:14,865 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:43:14,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2023-11-28 23:43:14,888 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/data/6ce00eb9e/bb052f40871c466cb4dedf5dc5ddbaf1/FLAG8a23e282a [2023-11-28 23:43:14,903 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/data/6ce00eb9e/bb052f40871c466cb4dedf5dc5ddbaf1 [2023-11-28 23:43:14,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:43:14,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:43:14,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:43:14,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:43:14,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:43:14,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:14" (1/1) ... [2023-11-28 23:43:14,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31660c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:14, skipping insertion in model container [2023-11-28 23:43:14,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:14" (1/1) ... [2023-11-28 23:43:15,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:43:15,432 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_dd37621f-c2b0-4918-80f6-4e1661468dc1/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2023-11-28 23:43:15,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:43:15,456 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:43:15,467 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2023-11-28 23:43:15,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1575] [2023-11-28 23:43:15,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1934] [2023-11-28 23:43:15,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2300] [2023-11-28 23:43:15,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2391] [2023-11-28 23:43:15,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2023-11-28 23:43:15,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2439] [2023-11-28 23:43:15,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2023-11-28 23:43:15,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3114] [2023-11-28 23:43:15,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3232] [2023-11-28 23:43:15,554 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_dd37621f-c2b0-4918-80f6-4e1661468dc1/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2023-11-28 23:43:15,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:43:15,588 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:43:15,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15 WrapperNode [2023-11-28 23:43:15,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:43:15,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:43:15,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:43:15,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:43:15,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,667 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 849 [2023-11-28 23:43:15,667 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:43:15,668 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:43:15,668 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:43:15,668 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:43:15,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,716 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]. [2023-11-28 23:43:15,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:43:15,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:43:15,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:43:15,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:43:15,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (1/1) ... [2023-11-28 23:43:15,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:43:15,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:15,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:43:15,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:43:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-28 23:43:15,872 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-28 23:43:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:43:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-28 23:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-28 23:43:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-28 23:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-28 23:43:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-28 23:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-28 23:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-28 23:43:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-28 23:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-28 23:43:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-28 23:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-28 23:43:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-28 23:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-28 23:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-28 23:43:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-28 23:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-28 23:43:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-28 23:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-28 23:43:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-28 23:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-28 23:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-28 23:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-28 23:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-28 23:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-28 23:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-28 23:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-28 23:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-28 23:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-28 23:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-28 23:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-28 23:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-28 23:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-28 23:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-28 23:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-28 23:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-28 23:43:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-28 23:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-28 23:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-28 23:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-28 23:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-28 23:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-28 23:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-28 23:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-28 23:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-28 23:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-28 23:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-28 23:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-28 23:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-28 23:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-28 23:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-28 23:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-28 23:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-28 23:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-28 23:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-28 23:43:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-28 23:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:43:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-28 23:43:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-28 23:43:16,098 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:43:16,101 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:43:17,026 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:43:17,148 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:43:17,149 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:43:17,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:43:17 BoogieIcfgContainer [2023-11-28 23:43:17,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:43:17,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:43:17,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:43:17,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:43:17,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:43:14" (1/3) ... [2023-11-28 23:43:17,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d21e017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:43:17, skipping insertion in model container [2023-11-28 23:43:17,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:15" (2/3) ... [2023-11-28 23:43:17,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d21e017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:43:17, skipping insertion in model container [2023-11-28 23:43:17,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:43:17" (3/3) ... [2023-11-28 23:43:17,159 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2023-11-28 23:43:17,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:43:17,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:43:17,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:43:17,250 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;@5e6d16ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:43:17,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:43:17,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 549 states, 424 states have (on average 1.724056603773585) internal successors, (731), 445 states have internal predecessors, (731), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-28 23:43:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-28 23:43:17,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:17,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:17,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:17,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2117064069, now seen corresponding path program 1 times [2023-11-28 23:43:17,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:17,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233409355] [2023-11-28 23:43:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:17,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-28 23:43:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:43:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 23:43:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-28 23:43:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:43:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-28 23:43:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:19,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233409355] [2023-11-28 23:43:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233409355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:19,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:19,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-28 23:43:19,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922263527] [2023-11-28 23:43:19,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:19,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:43:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:19,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:43:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:43:19,054 INFO L87 Difference]: Start difference. First operand has 549 states, 424 states have (on average 1.724056603773585) internal successors, (731), 445 states have internal predecessors, (731), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:30,788 INFO L93 Difference]: Finished difference Result 1389 states and 2394 transitions. [2023-11-28 23:43:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:43:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-11-28 23:43:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:30,816 INFO L225 Difference]: With dead ends: 1389 [2023-11-28 23:43:30,816 INFO L226 Difference]: Without dead ends: 840 [2023-11-28 23:43:30,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-11-28 23:43:30,831 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1029 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 8453 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 8704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 8453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:30,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 4539 Invalid, 8704 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [251 Valid, 8453 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-28 23:43:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-11-28 23:43:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 552. [2023-11-28 23:43:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 427 states have (on average 1.7049180327868851) internal successors, (728), 446 states have internal predecessors, (728), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-28 23:43:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 924 transitions. [2023-11-28 23:43:31,101 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 924 transitions. Word has length 101 [2023-11-28 23:43:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:31,102 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 924 transitions. [2023-11-28 23:43:31,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 924 transitions. [2023-11-28 23:43:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-28 23:43:31,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:31,112 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] [2023-11-28 23:43:31,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:43:31,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:31,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1908518355, now seen corresponding path program 1 times [2023-11-28 23:43:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806823804] [2023-11-28 23:43:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-28 23:43:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-28 23:43:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-28 23:43:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:43:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-28 23:43:32,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806823804] [2023-11-28 23:43:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806823804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:32,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:32,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-28 23:43:32,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25925238] [2023-11-28 23:43:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:32,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:43:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:43:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:43:32,184 INFO L87 Difference]: Start difference. First operand 552 states and 924 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:42,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:42,046 INFO L93 Difference]: Finished difference Result 1396 states and 2383 transitions. [2023-11-28 23:43:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:43:42,047 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-11-28 23:43:42,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:42,055 INFO L225 Difference]: With dead ends: 1396 [2023-11-28 23:43:42,055 INFO L226 Difference]: Without dead ends: 847 [2023-11-28 23:43:42,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:43:42,061 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1441 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 7503 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 7882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 7503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:42,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 4006 Invalid, 7882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 7503 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-28 23:43:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-28 23:43:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 553. [2023-11-28 23:43:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 428 states have (on average 1.7009345794392523) internal successors, (728), 446 states have internal predecessors, (728), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-28 23:43:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 924 transitions. [2023-11-28 23:43:42,204 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 924 transitions. Word has length 105 [2023-11-28 23:43:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:42,204 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 924 transitions. [2023-11-28 23:43:42,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 924 transitions. [2023-11-28 23:43:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-28 23:43:42,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:42,210 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] [2023-11-28 23:43:42,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:43:42,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1091757423, now seen corresponding path program 1 times [2023-11-28 23:43:42,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:42,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425037432] [2023-11-28 23:43:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:42,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-28 23:43:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-28 23:43:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:43:43,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425037432] [2023-11-28 23:43:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425037432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:43,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557535871] [2023-11-28 23:43:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:43,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:43,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:43,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:43,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:43:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:43,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:43,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 23:43:43,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:43,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557535871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:43,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:43,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-28 23:43:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975911728] [2023-11-28 23:43:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:43,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:43:43,626 INFO L87 Difference]: Start difference. First operand 553 states and 924 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:43,844 INFO L93 Difference]: Finished difference Result 1110 states and 1855 transitions. [2023-11-28 23:43:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:43:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2023-11-28 23:43:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:43,850 INFO L225 Difference]: With dead ends: 1110 [2023-11-28 23:43:43,850 INFO L226 Difference]: Without dead ends: 562 [2023-11-28 23:43:43,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:43:43,854 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 20 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:43,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2657 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-28 23:43:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-28 23:43:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.6972477064220184) internal successors, (740), 454 states have internal predecessors, (740), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-28 23:43:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 936 transitions. [2023-11-28 23:43:43,959 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 936 transitions. Word has length 107 [2023-11-28 23:43:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:43,959 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 936 transitions. [2023-11-28 23:43:43,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 936 transitions. [2023-11-28 23:43:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-28 23:43:43,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:43,965 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] [2023-11-28 23:43:43,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:43:44,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:44,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:44,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1861460595, now seen corresponding path program 1 times [2023-11-28 23:43:44,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:44,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142217150] [2023-11-28 23:43:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:44,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:43:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 23:43:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-28 23:43:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:43:45,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:45,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142217150] [2023-11-28 23:43:45,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142217150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:45,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000588195] [2023-11-28 23:43:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:45,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:45,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:45,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:45,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:43:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:45,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 23:43:45,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:45,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000588195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:45,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:45,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-28 23:43:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821931652] [2023-11-28 23:43:45,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:45,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:45,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:45,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:43:45,503 INFO L87 Difference]: Start difference. First operand 562 states and 936 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:45,698 INFO L93 Difference]: Finished difference Result 1112 states and 1856 transitions. [2023-11-28 23:43:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:43:45,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2023-11-28 23:43:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:45,703 INFO L225 Difference]: With dead ends: 1112 [2023-11-28 23:43:45,703 INFO L226 Difference]: Without dead ends: 562 [2023-11-28 23:43:45,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:43:45,707 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 18 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:45,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2657 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:45,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-28 23:43:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-28 23:43:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.694954128440367) internal successors, (739), 454 states have internal predecessors, (739), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-28 23:43:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 935 transitions. [2023-11-28 23:43:45,862 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 935 transitions. Word has length 108 [2023-11-28 23:43:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:45,863 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 935 transitions. [2023-11-28 23:43:45,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 935 transitions. [2023-11-28 23:43:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-28 23:43:45,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:45,868 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] [2023-11-28 23:43:45,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:43:46,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:46,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:46,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2109626645, now seen corresponding path program 1 times [2023-11-28 23:43:46,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:46,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380449789] [2023-11-28 23:43:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:46,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:43:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-28 23:43:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:43:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:43:46,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380449789] [2023-11-28 23:43:46,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380449789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503567896] [2023-11-28 23:43:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:46,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:46,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:46,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:46,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:43:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:47,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:47,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 23:43:47,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:47,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503567896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:47,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2023-11-28 23:43:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197526192] [2023-11-28 23:43:47,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:47,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:47,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:47,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:43:47,321 INFO L87 Difference]: Start difference. First operand 562 states and 935 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:47,559 INFO L93 Difference]: Finished difference Result 1112 states and 1855 transitions. [2023-11-28 23:43:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:43:47,560 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2023-11-28 23:43:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:47,565 INFO L225 Difference]: With dead ends: 1112 [2023-11-28 23:43:47,565 INFO L226 Difference]: Without dead ends: 562 [2023-11-28 23:43:47,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:43:47,569 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 17 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:47,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2657 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-28 23:43:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-28 23:43:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.6926605504587156) internal successors, (738), 454 states have internal predecessors, (738), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-28 23:43:47,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 934 transitions. [2023-11-28 23:43:47,688 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 934 transitions. Word has length 109 [2023-11-28 23:43:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:47,688 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 934 transitions. [2023-11-28 23:43:47,688 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 934 transitions. [2023-11-28 23:43:47,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-28 23:43:47,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:47,693 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] [2023-11-28 23:43:47,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:43:47,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:47,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:47,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:47,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1573605999, now seen corresponding path program 1 times [2023-11-28 23:43:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359373471] [2023-11-28 23:43:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:43:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-28 23:43:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-28 23:43:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:43:48,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359373471] [2023-11-28 23:43:48,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359373471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586658168] [2023-11-28 23:43:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:48,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:48,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:48,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:43:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:49,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:43:49,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:49,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:49,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:49,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586658168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:49,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:49,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-28 23:43:49,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053840046] [2023-11-28 23:43:49,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:49,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:43:49,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:49,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:43:49,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:43:49,183 INFO L87 Difference]: Start difference. First operand 562 states and 934 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:43:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:49,474 INFO L93 Difference]: Finished difference Result 1130 states and 1884 transitions. [2023-11-28 23:43:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:43:49,475 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-11-28 23:43:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:49,480 INFO L225 Difference]: With dead ends: 1130 [2023-11-28 23:43:49,481 INFO L226 Difference]: Without dead ends: 584 [2023-11-28 23:43:49,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:43:49,485 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 146 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:49,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 5228 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-28 23:43:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 580. [2023-11-28 23:43:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.6917960088691797) internal successors, (763), 471 states have internal predecessors, (763), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (102), 95 states have call predecessors, (102), 94 states have call successors, (102) [2023-11-28 23:43:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 964 transitions. [2023-11-28 23:43:49,649 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 964 transitions. Word has length 110 [2023-11-28 23:43:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:49,649 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 964 transitions. [2023-11-28 23:43:49,650 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:43:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 964 transitions. [2023-11-28 23:43:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-28 23:43:49,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:49,655 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] [2023-11-28 23:43:49,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:43:49,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 23:43:49,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:49,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:49,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1058085550, now seen corresponding path program 1 times [2023-11-28 23:43:49,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:49,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104727375] [2023-11-28 23:43:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:43:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-28 23:43:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-28 23:43:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:43:50,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:50,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104727375] [2023-11-28 23:43:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104727375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:50,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076624189] [2023-11-28 23:43:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:50,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:50,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:50,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:50,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:43:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:50,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:50,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:50,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076624189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:50,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-28 23:43:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096335730] [2023-11-28 23:43:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:50,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:50,998 INFO L87 Difference]: Start difference. First operand 580 states and 964 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:51,250 INFO L93 Difference]: Finished difference Result 1168 states and 1955 transitions. [2023-11-28 23:43:51,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:43:51,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2023-11-28 23:43:51,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:51,256 INFO L225 Difference]: With dead ends: 1168 [2023-11-28 23:43:51,257 INFO L226 Difference]: Without dead ends: 580 [2023-11-28 23:43:51,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:43:51,261 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 133 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:51,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2476 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:51,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-11-28 23:43:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2023-11-28 23:43:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.680709534368071) internal successors, (758), 471 states have internal predecessors, (758), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (102), 95 states have call predecessors, (102), 94 states have call successors, (102) [2023-11-28 23:43:51,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 959 transitions. [2023-11-28 23:43:51,444 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 959 transitions. Word has length 110 [2023-11-28 23:43:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:51,444 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 959 transitions. [2023-11-28 23:43:51,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 959 transitions. [2023-11-28 23:43:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-28 23:43:51,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:51,450 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] [2023-11-28 23:43:51,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:43:51,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:51,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:51,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1414335570, now seen corresponding path program 1 times [2023-11-28 23:43:51,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:51,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667910036] [2023-11-28 23:43:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:43:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-28 23:43:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-28 23:43:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:43:52,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:52,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667910036] [2023-11-28 23:43:52,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667910036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:52,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378769514] [2023-11-28 23:43:52,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:52,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:52,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:52,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:52,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:43:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:52,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:52,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378769514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:52,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:52,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-28 23:43:52,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650292426] [2023-11-28 23:43:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:52,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:52,625 INFO L87 Difference]: Start difference. First operand 580 states and 959 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:52,837 INFO L93 Difference]: Finished difference Result 1168 states and 1945 transitions. [2023-11-28 23:43:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:43:52,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2023-11-28 23:43:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:52,842 INFO L225 Difference]: With dead ends: 1168 [2023-11-28 23:43:52,842 INFO L226 Difference]: Without dead ends: 580 [2023-11-28 23:43:52,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:43:52,846 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 127 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:52,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2476 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-11-28 23:43:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2023-11-28 23:43:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.6696230598669624) internal successors, (753), 471 states have internal predecessors, (753), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (102), 95 states have call predecessors, (102), 94 states have call successors, (102) [2023-11-28 23:43:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 954 transitions. [2023-11-28 23:43:52,991 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 954 transitions. Word has length 112 [2023-11-28 23:43:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:52,992 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 954 transitions. [2023-11-28 23:43:52,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 954 transitions. [2023-11-28 23:43:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 23:43:52,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:52,997 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] [2023-11-28 23:43:53,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:43:53,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:53,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:53,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2112818040, now seen corresponding path program 1 times [2023-11-28 23:43:53,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:53,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527240994] [2023-11-28 23:43:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:53,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:43:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-28 23:43:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-28 23:43:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:43:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527240994] [2023-11-28 23:43:53,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527240994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44331688] [2023-11-28 23:43:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:53,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:53,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:53,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:43:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:54,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:54,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:54,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44331688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:54,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-28 23:43:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923510073] [2023-11-28 23:43:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:54,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:54,184 INFO L87 Difference]: Start difference. First operand 580 states and 954 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:54,498 INFO L93 Difference]: Finished difference Result 1204 states and 1993 transitions. [2023-11-28 23:43:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:43:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-11-28 23:43:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:54,503 INFO L225 Difference]: With dead ends: 1204 [2023-11-28 23:43:54,503 INFO L226 Difference]: Without dead ends: 644 [2023-11-28 23:43:54,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:43:54,507 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 177 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:54,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2486 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-11-28 23:43:54,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 630. [2023-11-28 23:43:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 500 states have (on average 1.674) internal successors, (837), 520 states have internal predecessors, (837), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (101), 95 states have call predecessors, (101), 94 states have call successors, (101) [2023-11-28 23:43:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1037 transitions. [2023-11-28 23:43:54,652 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1037 transitions. Word has length 114 [2023-11-28 23:43:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:54,653 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1037 transitions. [2023-11-28 23:43:54,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1037 transitions. [2023-11-28 23:43:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-28 23:43:54,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:54,658 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-28 23:43:54,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:43:54,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:54,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:54,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1982488610, now seen corresponding path program 1 times [2023-11-28 23:43:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300164495] [2023-11-28 23:43:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:43:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-28 23:43:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:43:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300164495] [2023-11-28 23:43:55,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300164495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025799972] [2023-11-28 23:43:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:55,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:55,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:55,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:55,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:43:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:43:55,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:55,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:55,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025799972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:55,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:55,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-28 23:43:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452859018] [2023-11-28 23:43:55,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:55,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:43:55,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:43:55,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:43:55,996 INFO L87 Difference]: Start difference. First operand 630 states and 1037 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:43:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:56,304 INFO L93 Difference]: Finished difference Result 1196 states and 1973 transitions. [2023-11-28 23:43:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:43:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-28 23:43:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:56,308 INFO L225 Difference]: With dead ends: 1196 [2023-11-28 23:43:56,308 INFO L226 Difference]: Without dead ends: 650 [2023-11-28 23:43:56,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:43:56,311 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 171 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5985 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:56,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5985 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-28 23:43:56,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 630. [2023-11-28 23:43:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 500 states have (on average 1.674) internal successors, (837), 520 states have internal predecessors, (837), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (101), 95 states have call predecessors, (101), 94 states have call successors, (101) [2023-11-28 23:43:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1037 transitions. [2023-11-28 23:43:56,474 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1037 transitions. Word has length 115 [2023-11-28 23:43:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:56,474 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1037 transitions. [2023-11-28 23:43:56,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:43:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1037 transitions. [2023-11-28 23:43:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-28 23:43:56,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:56,478 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] [2023-11-28 23:43:56,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:43:56,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:56,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:56,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash -644928190, now seen corresponding path program 1 times [2023-11-28 23:43:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:56,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118949021] [2023-11-28 23:43:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:56,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:56,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:43:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-28 23:43:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:43:57,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:57,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118949021] [2023-11-28 23:43:57,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118949021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100542080] [2023-11-28 23:43:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:57,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:57,291 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:57,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:43:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:57,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:57,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:57,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100542080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-28 23:43:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007446673] [2023-11-28 23:43:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:57,623 INFO L87 Difference]: Start difference. First operand 630 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:57,940 INFO L93 Difference]: Finished difference Result 1204 states and 1991 transitions. [2023-11-28 23:43:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:43:57,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2023-11-28 23:43:57,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:57,945 INFO L225 Difference]: With dead ends: 1204 [2023-11-28 23:43:57,945 INFO L226 Difference]: Without dead ends: 630 [2023-11-28 23:43:57,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:43:57,948 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 171 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:57,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2486 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-28 23:43:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2023-11-28 23:43:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 500 states have (on average 1.664) internal successors, (832), 520 states have internal predecessors, (832), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (101), 95 states have call predecessors, (101), 94 states have call successors, (101) [2023-11-28 23:43:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1032 transitions. [2023-11-28 23:43:58,091 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1032 transitions. Word has length 115 [2023-11-28 23:43:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:58,092 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 1032 transitions. [2023-11-28 23:43:58,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:43:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1032 transitions. [2023-11-28 23:43:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-28 23:43:58,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:58,096 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-28 23:43:58,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-28 23:43:58,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 23:43:58,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:58,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:58,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1617831679, now seen corresponding path program 1 times [2023-11-28 23:43:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:58,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307627434] [2023-11-28 23:43:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:58,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:43:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-28 23:43:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:43:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:43:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:43:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:43:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:58,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307627434] [2023-11-28 23:43:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307627434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416044911] [2023-11-28 23:43:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:58,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:58,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:58,964 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:58,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:43:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:59,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:43:59,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:43:59,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416044911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:59,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:43:59,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-28 23:43:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225634047] [2023-11-28 23:43:59,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:59,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:43:59,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:43:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:43:59,339 INFO L87 Difference]: Start difference. First operand 630 states and 1032 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:43:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:59,567 INFO L93 Difference]: Finished difference Result 1132 states and 1866 transitions. [2023-11-28 23:43:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:43:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2023-11-28 23:43:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:59,573 INFO L225 Difference]: With dead ends: 1132 [2023-11-28 23:43:59,573 INFO L226 Difference]: Without dead ends: 652 [2023-11-28 23:43:59,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:43:59,577 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 132 mSDsluCounter, 4306 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:59,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 5187 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:43:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-28 23:43:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 648. [2023-11-28 23:43:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 515 states have (on average 1.6640776699029127) internal successors, (857), 537 states have internal predecessors, (857), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:43:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1061 transitions. [2023-11-28 23:43:59,743 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1061 transitions. Word has length 115 [2023-11-28 23:43:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:59,743 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1061 transitions. [2023-11-28 23:43:59,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:43:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1061 transitions. [2023-11-28 23:43:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-28 23:43:59,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:59,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:59,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:43:59,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 23:43:59,956 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:59,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:59,957 INFO L85 PathProgramCache]: Analyzing trace with hash 779225198, now seen corresponding path program 1 times [2023-11-28 23:43:59,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:59,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947097590] [2023-11-28 23:43:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:59,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-28 23:44:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:44:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:44:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:44:00,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:00,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947097590] [2023-11-28 23:44:00,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947097590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:00,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718730755] [2023-11-28 23:44:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:00,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:00,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:00,663 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:00,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:44:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:00,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:44:00,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:44:01,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:01,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718730755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:01,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:01,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-28 23:44:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800420057] [2023-11-28 23:44:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:01,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:01,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:44:01,060 INFO L87 Difference]: Start difference. First operand 648 states and 1061 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:44:01,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:01,305 INFO L93 Difference]: Finished difference Result 1160 states and 1915 transitions. [2023-11-28 23:44:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:44:01,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2023-11-28 23:44:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:01,309 INFO L225 Difference]: With dead ends: 1160 [2023-11-28 23:44:01,309 INFO L226 Difference]: Without dead ends: 680 [2023-11-28 23:44:01,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:44:01,312 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 141 mSDsluCounter, 4296 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:01,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 5177 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:01,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-11-28 23:44:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 648. [2023-11-28 23:44:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 515 states have (on average 1.6640776699029127) internal successors, (857), 537 states have internal predecessors, (857), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:44:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1061 transitions. [2023-11-28 23:44:01,408 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1061 transitions. Word has length 116 [2023-11-28 23:44:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:01,408 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1061 transitions. [2023-11-28 23:44:01,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:44:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1061 transitions. [2023-11-28 23:44:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-28 23:44:01,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:01,411 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] [2023-11-28 23:44:01,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:01,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:44:01,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:01,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash 655350766, now seen corresponding path program 1 times [2023-11-28 23:44:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:01,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704705713] [2023-11-28 23:44:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:01,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:01,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-28 23:44:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:44:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:44:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:44:02,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:02,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704705713] [2023-11-28 23:44:02,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704705713] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:02,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601497306] [2023-11-28 23:44:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:02,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:02,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:02,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:44:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:02,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:44:02,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:44:02,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601497306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:02,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-28 23:44:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368274742] [2023-11-28 23:44:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:02,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:44:02,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:44:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:44:02,701 INFO L87 Difference]: Start difference. First operand 648 states and 1061 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:44:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:02,990 INFO L93 Difference]: Finished difference Result 1146 states and 1890 transitions. [2023-11-28 23:44:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:44:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2023-11-28 23:44:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:02,994 INFO L225 Difference]: With dead ends: 1146 [2023-11-28 23:44:02,994 INFO L226 Difference]: Without dead ends: 666 [2023-11-28 23:44:02,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:44:02,997 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 171 mSDsluCounter, 5122 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5993 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:02,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5993 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-28 23:44:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 648. [2023-11-28 23:44:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 515 states have (on average 1.6640776699029127) internal successors, (857), 537 states have internal predecessors, (857), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:44:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1061 transitions. [2023-11-28 23:44:03,096 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1061 transitions. Word has length 116 [2023-11-28 23:44:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:03,097 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1061 transitions. [2023-11-28 23:44:03,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:44:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1061 transitions. [2023-11-28 23:44:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-28 23:44:03,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:03,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:03,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:03,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:44:03,301 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:03,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash -501367595, now seen corresponding path program 1 times [2023-11-28 23:44:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:03,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548587337] [2023-11-28 23:44:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-28 23:44:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-28 23:44:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:44:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:44:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:44:04,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:04,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548587337] [2023-11-28 23:44:04,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548587337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:04,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277674632] [2023-11-28 23:44:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:04,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:04,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:04,045 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:04,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:44:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:04,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:44:04,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:44:04,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277674632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:04,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:04,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-28 23:44:04,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263009122] [2023-11-28 23:44:04,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:44:04,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:44:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:04,367 INFO L87 Difference]: Start difference. First operand 648 states and 1061 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:44:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:04,549 INFO L93 Difference]: Finished difference Result 1198 states and 1975 transitions. [2023-11-28 23:44:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:44:04,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-11-28 23:44:04,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:04,554 INFO L225 Difference]: With dead ends: 1198 [2023-11-28 23:44:04,554 INFO L226 Difference]: Without dead ends: 648 [2023-11-28 23:44:04,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:04,557 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 23 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:04,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2626 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:44:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-11-28 23:44:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2023-11-28 23:44:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 515 states have (on average 1.6563106796116505) internal successors, (853), 537 states have internal predecessors, (853), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:44:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1057 transitions. [2023-11-28 23:44:04,702 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1057 transitions. Word has length 116 [2023-11-28 23:44:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:04,702 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1057 transitions. [2023-11-28 23:44:04,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:44:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1057 transitions. [2023-11-28 23:44:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-28 23:44:04,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:04,706 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] [2023-11-28 23:44:04,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:44:04,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:44:04,906 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:04,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1583202953, now seen corresponding path program 1 times [2023-11-28 23:44:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:04,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608548547] [2023-11-28 23:44:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:44:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:44:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:44:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:44:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608548547] [2023-11-28 23:44:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608548547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924262524] [2023-11-28 23:44:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:05,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:05,497 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:05,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:44:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:44:05,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:44:05,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924262524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:05,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-28 23:44:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363942465] [2023-11-28 23:44:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:05,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:44:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:44:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:44:05,872 INFO L87 Difference]: Start difference. First operand 648 states and 1057 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:44:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:06,161 INFO L93 Difference]: Finished difference Result 1146 states and 1887 transitions. [2023-11-28 23:44:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:44:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2023-11-28 23:44:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:06,165 INFO L225 Difference]: With dead ends: 1146 [2023-11-28 23:44:06,165 INFO L226 Difference]: Without dead ends: 666 [2023-11-28 23:44:06,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:44:06,168 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 179 mSDsluCounter, 5084 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 5949 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:06,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 5949 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-28 23:44:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 648. [2023-11-28 23:44:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 515 states have (on average 1.6563106796116505) internal successors, (853), 537 states have internal predecessors, (853), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:44:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1057 transitions. [2023-11-28 23:44:06,285 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1057 transitions. Word has length 117 [2023-11-28 23:44:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:06,285 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1057 transitions. [2023-11-28 23:44:06,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 23:44:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1057 transitions. [2023-11-28 23:44:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-28 23:44:06,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:06,288 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] [2023-11-28 23:44:06,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:44:06,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:44:06,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:06,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:06,489 INFO L85 PathProgramCache]: Analyzing trace with hash 599414761, now seen corresponding path program 1 times [2023-11-28 23:44:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:06,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232262030] [2023-11-28 23:44:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:06,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:44:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:44:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:44:07,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:07,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232262030] [2023-11-28 23:44:07,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232262030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:07,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119777773] [2023-11-28 23:44:07,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:07,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:07,109 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:07,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:44:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:07,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:44:07,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-28 23:44:07,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119777773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:07,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:07,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-28 23:44:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904772942] [2023-11-28 23:44:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:07,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:44:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:44:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:07,421 INFO L87 Difference]: Start difference. First operand 648 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:44:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:07,638 INFO L93 Difference]: Finished difference Result 1244 states and 2045 transitions. [2023-11-28 23:44:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:44:07,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-28 23:44:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:07,643 INFO L225 Difference]: With dead ends: 1244 [2023-11-28 23:44:07,643 INFO L226 Difference]: Without dead ends: 676 [2023-11-28 23:44:07,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:07,646 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 14 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:07,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2605 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:07,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-28 23:44:07,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 672. [2023-11-28 23:44:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 539 states have (on average 1.634508348794063) internal successors, (881), 561 states have internal predecessors, (881), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:44:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1085 transitions. [2023-11-28 23:44:07,790 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1085 transitions. Word has length 118 [2023-11-28 23:44:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:07,790 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1085 transitions. [2023-11-28 23:44:07,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:44:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1085 transitions. [2023-11-28 23:44:07,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-28 23:44:07,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:07,793 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] [2023-11-28 23:44:07,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:44:07,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:44:07,994 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:07,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:07,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2020482586, now seen corresponding path program 1 times [2023-11-28 23:44:07,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:07,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018527370] [2023-11-28 23:44:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:07,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-28 23:44:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:44:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-28 23:44:08,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018527370] [2023-11-28 23:44:08,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018527370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543008573] [2023-11-28 23:44:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:08,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:08,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:08,640 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:08,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:44:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:44:08,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:44:08,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543008573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:08,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:08,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-28 23:44:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279918232] [2023-11-28 23:44:08,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:08,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:44:08,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:44:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:08,973 INFO L87 Difference]: Start difference. First operand 672 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:44:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:09,354 INFO L93 Difference]: Finished difference Result 1267 states and 2090 transitions. [2023-11-28 23:44:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:44:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-28 23:44:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:09,359 INFO L225 Difference]: With dead ends: 1267 [2023-11-28 23:44:09,359 INFO L226 Difference]: Without dead ends: 792 [2023-11-28 23:44:09,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:44:09,361 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 321 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:09,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 3636 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:44:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-11-28 23:44:09,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 675. [2023-11-28 23:44:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6309963099630995) internal successors, (884), 564 states have internal predecessors, (884), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:44:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1088 transitions. [2023-11-28 23:44:09,460 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1088 transitions. Word has length 118 [2023-11-28 23:44:09,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:09,460 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1088 transitions. [2023-11-28 23:44:09,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-28 23:44:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1088 transitions. [2023-11-28 23:44:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-28 23:44:09,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:09,463 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] [2023-11-28 23:44:09,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:09,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:44:09,663 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:09,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:09,664 INFO L85 PathProgramCache]: Analyzing trace with hash -122521935, now seen corresponding path program 1 times [2023-11-28 23:44:09,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:09,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762830011] [2023-11-28 23:44:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:09,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:09,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:44:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-28 23:44:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-28 23:44:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:10,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:10,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762830011] [2023-11-28 23:44:10,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762830011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:10,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224569233] [2023-11-28 23:44:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:10,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:10,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:10,300 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:10,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:44:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:10,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:44:10,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:44:10,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224569233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:10,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-28 23:44:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970250388] [2023-11-28 23:44:10,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:10,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:44:10,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:44:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:10,644 INFO L87 Difference]: Start difference. First operand 675 states and 1088 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), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:44:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:10,821 INFO L93 Difference]: Finished difference Result 1166 states and 1910 transitions. [2023-11-28 23:44:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:44:10,821 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), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2023-11-28 23:44:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:10,825 INFO L225 Difference]: With dead ends: 1166 [2023-11-28 23:44:10,825 INFO L226 Difference]: Without dead ends: 688 [2023-11-28 23:44:10,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:10,828 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 12 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:10,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2650 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:44:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-11-28 23:44:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 678. [2023-11-28 23:44:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 545 states have (on average 1.6293577981651377) internal successors, (888), 567 states have internal predecessors, (888), 100 states have call successors, (100), 27 states have call predecessors, (100), 32 states have return successors, (104), 96 states have call predecessors, (104), 95 states have call successors, (104) [2023-11-28 23:44:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1092 transitions. [2023-11-28 23:44:10,982 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1092 transitions. Word has length 120 [2023-11-28 23:44:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:10,983 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1092 transitions. [2023-11-28 23:44:10,983 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), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:44:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1092 transitions. [2023-11-28 23:44:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-28 23:44:10,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:10,997 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] [2023-11-28 23:44:11,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:44:11,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:11,202 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:11,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:11,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1648817484, now seen corresponding path program 1 times [2023-11-28 23:44:11,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293142288] [2023-11-28 23:44:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:11,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 23:44:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-28 23:44:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:11,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:11,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293142288] [2023-11-28 23:44:11,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293142288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:11,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603850730] [2023-11-28 23:44:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:11,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:11,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:11,879 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:11,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:44:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:12,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:44:12,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:44:12,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603850730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:12,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-28 23:44:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86043976] [2023-11-28 23:44:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:44:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:44:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:12,171 INFO L87 Difference]: Start difference. First operand 678 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:44:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:12,540 INFO L93 Difference]: Finished difference Result 1598 states and 2659 transitions. [2023-11-28 23:44:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:44:12,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2023-11-28 23:44:12,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:12,546 INFO L225 Difference]: With dead ends: 1598 [2023-11-28 23:44:12,546 INFO L226 Difference]: Without dead ends: 1117 [2023-11-28 23:44:12,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:12,549 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 832 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:12,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1652 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-28 23:44:12,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1102. [2023-11-28 23:44:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 870 states have (on average 1.6264367816091954) internal successors, (1415), 905 states have internal predecessors, (1415), 178 states have call successors, (178), 46 states have call predecessors, (178), 53 states have return successors, (206), 176 states have call predecessors, (206), 173 states have call successors, (206) [2023-11-28 23:44:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1799 transitions. [2023-11-28 23:44:12,745 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1799 transitions. Word has length 123 [2023-11-28 23:44:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:12,745 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1799 transitions. [2023-11-28 23:44:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:44:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1799 transitions. [2023-11-28 23:44:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-28 23:44:12,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:12,749 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] [2023-11-28 23:44:12,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:44:12,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-28 23:44:12,950 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:12,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1724457469, now seen corresponding path program 1 times [2023-11-28 23:44:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378419661] [2023-11-28 23:44:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378419661] [2023-11-28 23:44:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378419661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608234078] [2023-11-28 23:44:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:13,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:13,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:13,635 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:13,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:44:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:13,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:44:13,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:44:14,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:14,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608234078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:14,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:14,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2023-11-28 23:44:14,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18407918] [2023-11-28 23:44:14,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:14,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:44:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:44:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:14,094 INFO L87 Difference]: Start difference. First operand 1102 states and 1799 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:44:14,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:14,715 INFO L93 Difference]: Finished difference Result 1177 states and 1919 transitions. [2023-11-28 23:44:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:44:14,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 124 [2023-11-28 23:44:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:14,723 INFO L225 Difference]: With dead ends: 1177 [2023-11-28 23:44:14,723 INFO L226 Difference]: Without dead ends: 1162 [2023-11-28 23:44:14,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:14,725 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 834 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:14,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2263 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:44:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2023-11-28 23:44:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1106. [2023-11-28 23:44:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 874 states have (on average 1.6235697940503433) internal successors, (1419), 909 states have internal predecessors, (1419), 178 states have call successors, (178), 46 states have call predecessors, (178), 53 states have return successors, (206), 176 states have call predecessors, (206), 173 states have call successors, (206) [2023-11-28 23:44:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1803 transitions. [2023-11-28 23:44:14,940 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1803 transitions. Word has length 124 [2023-11-28 23:44:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:14,941 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1803 transitions. [2023-11-28 23:44:14,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:44:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1803 transitions. [2023-11-28 23:44:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-28 23:44:14,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:14,945 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] [2023-11-28 23:44:14,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:44:15,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:15,145 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:15,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash 885451528, now seen corresponding path program 1 times [2023-11-28 23:44:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:15,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584014884] [2023-11-28 23:44:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:15,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584014884] [2023-11-28 23:44:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584014884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940309956] [2023-11-28 23:44:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:15,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:15,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:15,734 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:15,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:44:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:16,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:44:16,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:44:16,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940309956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:16,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:16,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-28 23:44:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542640377] [2023-11-28 23:44:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:16,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:44:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:44:16,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:16,055 INFO L87 Difference]: Start difference. First operand 1106 states and 1803 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-28 23:44:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:16,300 INFO L93 Difference]: Finished difference Result 1125 states and 1827 transitions. [2023-11-28 23:44:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:44:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 129 [2023-11-28 23:44:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:16,307 INFO L225 Difference]: With dead ends: 1125 [2023-11-28 23:44:16,307 INFO L226 Difference]: Without dead ends: 1110 [2023-11-28 23:44:16,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:44:16,308 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 34 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:16,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3515 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:44:16,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2023-11-28 23:44:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1106. [2023-11-28 23:44:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 874 states have (on average 1.6212814645308924) internal successors, (1417), 909 states have internal predecessors, (1417), 178 states have call successors, (178), 46 states have call predecessors, (178), 53 states have return successors, (206), 176 states have call predecessors, (206), 173 states have call successors, (206) [2023-11-28 23:44:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1801 transitions. [2023-11-28 23:44:16,485 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1801 transitions. Word has length 129 [2023-11-28 23:44:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:16,485 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1801 transitions. [2023-11-28 23:44:16,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-28 23:44:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1801 transitions. [2023-11-28 23:44:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-28 23:44:16,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:16,488 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] [2023-11-28 23:44:16,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:44:16,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:16,689 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:16,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash -707433947, now seen corresponding path program 1 times [2023-11-28 23:44:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:16,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916046079] [2023-11-28 23:44:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:44:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:17,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:17,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916046079] [2023-11-28 23:44:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916046079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:17,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406570599] [2023-11-28 23:44:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:17,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:17,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:17,339 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:17,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 23:44:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:17,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:44:17,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:44:17,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406570599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:17,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:17,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-28 23:44:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366442131] [2023-11-28 23:44:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:44:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:17,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:44:17,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:17,671 INFO L87 Difference]: Start difference. First operand 1106 states and 1801 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:17,903 INFO L93 Difference]: Finished difference Result 2192 states and 3578 transitions. [2023-11-28 23:44:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:44:17,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2023-11-28 23:44:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:17,910 INFO L225 Difference]: With dead ends: 2192 [2023-11-28 23:44:17,910 INFO L226 Difference]: Without dead ends: 1076 [2023-11-28 23:44:17,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:17,914 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 11 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:17,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2625 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:44:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-11-28 23:44:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076. [2023-11-28 23:44:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 847 states have (on average 1.6198347107438016) internal successors, (1372), 880 states have internal predecessors, (1372), 177 states have call successors, (177), 46 states have call predecessors, (177), 51 states have return successors, (203), 175 states have call predecessors, (203), 172 states have call successors, (203) [2023-11-28 23:44:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1752 transitions. [2023-11-28 23:44:18,089 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1752 transitions. Word has length 138 [2023-11-28 23:44:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:18,089 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1752 transitions. [2023-11-28 23:44:18,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1752 transitions. [2023-11-28 23:44:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-28 23:44:18,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:18,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:18,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:18,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:18,292 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:18,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash 144530554, now seen corresponding path program 1 times [2023-11-28 23:44:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:18,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767757407] [2023-11-28 23:44:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:18,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-28 23:44:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-28 23:44:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,900 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-28 23:44:18,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:18,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767757407] [2023-11-28 23:44:18,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767757407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:18,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355255408] [2023-11-28 23:44:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:18,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:18,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:18,901 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:18,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 23:44:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:19,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:44:19,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:44:19,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355255408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:19,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:19,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-28 23:44:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419207224] [2023-11-28 23:44:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:19,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:19,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:19,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:19,217 INFO L87 Difference]: Start difference. First operand 1076 states and 1752 transitions. Second operand has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-28 23:44:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:19,507 INFO L93 Difference]: Finished difference Result 2126 states and 3473 transitions. [2023-11-28 23:44:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:44:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2023-11-28 23:44:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:19,516 INFO L225 Difference]: With dead ends: 2126 [2023-11-28 23:44:19,516 INFO L226 Difference]: Without dead ends: 1075 [2023-11-28 23:44:19,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:44:19,520 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 142 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 5199 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:19,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 5199 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2023-11-28 23:44:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1055. [2023-11-28 23:44:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 826 states have (on average 1.6198547215496368) internal successors, (1338), 859 states have internal predecessors, (1338), 177 states have call successors, (177), 46 states have call predecessors, (177), 51 states have return successors, (203), 175 states have call predecessors, (203), 172 states have call successors, (203) [2023-11-28 23:44:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1718 transitions. [2023-11-28 23:44:19,756 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1718 transitions. Word has length 140 [2023-11-28 23:44:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:19,756 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1718 transitions. [2023-11-28 23:44:19,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-28 23:44:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1718 transitions. [2023-11-28 23:44:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-28 23:44:19,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:19,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:19,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-28 23:44:19,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-28 23:44:19,959 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:19,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1671674369, now seen corresponding path program 1 times [2023-11-28 23:44:19,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282458847] [2023-11-28 23:44:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:19,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 23:44:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-28 23:44:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:44:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282458847] [2023-11-28 23:44:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282458847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793337757] [2023-11-28 23:44:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:20,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:20,584 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:20,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 23:44:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:20,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:44:20,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:44:20,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793337757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:20,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-28 23:44:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308601629] [2023-11-28 23:44:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:44:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:44:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:20,904 INFO L87 Difference]: Start difference. First operand 1055 states and 1718 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:21,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:21,236 INFO L93 Difference]: Finished difference Result 2085 states and 3408 transitions. [2023-11-28 23:44:21,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:44:21,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2023-11-28 23:44:21,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:21,243 INFO L225 Difference]: With dead ends: 2085 [2023-11-28 23:44:21,243 INFO L226 Difference]: Without dead ends: 1055 [2023-11-28 23:44:21,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:44:21,247 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 174 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:21,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2460 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:44:21,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-11-28 23:44:21,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1055. [2023-11-28 23:44:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 826 states have (on average 1.61864406779661) internal successors, (1337), 859 states have internal predecessors, (1337), 177 states have call successors, (177), 46 states have call predecessors, (177), 51 states have return successors, (203), 175 states have call predecessors, (203), 172 states have call successors, (203) [2023-11-28 23:44:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1717 transitions. [2023-11-28 23:44:21,419 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1717 transitions. Word has length 142 [2023-11-28 23:44:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:21,419 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1717 transitions. [2023-11-28 23:44:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1717 transitions. [2023-11-28 23:44:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-28 23:44:21,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:21,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:21,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-28 23:44:21,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:21,622 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:21,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1166902467, now seen corresponding path program 1 times [2023-11-28 23:44:21,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:21,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650346699] [2023-11-28 23:44:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:21,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:21,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:21,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-28 23:44:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:22,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:22,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650346699] [2023-11-28 23:44:22,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650346699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:22,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:22,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:44:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339570219] [2023-11-28 23:44:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:22,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:22,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:44:22,206 INFO L87 Difference]: Start difference. First operand 1055 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:28,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:28,635 INFO L93 Difference]: Finished difference Result 2509 states and 4196 transitions. [2023-11-28 23:44:28,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:44:28,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2023-11-28 23:44:28,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:28,646 INFO L225 Difference]: With dead ends: 2509 [2023-11-28 23:44:28,646 INFO L226 Difference]: Without dead ends: 1466 [2023-11-28 23:44:28,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:44:28,651 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 942 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:28,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1671 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-28 23:44:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2023-11-28 23:44:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1076. [2023-11-28 23:44:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 836 states have (on average 1.6160287081339713) internal successors, (1351), 867 states have internal predecessors, (1351), 188 states have call successors, (188), 46 states have call predecessors, (188), 51 states have return successors, (215), 186 states have call predecessors, (215), 183 states have call successors, (215) [2023-11-28 23:44:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1754 transitions. [2023-11-28 23:44:28,897 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1754 transitions. Word has length 143 [2023-11-28 23:44:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:28,898 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1754 transitions. [2023-11-28 23:44:28,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1754 transitions. [2023-11-28 23:44:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-28 23:44:28,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:28,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:28,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-28 23:44:28,901 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:28,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash 274305133, now seen corresponding path program 1 times [2023-11-28 23:44:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053691695] [2023-11-28 23:44:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-28 23:44:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:29,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053691695] [2023-11-28 23:44:29,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053691695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:29,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:29,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:44:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378721800] [2023-11-28 23:44:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:29,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:44:29,536 INFO L87 Difference]: Start difference. First operand 1076 states and 1754 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:35,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:35,543 INFO L93 Difference]: Finished difference Result 2449 states and 4099 transitions. [2023-11-28 23:44:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:44:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2023-11-28 23:44:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:35,551 INFO L225 Difference]: With dead ends: 2449 [2023-11-28 23:44:35,551 INFO L226 Difference]: Without dead ends: 1467 [2023-11-28 23:44:35,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:44:35,555 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1847 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:35,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 1565 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 2843 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-28 23:44:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2023-11-28 23:44:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1076. [2023-11-28 23:44:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 836 states have (on average 1.6148325358851674) internal successors, (1350), 867 states have internal predecessors, (1350), 188 states have call successors, (188), 46 states have call predecessors, (188), 51 states have return successors, (215), 186 states have call predecessors, (215), 183 states have call successors, (215) [2023-11-28 23:44:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1753 transitions. [2023-11-28 23:44:35,772 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1753 transitions. Word has length 144 [2023-11-28 23:44:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:35,773 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1753 transitions. [2023-11-28 23:44:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1753 transitions. [2023-11-28 23:44:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-28 23:44:35,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:35,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:35,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-28 23:44:35,775 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:35,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1012538181, now seen corresponding path program 1 times [2023-11-28 23:44:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34433849] [2023-11-28 23:44:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-28 23:44:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:44:36,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:36,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34433849] [2023-11-28 23:44:36,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34433849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:36,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:36,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:44:36,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059745150] [2023-11-28 23:44:36,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:36,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:36,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:36,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:36,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:44:36,393 INFO L87 Difference]: Start difference. First operand 1076 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:42,099 INFO L93 Difference]: Finished difference Result 2493 states and 4162 transitions. [2023-11-28 23:44:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:44:42,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-28 23:44:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:42,108 INFO L225 Difference]: With dead ends: 2493 [2023-11-28 23:44:42,108 INFO L226 Difference]: Without dead ends: 1454 [2023-11-28 23:44:42,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:42,112 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1421 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:42,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1605 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-28 23:44:42,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2023-11-28 23:44:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1064. [2023-11-28 23:44:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 824 states have (on average 1.6213592233009708) internal successors, (1336), 855 states have internal predecessors, (1336), 188 states have call successors, (188), 46 states have call predecessors, (188), 51 states have return successors, (215), 186 states have call predecessors, (215), 183 states have call successors, (215) [2023-11-28 23:44:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1739 transitions. [2023-11-28 23:44:42,352 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1739 transitions. Word has length 145 [2023-11-28 23:44:42,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:42,352 INFO L495 AbstractCegarLoop]: Abstraction has 1064 states and 1739 transitions. [2023-11-28 23:44:42,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1739 transitions. [2023-11-28 23:44:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-28 23:44:42,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:42,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:42,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-28 23:44:42,354 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:42,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:42,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1713773383, now seen corresponding path program 1 times [2023-11-28 23:44:42,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:42,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394952648] [2023-11-28 23:44:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:42,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-28 23:44:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:44:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394952648] [2023-11-28 23:44:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394952648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:42,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:42,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:44:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572185789] [2023-11-28 23:44:42,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:42,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:44:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:44:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:44:42,930 INFO L87 Difference]: Start difference. First operand 1064 states and 1739 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:48,860 INFO L93 Difference]: Finished difference Result 2516 states and 4196 transitions. [2023-11-28 23:44:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:44:48,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-28 23:44:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:48,869 INFO L225 Difference]: With dead ends: 2516 [2023-11-28 23:44:48,870 INFO L226 Difference]: Without dead ends: 1483 [2023-11-28 23:44:48,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:44:48,875 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1879 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:48,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1960 Valid, 1565 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-28 23:44:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-11-28 23:44:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1068. [2023-11-28 23:44:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 828 states have (on average 1.6171497584541064) internal successors, (1339), 859 states have internal predecessors, (1339), 188 states have call successors, (188), 46 states have call predecessors, (188), 51 states have return successors, (215), 186 states have call predecessors, (215), 183 states have call successors, (215) [2023-11-28 23:44:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1742 transitions. [2023-11-28 23:44:49,134 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1742 transitions. Word has length 145 [2023-11-28 23:44:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:49,134 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1742 transitions. [2023-11-28 23:44:49,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 23:44:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1742 transitions. [2023-11-28 23:44:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-28 23:44:49,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:49,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:49,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-28 23:44:49,138 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:49,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash -246928346, now seen corresponding path program 1 times [2023-11-28 23:44:49,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:49,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062988970] [2023-11-28 23:44:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:49,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:44:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:44:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:44:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:44:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:44:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:44:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:44:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:44:49,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:49,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062988970] [2023-11-28 23:44:49,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062988970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:49,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-28 23:44:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76819466] [2023-11-28 23:44:49,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:49,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:44:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:44:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:49,906 INFO L87 Difference]: Start difference. First operand 1068 states and 1742 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-28 23:45:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:05,109 INFO L93 Difference]: Finished difference Result 3740 states and 6455 transitions. [2023-11-28 23:45:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-28 23:45:05,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 146 [2023-11-28 23:45:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:05,122 INFO L225 Difference]: With dead ends: 3740 [2023-11-28 23:45:05,122 INFO L226 Difference]: Without dead ends: 2771 [2023-11-28 23:45:05,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2023-11-28 23:45:05,125 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 4209 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 7094 mSolverCounterSat, 1390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4285 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 8484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 7094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:05,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4285 Valid, 3765 Invalid, 8484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1390 Valid, 7094 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-28 23:45:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2023-11-28 23:45:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 1970. [2023-11-28 23:45:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1527 states have (on average 1.6326129666011788) internal successors, (2493), 1578 states have internal predecessors, (2493), 349 states have call successors, (349), 82 states have call predecessors, (349), 93 states have return successors, (402), 357 states have call predecessors, (402), 344 states have call successors, (402) [2023-11-28 23:45:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 3244 transitions. [2023-11-28 23:45:05,586 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 3244 transitions. Word has length 146 [2023-11-28 23:45:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:05,586 INFO L495 AbstractCegarLoop]: Abstraction has 1970 states and 3244 transitions. [2023-11-28 23:45:05,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 7 states have internal predecessors, (101), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-28 23:45:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 3244 transitions. [2023-11-28 23:45:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-28 23:45:05,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:05,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:05,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-28 23:45:05,589 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:05,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1459645933, now seen corresponding path program 1 times [2023-11-28 23:45:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:05,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3292184] [2023-11-28 23:45:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:05,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:45:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:45:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:05,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:45:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:45:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:45:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:45:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 23:45:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-28 23:45:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-28 23:45:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-28 23:45:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-28 23:45:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:45:06,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:06,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3292184] [2023-11-28 23:45:06,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3292184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:45:06,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392391597] [2023-11-28 23:45:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:06,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:45:06,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:45:06,388 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:45:06,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 23:45:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:06,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:45:06,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:45:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:45:06,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:45:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392391597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:06,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:45:06,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2023-11-28 23:45:06,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885038128] [2023-11-28 23:45:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:06,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:06,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:06,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:45:06,718 INFO L87 Difference]: Start difference. First operand 1970 states and 3244 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-28 23:45:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:07,566 INFO L93 Difference]: Finished difference Result 4217 states and 7078 transitions. [2023-11-28 23:45:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:07,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2023-11-28 23:45:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:07,577 INFO L225 Difference]: With dead ends: 4217 [2023-11-28 23:45:07,577 INFO L226 Difference]: Without dead ends: 2663 [2023-11-28 23:45:07,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:45:07,581 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 875 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:07,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1465 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:45:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-11-28 23:45:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2648. [2023-11-28 23:45:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 2053 states have (on average 1.6132489040428641) internal successors, (3312), 2115 states have internal predecessors, (3312), 462 states have call successors, (462), 117 states have call predecessors, (462), 132 states have return successors, (614), 475 states have call predecessors, (614), 457 states have call successors, (614) [2023-11-28 23:45:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 4388 transitions. [2023-11-28 23:45:08,268 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 4388 transitions. Word has length 149 [2023-11-28 23:45:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:08,268 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 4388 transitions. [2023-11-28 23:45:08,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-28 23:45:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 4388 transitions. [2023-11-28 23:45:08,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-28 23:45:08,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:08,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:08,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-28 23:45:08,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:45:08,472 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:08,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash 573718128, now seen corresponding path program 1 times [2023-11-28 23:45:08,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:08,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906947889] [2023-11-28 23:45:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:08,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:45:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:45:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:45:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:45:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:45:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:45:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:45:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-28 23:45:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-28 23:45:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-28 23:45:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-28 23:45:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:45:09,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906947889] [2023-11-28 23:45:09,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906947889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:09,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:09,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-28 23:45:09,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220094638] [2023-11-28 23:45:09,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:09,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:45:09,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:45:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:45:09,435 INFO L87 Difference]: Start difference. First operand 2648 states and 4388 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 10 states have internal predecessors, (106), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-28 23:45:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:38,087 INFO L93 Difference]: Finished difference Result 10166 states and 18391 transitions. [2023-11-28 23:45:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-28 23:45:38,088 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 10 states have internal predecessors, (106), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 153 [2023-11-28 23:45:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:38,126 INFO L225 Difference]: With dead ends: 10166 [2023-11-28 23:45:38,126 INFO L226 Difference]: Without dead ends: 7620 [2023-11-28 23:45:38,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=634, Invalid=3026, Unknown=0, NotChecked=0, Total=3660 [2023-11-28 23:45:38,139 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 8180 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 8618 mSolverCounterSat, 2408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8243 SdHoareTripleChecker+Valid, 4634 SdHoareTripleChecker+Invalid, 11026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2408 IncrementalHoareTripleChecker+Valid, 8618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:38,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8243 Valid, 4634 Invalid, 11026 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2408 Valid, 8618 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-11-28 23:45:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2023-11-28 23:45:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 5895. [2023-11-28 23:45:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5895 states, 4574 states have (on average 1.5870135548753825) internal successors, (7259), 4708 states have internal predecessors, (7259), 986 states have call successors, (986), 282 states have call predecessors, (986), 334 states have return successors, (1719), 1024 states have call predecessors, (1719), 981 states have call successors, (1719) [2023-11-28 23:45:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5895 states to 5895 states and 9964 transitions. [2023-11-28 23:45:39,863 INFO L78 Accepts]: Start accepts. Automaton has 5895 states and 9964 transitions. Word has length 153 [2023-11-28 23:45:39,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:39,863 INFO L495 AbstractCegarLoop]: Abstraction has 5895 states and 9964 transitions. [2023-11-28 23:45:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 10 states have internal predecessors, (106), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-28 23:45:39,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5895 states and 9964 transitions. [2023-11-28 23:45:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-28 23:45:39,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:39,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-28 23:45:39,869 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:39,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1317250543, now seen corresponding path program 1 times [2023-11-28 23:45:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30930833] [2023-11-28 23:45:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:45:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:45:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:45:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:45:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:45:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:45:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:45:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-28 23:45:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-28 23:45:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-28 23:45:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-28 23:45:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:45:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30930833] [2023-11-28 23:45:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30930833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:45:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810936703] [2023-11-28 23:45:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:41,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:45:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:45:41,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:45:41,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 23:45:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:41,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:45:41,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:45:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:45:41,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:45:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810936703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:45:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [19] total 22 [2023-11-28 23:45:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737569474] [2023-11-28 23:45:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:41,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:45:41,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:45:41,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:45:41,430 INFO L87 Difference]: Start difference. First operand 5895 states and 9964 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 4 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-28 23:45:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:43,453 INFO L93 Difference]: Finished difference Result 12429 states and 21173 transitions. [2023-11-28 23:45:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:45:43,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 4 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 157 [2023-11-28 23:45:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:43,484 INFO L225 Difference]: With dead ends: 12429 [2023-11-28 23:45:43,484 INFO L226 Difference]: Without dead ends: 7139 [2023-11-28 23:45:43,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:45:43,506 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 386 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 4152 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:43,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 4152 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:45:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7139 states. [2023-11-28 23:45:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7139 to 7139. [2023-11-28 23:45:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7139 states, 5640 states have (on average 1.5835106382978723) internal successors, (8931), 5796 states have internal predecessors, (8931), 1112 states have call successors, (1112), 312 states have call predecessors, (1112), 386 states have return successors, (1845), 1150 states have call predecessors, (1845), 1107 states have call successors, (1845) [2023-11-28 23:45:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 11888 transitions. [2023-11-28 23:45:45,212 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 11888 transitions. Word has length 157 [2023-11-28 23:45:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:45,213 INFO L495 AbstractCegarLoop]: Abstraction has 7139 states and 11888 transitions. [2023-11-28 23:45:45,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 4 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-28 23:45:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 11888 transitions. [2023-11-28 23:45:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-28 23:45:45,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:45,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:45,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-28 23:45:45,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:45:45,417 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:45,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash -226098552, now seen corresponding path program 1 times [2023-11-28 23:45:45,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:45,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689977890] [2023-11-28 23:45:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:45,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:45:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:45:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:45:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:45:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:45:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:45:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:45:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-28 23:45:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:45:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-28 23:45:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-28 23:45:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-28 23:45:46,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:46,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689977890] [2023-11-28 23:45:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689977890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-28 23:45:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586726560] [2023-11-28 23:45:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:46,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:45:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:45:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:45:46,548 INFO L87 Difference]: Start difference. First operand 7139 states and 11888 transitions. Second operand has 23 states, 20 states have (on average 5.4) internal successors, (108), 17 states have internal predecessors, (108), 9 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-28 23:47:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:47:25,330 INFO L93 Difference]: Finished difference Result 53815 states and 105948 transitions. [2023-11-28 23:47:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2023-11-28 23:47:25,331 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.4) internal successors, (108), 17 states have internal predecessors, (108), 9 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) Word has length 158 [2023-11-28 23:47:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:47:25,688 INFO L225 Difference]: With dead ends: 53815 [2023-11-28 23:47:25,688 INFO L226 Difference]: Without dead ends: 46703 [2023-11-28 23:47:25,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34570 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=7632, Invalid=71048, Unknown=0, NotChecked=0, Total=78680 [2023-11-28 23:47:25,794 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 12028 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 31740 mSolverCounterSat, 4089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12097 SdHoareTripleChecker+Valid, 15130 SdHoareTripleChecker+Invalid, 35829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4089 IncrementalHoareTripleChecker+Valid, 31740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:47:25,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12097 Valid, 15130 Invalid, 35829 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4089 Valid, 31740 Invalid, 0 Unknown, 0 Unchecked, 36.2s Time] [2023-11-28 23:47:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46703 states. [2023-11-28 23:47:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46703 to 34598. [2023-11-28 23:47:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34598 states, 26430 states have (on average 1.5517972001513431) internal successors, (41014), 27442 states have internal predecessors, (41014), 6176 states have call successors, (6176), 1638 states have call predecessors, (6176), 1991 states have return successors, (11518), 6271 states have call predecessors, (11518), 6171 states have call successors, (11518) [2023-11-28 23:47:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34598 states to 34598 states and 58708 transitions. [2023-11-28 23:47:36,933 INFO L78 Accepts]: Start accepts. Automaton has 34598 states and 58708 transitions. Word has length 158 [2023-11-28 23:47:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:47:36,933 INFO L495 AbstractCegarLoop]: Abstraction has 34598 states and 58708 transitions. [2023-11-28 23:47:36,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.4) internal successors, (108), 17 states have internal predecessors, (108), 9 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-28 23:47:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 34598 states and 58708 transitions. [2023-11-28 23:47:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-28 23:47:36,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:47:36,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:47:36,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-28 23:47:36,942 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:47:36,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:47:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2034186310, now seen corresponding path program 1 times [2023-11-28 23:47:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:47:36,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572102166] [2023-11-28 23:47:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:36,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:47:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:47:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:47:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:47:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:47:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:47:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:47:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:47:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:47:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:47:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:47:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:47:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:47:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:47:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:47:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:47:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:47:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:47:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-28 23:47:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-28 23:47:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:47:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:47:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572102166] [2023-11-28 23:47:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572102166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:47:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959661497] [2023-11-28 23:47:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:47:37,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:47:37,806 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:47:37,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-28 23:47:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:38,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:47:38,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:47:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-28 23:47:38,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:47:38,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959661497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:47:38,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:47:38,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-28 23:47:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917420020] [2023-11-28 23:47:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:47:38,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:47:38,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:47:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:47:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:47:38,149 INFO L87 Difference]: Start difference. First operand 34598 states and 58708 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-28 23:47:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:47:48,922 INFO L93 Difference]: Finished difference Result 69825 states and 122292 transitions. [2023-11-28 23:47:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:47:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2023-11-28 23:47:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:47:49,110 INFO L225 Difference]: With dead ends: 69825 [2023-11-28 23:47:49,110 INFO L226 Difference]: Without dead ends: 35302 [2023-11-28 23:47:49,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:47:49,239 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 22 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:47:49,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2497 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:47:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35302 states. [2023-11-28 23:47:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35302 to 35302. [2023-11-28 23:47:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35302 states, 27046 states have (on average 1.5548325075796792) internal successors, (42052), 28058 states have internal predecessors, (42052), 6176 states have call successors, (6176), 1726 states have call predecessors, (6176), 2079 states have return successors, (11570), 6271 states have call predecessors, (11570), 6171 states have call successors, (11570) [2023-11-28 23:47:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35302 states to 35302 states and 59798 transitions. [2023-11-28 23:47:59,975 INFO L78 Accepts]: Start accepts. Automaton has 35302 states and 59798 transitions. Word has length 162 [2023-11-28 23:47:59,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:47:59,976 INFO L495 AbstractCegarLoop]: Abstraction has 35302 states and 59798 transitions. [2023-11-28 23:47:59,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-28 23:47:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 35302 states and 59798 transitions. [2023-11-28 23:47:59,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-28 23:47:59,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:47:59,980 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, 1, 1, 1, 1, 1] [2023-11-28 23:47:59,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-28 23:48:00,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-28 23:48:00,181 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:48:00,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:48:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1862478404, now seen corresponding path program 1 times [2023-11-28 23:48:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:48:00,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978425267] [2023-11-28 23:48:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:48:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:48:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:48:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:48:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:48:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:00,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:48:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 23:48:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:48:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:48:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-28 23:48:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-28 23:48:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-28 23:48:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 23:48:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:48:01,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:48:01,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978425267] [2023-11-28 23:48:01,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978425267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:48:01,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452483464] [2023-11-28 23:48:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:01,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:48:01,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:48:01,353 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:48:01,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-28 23:48:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:01,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:48:01,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:48:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-28 23:48:02,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:48:02,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452483464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:48:02,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:48:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 23 [2023-11-28 23:48:02,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722478132] [2023-11-28 23:48:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:48:02,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:48:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:48:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:48:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:48:02,728 INFO L87 Difference]: Start difference. First operand 35302 states and 59798 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-28 23:48:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:48:17,841 INFO L93 Difference]: Finished difference Result 79008 states and 133873 transitions. [2023-11-28 23:48:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:48:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 163 [2023-11-28 23:48:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:48:18,082 INFO L225 Difference]: With dead ends: 79008 [2023-11-28 23:48:18,082 INFO L226 Difference]: Without dead ends: 43805 [2023-11-28 23:48:18,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-11-28 23:48:18,189 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1316 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:48:18,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1898 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:48:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43805 states. [2023-11-28 23:48:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43805 to 43186. [2023-11-28 23:48:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43186 states, 33217 states have (on average 1.5564620525634465) internal successors, (51701), 34357 states have internal predecessors, (51701), 7436 states have call successors, (7436), 2137 states have call predecessors, (7436), 2532 states have return successors, (13800), 7446 states have call predecessors, (13800), 7431 states have call successors, (13800) [2023-11-28 23:48:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43186 states to 43186 states and 72937 transitions. [2023-11-28 23:48:30,644 INFO L78 Accepts]: Start accepts. Automaton has 43186 states and 72937 transitions. Word has length 163 [2023-11-28 23:48:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:48:30,645 INFO L495 AbstractCegarLoop]: Abstraction has 43186 states and 72937 transitions. [2023-11-28 23:48:30,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 6 states have internal predecessors, (109), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-28 23:48:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 43186 states and 72937 transitions. [2023-11-28 23:48:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-28 23:48:30,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:48:30,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:48:30,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-28 23:48:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:48:30,852 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:48:30,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:48:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1455992420, now seen corresponding path program 1 times [2023-11-28 23:48:30,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:48:30,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877621098] [2023-11-28 23:48:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:30,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:48:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:48:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:48:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:48:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:48:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:48:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 23:48:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:48:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:48:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-28 23:48:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-28 23:48:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 23:48:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-28 23:48:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-28 23:48:31,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:48:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877621098] [2023-11-28 23:48:31,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877621098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:48:31,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680623221] [2023-11-28 23:48:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:31,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:48:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:48:31,659 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:48:31,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-28 23:48:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:31,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:48:31,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:48:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-28 23:48:32,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:48:32,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680623221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:48:32,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:48:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-11-28 23:48:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370276415] [2023-11-28 23:48:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:48:32,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:48:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:48:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:48:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:48:32,004 INFO L87 Difference]: Start difference. First operand 43186 states and 72937 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-28 23:48:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:48:44,089 INFO L93 Difference]: Finished difference Result 43801 states and 74165 transitions. [2023-11-28 23:48:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:48:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 168 [2023-11-28 23:48:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:48:44,307 INFO L225 Difference]: With dead ends: 43801 [2023-11-28 23:48:44,307 INFO L226 Difference]: Without dead ends: 43786 [2023-11-28 23:48:44,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:48:44,341 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 48 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:48:44,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2666 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:48:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43786 states. [2023-11-28 23:48:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43786 to 43238. [2023-11-28 23:48:56,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43238 states, 33269 states have (on average 1.5544200306591722) internal successors, (51714), 34409 states have internal predecessors, (51714), 7436 states have call successors, (7436), 2137 states have call predecessors, (7436), 2532 states have return successors, (13800), 7446 states have call predecessors, (13800), 7431 states have call successors, (13800) [2023-11-28 23:48:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43238 states to 43238 states and 72950 transitions. [2023-11-28 23:48:57,105 INFO L78 Accepts]: Start accepts. Automaton has 43238 states and 72950 transitions. Word has length 168 [2023-11-28 23:48:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:48:57,105 INFO L495 AbstractCegarLoop]: Abstraction has 43238 states and 72950 transitions. [2023-11-28 23:48:57,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-28 23:48:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 43238 states and 72950 transitions. [2023-11-28 23:48:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-28 23:48:57,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:48:57,112 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 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] [2023-11-28 23:48:57,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-28 23:48:57,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:48:57,313 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:48:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:48:57,313 INFO L85 PathProgramCache]: Analyzing trace with hash -874286238, now seen corresponding path program 1 times [2023-11-28 23:48:57,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:48:57,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868665843] [2023-11-28 23:48:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:57,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:48:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:48:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:48:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:48:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:48:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:48:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 23:48:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 23:48:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:48:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-28 23:48:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-28 23:48:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 23:48:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-28 23:48:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-28 23:48:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-28 23:48:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-28 23:48:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-28 23:48:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-28 23:48:58,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:48:58,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868665843] [2023-11-28 23:48:58,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868665843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:48:58,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150331889] [2023-11-28 23:48:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:58,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:48:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:48:58,183 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:48:58,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-28 23:48:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:58,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 2074 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:48:58,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:48:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-28 23:48:58,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:48:58,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150331889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:48:58,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:48:58,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-11-28 23:48:58,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824517324] [2023-11-28 23:48:58,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:48:58,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:48:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:48:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:48:58,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:48:58,612 INFO L87 Difference]: Start difference. First operand 43238 states and 72950 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 23:49:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:49:23,210 INFO L93 Difference]: Finished difference Result 128738 states and 225376 transitions. [2023-11-28 23:49:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:49:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 205 [2023-11-28 23:49:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:49:23,700 INFO L225 Difference]: With dead ends: 128738 [2023-11-28 23:49:23,700 INFO L226 Difference]: Without dead ends: 85614 [2023-11-28 23:49:23,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:49:23,869 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 689 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:49:23,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2099 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:49:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85614 states. [2023-11-28 23:49:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85614 to 85599. [2023-11-28 23:49:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85599 states, 65806 states have (on average 1.55005622587606) internal successors, (102003), 68078 states have internal predecessors, (102003), 14735 states have call successors, (14735), 4266 states have call predecessors, (14735), 5057 states have return successors, (31235), 14764 states have call predecessors, (31235), 14730 states have call successors, (31235) [2023-11-28 23:49:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85599 states to 85599 states and 147973 transitions. [2023-11-28 23:49:49,465 INFO L78 Accepts]: Start accepts. Automaton has 85599 states and 147973 transitions. Word has length 205 [2023-11-28 23:49:49,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:49:49,465 INFO L495 AbstractCegarLoop]: Abstraction has 85599 states and 147973 transitions. [2023-11-28 23:49:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 23:49:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 85599 states and 147973 transitions. [2023-11-28 23:49:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-28 23:49:49,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:49:49,477 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:49:49,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-28 23:49:49,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-28 23:49:49,678 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:49:49,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:49:49,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1027694361, now seen corresponding path program 1 times [2023-11-28 23:49:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:49:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232587080] [2023-11-28 23:49:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:49:49,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:49:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:49:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:49,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:49:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:49:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:49:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:49,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:49:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:49:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:49:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:49:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:49:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:49:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 23:49:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:49:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:49:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:49:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-28 23:49:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:49:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-28 23:49:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-28 23:49:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-28 23:49:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-28 23:49:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-28 23:49:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-28 23:49:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-28 23:49:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-28 23:49:50,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:49:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232587080] [2023-11-28 23:49:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232587080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:49:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032651616] [2023-11-28 23:49:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:49:50,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:49:50,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:49:50,529 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:49:50,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-28 23:49:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:50,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:49:50,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:49:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-28 23:49:50,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:49:50,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032651616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:49:50,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:49:50,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-11-28 23:49:50,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082306737] [2023-11-28 23:49:50,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:49:50,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:49:50,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:49:50,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:49:50,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:49:50,966 INFO L87 Difference]: Start difference. First operand 85599 states and 147973 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 23:50:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:50:41,278 INFO L93 Difference]: Finished difference Result 255965 states and 461910 transitions. [2023-11-28 23:50:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:50:41,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 206 [2023-11-28 23:50:41,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:50:42,738 INFO L225 Difference]: With dead ends: 255965 [2023-11-28 23:50:42,738 INFO L226 Difference]: Without dead ends: 170492 [2023-11-28 23:50:43,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:50:43,216 INFO L413 NwaCegarLoop]: 1349 mSDtfsCounter, 693 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:50:43,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 2209 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:50:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170492 states. [2023-11-28 23:51:32,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170492 to 170477. [2023-11-28 23:51:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170477 states, 131010 states have (on average 1.5466529272574612) internal successors, (202627), 135566 states have internal predecessors, (202627), 29359 states have call successors, (29359), 8524 states have call predecessors, (29359), 10107 states have return successors, (71755), 29406 states have call predecessors, (71755), 29354 states have call successors, (71755) [2023-11-28 23:51:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170477 states to 170477 states and 303741 transitions. [2023-11-28 23:51:34,954 INFO L78 Accepts]: Start accepts. Automaton has 170477 states and 303741 transitions. Word has length 206 [2023-11-28 23:51:34,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:34,954 INFO L495 AbstractCegarLoop]: Abstraction has 170477 states and 303741 transitions. [2023-11-28 23:51:34,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 23:51:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 170477 states and 303741 transitions. [2023-11-28 23:51:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-28 23:51:34,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:34,972 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:34,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-28 23:51:35,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-28 23:51:35,172 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:51:35,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:35,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2029929543, now seen corresponding path program 1 times [2023-11-28 23:51:35,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:35,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722838353] [2023-11-28 23:51:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:51:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:51:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:51:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:51:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:51:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:51:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:51:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:51:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:51:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:51:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 23:51:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-28 23:51:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:51:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:51:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:51:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:51:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-28 23:51:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-28 23:51:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 23:51:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-28 23:51:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-28 23:51:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-28 23:51:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-28 23:51:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-28 23:51:36,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:36,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722838353] [2023-11-28 23:51:36,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722838353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:36,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276121541] [2023-11-28 23:51:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:36,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:36,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:36,093 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:36,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-28 23:51:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:51:36,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-28 23:51:36,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:51:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276121541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:36,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:51:36,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-11-28 23:51:36,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798097313] [2023-11-28 23:51:36,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:36,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:51:36,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:36,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:51:36,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:51:36,523 INFO L87 Difference]: Start difference. First operand 170477 states and 303741 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 23:53:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:53:24,728 INFO L93 Difference]: Finished difference Result 510507 states and 949643 transitions. [2023-11-28 23:53:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:53:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 207 [2023-11-28 23:53:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:53:28,421 INFO L225 Difference]: With dead ends: 510507 [2023-11-28 23:53:28,421 INFO L226 Difference]: Without dead ends: 340180 [2023-11-28 23:53:29,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:53:29,717 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 696 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:53:29,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 2292 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:53:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340180 states. [2023-11-28 23:55:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340180 to 340165. [2023-11-28 23:55:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340165 states, 261324 states have (on average 1.54398754037134) internal successors, (403481), 270476 states have internal predecessors, (403481), 58633 states have call successors, (58633), 17040 states have call predecessors, (58633), 20207 states have return successors, (166992), 58688 states have call predecessors, (166992), 58628 states have call successors, (166992) [2023-11-28 23:55:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340165 states to 340165 states and 629106 transitions. [2023-11-28 23:55:18,069 INFO L78 Accepts]: Start accepts. Automaton has 340165 states and 629106 transitions. Word has length 207 [2023-11-28 23:55:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:55:18,069 INFO L495 AbstractCegarLoop]: Abstraction has 340165 states and 629106 transitions. [2023-11-28 23:55:18,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 23:55:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand 340165 states and 629106 transitions. [2023-11-28 23:55:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-28 23:55:18,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:55:18,111 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:55:18,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-28 23:55:18,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-28 23:55:18,312 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:55:18,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:55:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash -971442726, now seen corresponding path program 1 times [2023-11-28 23:55:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:55:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601097442] [2023-11-28 23:55:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:55:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:55:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:18,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:55:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:55:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:55:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:18,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:55:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:55:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:55:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:55:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 23:55:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:55:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:55:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:55:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:55:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-28 23:55:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-28 23:55:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-28 23:55:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-28 23:55:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-28 23:55:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-28 23:55:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-28 23:55:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-28 23:55:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:55:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601097442] [2023-11-28 23:55:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601097442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:55:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648890593] [2023-11-28 23:55:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:55:19,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:55:19,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:55:19,239 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:55:19,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd37621f-c2b0-4918-80f6-4e1661468dc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-28 23:55:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:55:19,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 2080 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:55:19,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:55:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-28 23:55:19,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:55:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-28 23:55:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648890593] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:55:20,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:55:20,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 26 [2023-11-28 23:55:20,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430648086] [2023-11-28 23:55:20,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:55:20,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:55:20,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:55:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:55:20,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:55:20,487 INFO L87 Difference]: Start difference. First operand 340165 states and 629106 transitions. Second operand has 26 states, 26 states have (on average 10.807692307692308) internal successors, (281), 19 states have internal predecessors, (281), 9 states have call successors, (58), 8 states have call predecessors, (58), 14 states have return successors, (58), 14 states have call predecessors, (58), 9 states have call successors, (58)