./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product09.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_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/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_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/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_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/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 e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:17:02,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:17:02,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:17:02,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:17:02,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:17:02,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:17:02,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:17:02,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:17:02,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:17:02,587 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:17:02,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:17:02,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:17:02,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:17:02,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:17:02,590 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:17:02,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:17:02,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:17:02,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:17:02,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:17:02,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:17:02,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:17:02,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:17:02,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:17:02,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:17:02,595 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:17:02,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:17:02,607 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:17:02,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:17:02,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:17:02,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:17:02,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:17:02,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:17:02,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:17:02,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:17:02,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:17:02,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:17:02,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:17:02,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:17:02,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:17:02,613 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:17:02,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:17:02,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:17:02,614 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_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 [2023-11-29 03:17:02,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:17:02,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:17:02,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:17:02,845 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:17:02,845 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:17:02,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2023-11-29 03:17:05,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:17:05,816 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:17:05,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2023-11-29 03:17:05,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/data/0e0312929/4ccd92d6d1b44ea989d3345726edd5cd/FLAGe5b715214 [2023-11-29 03:17:05,852 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/data/0e0312929/4ccd92d6d1b44ea989d3345726edd5cd [2023-11-29 03:17:05,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:17:05,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:17:05,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:17:05,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:17:05,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:17:05,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:17:05" (1/1) ... [2023-11-29 03:17:05,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41407678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:05, skipping insertion in model container [2023-11-29 03:17:05,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:17:05" (1/1) ... [2023-11-29 03:17:05,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:17:06,083 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_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2023-11-29 03:17:06,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:17:06,368 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:17:06,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-11-29 03:17:06,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2023-11-29 03:17:06,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [423] [2023-11-29 03:17:06,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [461] [2023-11-29 03:17:06,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [822] [2023-11-29 03:17:06,381 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1005] [2023-11-29 03:17:06,381 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1097] [2023-11-29 03:17:06,381 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1768] [2023-11-29 03:17:06,381 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3206] [2023-11-29 03:17:06,381 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3219] [2023-11-29 03:17:06,385 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_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2023-11-29 03:17:06,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:17:06,504 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:17:06,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06 WrapperNode [2023-11-29 03:17:06,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:17:06,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:17:06,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:17:06,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:17:06,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,585 INFO L138 Inliner]: procedures = 89, calls = 331, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 800 [2023-11-29 03:17:06,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:17:06,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:17:06,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:17:06,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:17:06,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,605 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,632 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-29 03:17:06,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:17:06,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:17:06,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:17:06,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:17:06,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (1/1) ... [2023-11-29 03:17:06,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:17:06,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:06,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:17:06,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:17:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-29 03:17:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-29 03:17:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:17:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-29 03:17:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-29 03:17:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 03:17:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 03:17:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 03:17:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 03:17:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 03:17:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 03:17:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 03:17:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 03:17:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 03:17:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 03:17:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-29 03:17:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-29 03:17:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 03:17:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 03:17:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 03:17:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 03:17:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 03:17:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 03:17:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 03:17:06,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 03:17:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 03:17:06,782 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 03:17:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 03:17:06,782 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 03:17:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 03:17:06,782 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 03:17:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 03:17:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 03:17:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 03:17:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 03:17:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:17:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:17:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:17:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:17:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 03:17:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 03:17:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 03:17:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 03:17:06,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 03:17:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 03:17:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 03:17:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 03:17:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 03:17:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 03:17:06,797 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 03:17:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 03:17:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 03:17:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 03:17:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 03:17:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:17:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:17:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 03:17:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 03:17:06,973 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:17:06,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:17:07,879 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:17:07,979 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:17:07,980 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:17:07,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:17:07 BoogieIcfgContainer [2023-11-29 03:17:07,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:17:07,983 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:17:07,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:17:07,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:17:07,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:17:05" (1/3) ... [2023-11-29 03:17:07,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373beba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:17:07, skipping insertion in model container [2023-11-29 03:17:07,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:17:06" (2/3) ... [2023-11-29 03:17:07,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373beba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:17:07, skipping insertion in model container [2023-11-29 03:17:07,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:17:07" (3/3) ... [2023-11-29 03:17:07,989 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2023-11-29 03:17:08,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:17:08,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:17:08,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:17:08,080 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;@47bd8557, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:17:08,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:17:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 402 states have (on average 1.7462686567164178) internal successors, (702), 423 states have internal predecessors, (702), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-29 03:17:08,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 03:17:08,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:08,129 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] [2023-11-29 03:17:08,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:08,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1203108567, now seen corresponding path program 1 times [2023-11-29 03:17:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:08,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484755509] [2023-11-29 03:17:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:17:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:17:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:17:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 03:17:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:17:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 03:17:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:17:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:09,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484755509] [2023-11-29 03:17:09,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484755509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:09,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:09,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:17:09,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373986651] [2023-11-29 03:17:09,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:09,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:17:09,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:09,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:17:09,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:17:09,683 INFO L87 Difference]: Start difference. First operand has 514 states, 402 states have (on average 1.7462686567164178) internal successors, (702), 423 states have internal predecessors, (702), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 03:17:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:19,175 INFO L93 Difference]: Finished difference Result 1478 states and 2639 transitions. [2023-11-29 03:17:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:17:19,178 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-11-29 03:17:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:19,205 INFO L225 Difference]: With dead ends: 1478 [2023-11-29 03:17:19,206 INFO L226 Difference]: Without dead ends: 964 [2023-11-29 03:17:19,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:17:19,220 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1885 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 4697 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 5434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 4697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:19,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 2316 Invalid, 5434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [737 Valid, 4697 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-29 03:17:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-11-29 03:17:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 512. [2023-11-29 03:17:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 402 states have (on average 1.7313432835820894) internal successors, (696), 421 states have internal predecessors, (696), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-29 03:17:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 869 transitions. [2023-11-29 03:17:19,445 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 869 transitions. Word has length 87 [2023-11-29 03:17:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:19,445 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 869 transitions. [2023-11-29 03:17:19,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 03:17:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 869 transitions. [2023-11-29 03:17:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 03:17:19,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:19,455 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] [2023-11-29 03:17:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:17:19,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:19,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:19,456 INFO L85 PathProgramCache]: Analyzing trace with hash -250599924, now seen corresponding path program 1 times [2023-11-29 03:17:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:19,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600948799] [2023-11-29 03:17:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:19,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:17:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 03:17:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:17:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 03:17:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:17:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 03:17:20,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:20,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600948799] [2023-11-29 03:17:20,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600948799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:20,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:20,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:17:20,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629870117] [2023-11-29 03:17:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:20,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:17:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:17:20,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:17:20,297 INFO L87 Difference]: Start difference. First operand 512 states and 869 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 03:17:28,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:28,118 INFO L93 Difference]: Finished difference Result 1314 states and 2287 transitions. [2023-11-29 03:17:28,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:17:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2023-11-29 03:17:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:28,126 INFO L225 Difference]: With dead ends: 1314 [2023-11-29 03:17:28,126 INFO L226 Difference]: Without dead ends: 805 [2023-11-29 03:17:28,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:17:28,131 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1827 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 5983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:28,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 2932 Invalid, 5983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [497 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 03:17:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-29 03:17:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 516. [2023-11-29 03:17:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 405 states have (on average 1.7234567901234568) internal successors, (698), 424 states have internal predecessors, (698), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (86), 83 states have call predecessors, (86), 84 states have call successors, (86) [2023-11-29 03:17:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 873 transitions. [2023-11-29 03:17:28,244 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 873 transitions. Word has length 93 [2023-11-29 03:17:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:28,244 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 873 transitions. [2023-11-29 03:17:28,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 03:17:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 873 transitions. [2023-11-29 03:17:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:17:28,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:28,249 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] [2023-11-29 03:17:28,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:17:28,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:28,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:28,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1960856910, now seen corresponding path program 1 times [2023-11-29 03:17:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:28,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482498668] [2023-11-29 03:17:28,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:28,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:17:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 03:17:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:17:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:17:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:29,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482498668] [2023-11-29 03:17:29,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482498668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:29,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819723486] [2023-11-29 03:17:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:29,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:29,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:29,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:29,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:17:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:29,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:17:29,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:17:29,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819723486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:29,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:29,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-11-29 03:17:29,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975840529] [2023-11-29 03:17:29,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:17:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:17:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:17:29,497 INFO L87 Difference]: Start difference. First operand 516 states and 873 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 03:17:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:29,876 INFO L93 Difference]: Finished difference Result 1350 states and 2306 transitions. [2023-11-29 03:17:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:17:29,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2023-11-29 03:17:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:29,886 INFO L225 Difference]: With dead ends: 1350 [2023-11-29 03:17:29,886 INFO L226 Difference]: Without dead ends: 912 [2023-11-29 03:17:29,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:17:29,891 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 794 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:29,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1570 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-11-29 03:17:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 897. [2023-11-29 03:17:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 701 states have (on average 1.6947218259629102) internal successors, (1188), 734 states have internal predecessors, (1188), 158 states have call successors, (158), 36 states have call predecessors, (158), 37 states have return successors, (170), 152 states have call predecessors, (170), 153 states have call successors, (170) [2023-11-29 03:17:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1516 transitions. [2023-11-29 03:17:30,145 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1516 transitions. Word has length 99 [2023-11-29 03:17:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:30,146 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1516 transitions. [2023-11-29 03:17:30,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 03:17:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1516 transitions. [2023-11-29 03:17:30,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 03:17:30,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:30,150 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] [2023-11-29 03:17:30,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:17:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:30,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:30,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1728477197, now seen corresponding path program 1 times [2023-11-29 03:17:30,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:30,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560384277] [2023-11-29 03:17:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:17:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 03:17:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:17:31,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560384277] [2023-11-29 03:17:31,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560384277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790620547] [2023-11-29 03:17:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:31,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:31,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:31,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:31,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:17:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:31,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:17:31,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:17:31,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790620547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:31,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-11-29 03:17:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45366456] [2023-11-29 03:17:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:17:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:17:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:17:31,623 INFO L87 Difference]: Start difference. First operand 897 states and 1516 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:32,232 INFO L93 Difference]: Finished difference Result 2455 states and 4191 transitions. [2023-11-29 03:17:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:17:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2023-11-29 03:17:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:32,248 INFO L225 Difference]: With dead ends: 2455 [2023-11-29 03:17:32,248 INFO L226 Difference]: Without dead ends: 1636 [2023-11-29 03:17:32,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:17:32,255 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 854 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:32,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1406 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-11-29 03:17:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1621. [2023-11-29 03:17:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1621 states, 1260 states have (on average 1.6841269841269841) internal successors, (2122), 1320 states have internal predecessors, (2122), 293 states have call successors, (293), 66 states have call predecessors, (293), 67 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 2758 transitions. [2023-11-29 03:17:32,607 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 2758 transitions. Word has length 103 [2023-11-29 03:17:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:32,608 INFO L495 AbstractCegarLoop]: Abstraction has 1621 states and 2758 transitions. [2023-11-29 03:17:32,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 2758 transitions. [2023-11-29 03:17:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 03:17:32,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:32,612 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] [2023-11-29 03:17:32,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:17:32,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:32,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:32,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -71510501, now seen corresponding path program 1 times [2023-11-29 03:17:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503602273] [2023-11-29 03:17:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:17:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 03:17:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:17:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503602273] [2023-11-29 03:17:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503602273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648743914] [2023-11-29 03:17:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:33,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:33,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:33,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:17:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:34,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:34,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:17:34,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648743914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:34,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 03:17:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813802728] [2023-11-29 03:17:34,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:17:34,151 INFO L87 Difference]: Start difference. First operand 1621 states and 2758 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:34,546 INFO L93 Difference]: Finished difference Result 3246 states and 5523 transitions. [2023-11-29 03:17:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:34,547 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-11-29 03:17:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:34,557 INFO L225 Difference]: With dead ends: 3246 [2023-11-29 03:17:34,557 INFO L226 Difference]: Without dead ends: 1630 [2023-11-29 03:17:34,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:17:34,566 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 20 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:34,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2522 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-11-29 03:17:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-11-29 03:17:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6829652996845426) internal successors, (2134), 1328 states have internal predecessors, (2134), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2770 transitions. [2023-11-29 03:17:34,920 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2770 transitions. Word has length 106 [2023-11-29 03:17:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:34,920 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2770 transitions. [2023-11-29 03:17:34,920 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2770 transitions. [2023-11-29 03:17:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 03:17:34,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:34,924 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] [2023-11-29 03:17:34,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:17:35,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:35,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:35,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:35,125 INFO L85 PathProgramCache]: Analyzing trace with hash 28025428, now seen corresponding path program 1 times [2023-11-29 03:17:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996927092] [2023-11-29 03:17:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:35,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:17:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:17:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:17:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:17:36,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:36,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996927092] [2023-11-29 03:17:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996927092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:36,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786729399] [2023-11-29 03:17:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:36,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:36,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:36,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:36,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:17:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:36,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:36,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:17:36,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:36,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786729399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:36,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:36,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 03:17:36,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334730862] [2023-11-29 03:17:36,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:36,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:36,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:17:36,548 INFO L87 Difference]: Start difference. First operand 1630 states and 2770 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:37,004 INFO L93 Difference]: Finished difference Result 3248 states and 5524 transitions. [2023-11-29 03:17:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:37,005 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-11-29 03:17:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:37,015 INFO L225 Difference]: With dead ends: 3248 [2023-11-29 03:17:37,016 INFO L226 Difference]: Without dead ends: 1630 [2023-11-29 03:17:37,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:17:37,026 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 18 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:37,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2522 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:37,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-11-29 03:17:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-11-29 03:17:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6821766561514195) internal successors, (2133), 1328 states have internal predecessors, (2133), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2769 transitions. [2023-11-29 03:17:37,466 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2769 transitions. Word has length 107 [2023-11-29 03:17:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:37,467 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2769 transitions. [2023-11-29 03:17:37,467 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2769 transitions. [2023-11-29 03:17:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 03:17:37,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:37,471 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] [2023-11-29 03:17:37,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:17:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:37,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:37,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash -699167305, now seen corresponding path program 1 times [2023-11-29 03:17:37,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:37,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613319868] [2023-11-29 03:17:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:37,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:17:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:37,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:17:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:17:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:17:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:38,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613319868] [2023-11-29 03:17:38,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613319868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:38,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659930961] [2023-11-29 03:17:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:38,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:38,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:38,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:38,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:17:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:38,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:38,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:17:38,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659930961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:38,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-29 03:17:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989758337] [2023-11-29 03:17:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:17:38,921 INFO L87 Difference]: Start difference. First operand 1630 states and 2769 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:39,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:39,337 INFO L93 Difference]: Finished difference Result 3248 states and 5523 transitions. [2023-11-29 03:17:39,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:39,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-11-29 03:17:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:39,349 INFO L225 Difference]: With dead ends: 3248 [2023-11-29 03:17:39,349 INFO L226 Difference]: Without dead ends: 1630 [2023-11-29 03:17:39,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:17:39,356 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 17 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:39,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2522 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-11-29 03:17:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-11-29 03:17:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6813880126182965) internal successors, (2132), 1328 states have internal predecessors, (2132), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2768 transitions. [2023-11-29 03:17:39,656 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2768 transitions. Word has length 108 [2023-11-29 03:17:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:39,656 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2768 transitions. [2023-11-29 03:17:39,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2768 transitions. [2023-11-29 03:17:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 03:17:39,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:39,660 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] [2023-11-29 03:17:39,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:17:39,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:17:39,861 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:39,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1285144784, now seen corresponding path program 1 times [2023-11-29 03:17:39,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:39,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538113902] [2023-11-29 03:17:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:39,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 03:17:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 03:17:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:40,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:40,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538113902] [2023-11-29 03:17:40,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538113902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:40,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124591640] [2023-11-29 03:17:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:40,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:40,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:40,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:17:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:40,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:40,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:40,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124591640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:40,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:40,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 03:17:40,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447944052] [2023-11-29 03:17:40,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:40,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:40,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:17:40,972 INFO L87 Difference]: Start difference. First operand 1630 states and 2768 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:41,359 INFO L93 Difference]: Finished difference Result 3258 states and 5543 transitions. [2023-11-29 03:17:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:41,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-11-29 03:17:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:41,372 INFO L225 Difference]: With dead ends: 3258 [2023-11-29 03:17:41,372 INFO L226 Difference]: Without dead ends: 1630 [2023-11-29 03:17:41,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:41,381 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 133 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:41,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2341 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-11-29 03:17:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-11-29 03:17:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6774447949526814) internal successors, (2127), 1328 states have internal predecessors, (2127), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2763 transitions. [2023-11-29 03:17:41,707 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2763 transitions. Word has length 109 [2023-11-29 03:17:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:41,707 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2763 transitions. [2023-11-29 03:17:41,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2763 transitions. [2023-11-29 03:17:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 03:17:41,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:41,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:17:41,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:17:41,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:41,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:41,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1426485536, now seen corresponding path program 1 times [2023-11-29 03:17:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:41,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301820343] [2023-11-29 03:17:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:17:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 03:17:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:42,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301820343] [2023-11-29 03:17:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301820343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982514707] [2023-11-29 03:17:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:42,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:42,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:42,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:42,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:17:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:43,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:43,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:43,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:43,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982514707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:43,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:43,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 03:17:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083601347] [2023-11-29 03:17:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:43,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:43,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:17:43,042 INFO L87 Difference]: Start difference. First operand 1630 states and 2763 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:43,420 INFO L93 Difference]: Finished difference Result 3258 states and 5533 transitions. [2023-11-29 03:17:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:17:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-11-29 03:17:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:43,431 INFO L225 Difference]: With dead ends: 3258 [2023-11-29 03:17:43,431 INFO L226 Difference]: Without dead ends: 1630 [2023-11-29 03:17:43,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:43,439 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 127 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:43,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2341 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:43,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2023-11-29 03:17:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2023-11-29 03:17:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1268 states have (on average 1.6735015772870663) internal successors, (2122), 1328 states have internal predecessors, (2122), 293 states have call successors, (293), 67 states have call predecessors, (293), 68 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2758 transitions. [2023-11-29 03:17:43,791 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2758 transitions. Word has length 111 [2023-11-29 03:17:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:43,791 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2758 transitions. [2023-11-29 03:17:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2758 transitions. [2023-11-29 03:17:43,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 03:17:43,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:43,793 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] [2023-11-29 03:17:43,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:17:43,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 03:17:43,994 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:43,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash 363967290, now seen corresponding path program 1 times [2023-11-29 03:17:43,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:43,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191008851] [2023-11-29 03:17:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:43,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 03:17:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:17:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:44,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191008851] [2023-11-29 03:17:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191008851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452184341] [2023-11-29 03:17:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:44,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:44,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:44,659 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:44,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:17:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:44,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:44,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:44,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:44,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452184341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:44,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 03:17:44,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674928245] [2023-11-29 03:17:44,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:44,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:44,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:17:44,969 INFO L87 Difference]: Start difference. First operand 1630 states and 2758 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:45,403 INFO L93 Difference]: Finished difference Result 3294 states and 5582 transitions. [2023-11-29 03:17:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:45,403 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-11-29 03:17:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:45,415 INFO L225 Difference]: With dead ends: 3294 [2023-11-29 03:17:45,415 INFO L226 Difference]: Without dead ends: 1680 [2023-11-29 03:17:45,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:45,421 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 177 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:45,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2351 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:45,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-11-29 03:17:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1680. [2023-11-29 03:17:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1317 states have (on average 1.6750189825360668) internal successors, (2206), 1377 states have internal predecessors, (2206), 293 states have call successors, (293), 68 states have call predecessors, (293), 69 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2842 transitions. [2023-11-29 03:17:45,745 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2842 transitions. Word has length 113 [2023-11-29 03:17:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:45,745 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2842 transitions. [2023-11-29 03:17:45,745 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2842 transitions. [2023-11-29 03:17:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 03:17:45,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:45,749 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] [2023-11-29 03:17:45,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:17:45,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:17:45,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:45,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1280678686, now seen corresponding path program 1 times [2023-11-29 03:17:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407447601] [2023-11-29 03:17:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:17:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:46,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407447601] [2023-11-29 03:17:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407447601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069113945] [2023-11-29 03:17:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:46,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:46,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:46,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:46,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:17:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:46,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:46,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:46,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:46,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069113945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:46,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:46,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 03:17:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122158570] [2023-11-29 03:17:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:46,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:46,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:17:46,936 INFO L87 Difference]: Start difference. First operand 1680 states and 2842 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:47,324 INFO L93 Difference]: Finished difference Result 3308 states and 5605 transitions. [2023-11-29 03:17:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:47,324 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-11-29 03:17:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:47,333 INFO L225 Difference]: With dead ends: 3308 [2023-11-29 03:17:47,333 INFO L226 Difference]: Without dead ends: 1680 [2023-11-29 03:17:47,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:47,339 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 171 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:47,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2351 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-11-29 03:17:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1680. [2023-11-29 03:17:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1317 states have (on average 1.6712224753227032) internal successors, (2201), 1377 states have internal predecessors, (2201), 293 states have call successors, (293), 68 states have call predecessors, (293), 69 states have return successors, (343), 285 states have call predecessors, (343), 288 states have call successors, (343) [2023-11-29 03:17:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2837 transitions. [2023-11-29 03:17:47,745 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2837 transitions. Word has length 114 [2023-11-29 03:17:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:47,745 INFO L495 AbstractCegarLoop]: Abstraction has 1680 states and 2837 transitions. [2023-11-29 03:17:47,745 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2837 transitions. [2023-11-29 03:17:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 03:17:47,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:47,747 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] [2023-11-29 03:17:47,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:17:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:47,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:47,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -757873341, now seen corresponding path program 1 times [2023-11-29 03:17:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:47,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531501418] [2023-11-29 03:17:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:17:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:17:48,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531501418] [2023-11-29 03:17:48,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531501418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064470058] [2023-11-29 03:17:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:48,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:48,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:48,622 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:48,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:17:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:48,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:17:48,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:49,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:49,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064470058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:49,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:49,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-29 03:17:49,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742445462] [2023-11-29 03:17:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:49,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:17:49,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:17:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:17:49,029 INFO L87 Difference]: Start difference. First operand 1680 states and 2837 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:49,497 INFO L93 Difference]: Finished difference Result 3330 states and 5634 transitions. [2023-11-29 03:17:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:17:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2023-11-29 03:17:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:49,507 INFO L225 Difference]: With dead ends: 3330 [2023-11-29 03:17:49,507 INFO L226 Difference]: Without dead ends: 1716 [2023-11-29 03:17:49,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:17:49,513 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 171 mSDsluCounter, 4846 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5670 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:49,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5670 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-11-29 03:17:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1698. [2023-11-29 03:17:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1332 states have (on average 1.6711711711711712) internal successors, (2226), 1394 states have internal predecessors, (2226), 294 states have call successors, (294), 68 states have call predecessors, (294), 71 states have return successors, (346), 286 states have call predecessors, (346), 289 states have call successors, (346) [2023-11-29 03:17:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2866 transitions. [2023-11-29 03:17:49,860 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2866 transitions. Word has length 114 [2023-11-29 03:17:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:49,861 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 2866 transitions. [2023-11-29 03:17:49,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:49,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2866 transitions. [2023-11-29 03:17:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 03:17:49,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:49,863 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] [2023-11-29 03:17:49,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 03:17:50,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:50,063 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:50,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash 372913284, now seen corresponding path program 1 times [2023-11-29 03:17:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541399241] [2023-11-29 03:17:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:17:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:17:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541399241] [2023-11-29 03:17:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541399241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835257986] [2023-11-29 03:17:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:50,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:50,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:50,647 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:50,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:17:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:50,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:17:50,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:50,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835257986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:50,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 03:17:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312095879] [2023-11-29 03:17:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:50,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:17:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:17:50,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:17:50,984 INFO L87 Difference]: Start difference. First operand 1698 states and 2866 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:51,542 INFO L93 Difference]: Finished difference Result 3268 states and 5534 transitions. [2023-11-29 03:17:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:17:51,543 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2023-11-29 03:17:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:51,552 INFO L225 Difference]: With dead ends: 3268 [2023-11-29 03:17:51,552 INFO L226 Difference]: Without dead ends: 1720 [2023-11-29 03:17:51,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:51,558 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 132 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 4917 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:51,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 4917 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-11-29 03:17:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1716. [2023-11-29 03:17:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6711210096510765) internal successors, (2251), 1411 states have internal predecessors, (2251), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-11-29 03:17:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2895 transitions. [2023-11-29 03:17:51,842 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2895 transitions. Word has length 114 [2023-11-29 03:17:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:51,842 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2895 transitions. [2023-11-29 03:17:51,843 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2895 transitions. [2023-11-29 03:17:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 03:17:51,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:51,845 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] [2023-11-29 03:17:51,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:17:52,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:52,045 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:52,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:52,046 INFO L85 PathProgramCache]: Analyzing trace with hash -705472001, now seen corresponding path program 1 times [2023-11-29 03:17:52,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:52,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887765454] [2023-11-29 03:17:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:52,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 03:17:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:17:52,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887765454] [2023-11-29 03:17:52,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887765454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149885028] [2023-11-29 03:17:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:52,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:52,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:52,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:52,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:17:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:52,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:17:52,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:52,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149885028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:52,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:52,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 03:17:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306074148] [2023-11-29 03:17:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:17:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:17:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:17:52,999 INFO L87 Difference]: Start difference. First operand 1716 states and 2895 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:53,395 INFO L93 Difference]: Finished difference Result 3296 states and 5583 transitions. [2023-11-29 03:17:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:17:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2023-11-29 03:17:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:53,405 INFO L225 Difference]: With dead ends: 3296 [2023-11-29 03:17:53,405 INFO L226 Difference]: Without dead ends: 1748 [2023-11-29 03:17:53,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:53,409 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 141 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 4907 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:53,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 4907 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2023-11-29 03:17:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1716. [2023-11-29 03:17:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6711210096510765) internal successors, (2251), 1411 states have internal predecessors, (2251), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-11-29 03:17:53,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2895 transitions. [2023-11-29 03:17:53,772 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2895 transitions. Word has length 115 [2023-11-29 03:17:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:53,772 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2895 transitions. [2023-11-29 03:17:53,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2895 transitions. [2023-11-29 03:17:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 03:17:53,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:53,775 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] [2023-11-29 03:17:53,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:17:53,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:53,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:53,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:53,976 INFO L85 PathProgramCache]: Analyzing trace with hash 814552703, now seen corresponding path program 1 times [2023-11-29 03:17:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:53,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802622411] [2023-11-29 03:17:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 03:17:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:17:54,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:54,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802622411] [2023-11-29 03:17:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802622411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71201071] [2023-11-29 03:17:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:54,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:54,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:54,518 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:54,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:17:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:54,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:17:54,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:54,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71201071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-29 03:17:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682630940] [2023-11-29 03:17:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:17:54,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:17:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:54,912 INFO L87 Difference]: Start difference. First operand 1716 states and 2895 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:55,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:55,384 INFO L93 Difference]: Finished difference Result 3282 states and 5558 transitions. [2023-11-29 03:17:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:17:55,385 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2023-11-29 03:17:55,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:55,395 INFO L225 Difference]: With dead ends: 3282 [2023-11-29 03:17:55,395 INFO L226 Difference]: Without dead ends: 1734 [2023-11-29 03:17:55,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:17:55,398 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 171 mSDsluCounter, 4852 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 5678 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:55,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 5678 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-11-29 03:17:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1716. [2023-11-29 03:17:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6711210096510765) internal successors, (2251), 1411 states have internal predecessors, (2251), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-11-29 03:17:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2895 transitions. [2023-11-29 03:17:55,700 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2895 transitions. Word has length 115 [2023-11-29 03:17:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:55,701 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2895 transitions. [2023-11-29 03:17:55,701 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2895 transitions. [2023-11-29 03:17:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 03:17:55,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:55,703 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] [2023-11-29 03:17:55,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 03:17:55,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:55,903 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:55,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash 286205203, now seen corresponding path program 1 times [2023-11-29 03:17:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:55,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254869274] [2023-11-29 03:17:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:55,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:17:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 03:17:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:17:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:56,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254869274] [2023-11-29 03:17:56,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254869274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:56,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863040200] [2023-11-29 03:17:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:56,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:56,439 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:56,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:17:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:56,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:17:56,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:17:56,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:56,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863040200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:56,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 03:17:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063790462] [2023-11-29 03:17:56,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:56,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:17:56,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:56,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:17:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:17:56,704 INFO L87 Difference]: Start difference. First operand 1716 states and 2895 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:57,057 INFO L93 Difference]: Finished difference Result 3334 states and 5643 transitions. [2023-11-29 03:17:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:17:57,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2023-11-29 03:17:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:57,066 INFO L225 Difference]: With dead ends: 3334 [2023-11-29 03:17:57,066 INFO L226 Difference]: Without dead ends: 1716 [2023-11-29 03:17:57,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:17:57,070 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 23 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:57,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2491 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:17:57,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-11-29 03:17:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1716. [2023-11-29 03:17:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6681514476614698) internal successors, (2247), 1411 states have internal predecessors, (2247), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-11-29 03:17:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2891 transitions. [2023-11-29 03:17:57,477 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2891 transitions. Word has length 115 [2023-11-29 03:17:57,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:57,477 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2891 transitions. [2023-11-29 03:17:57,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:17:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2891 transitions. [2023-11-29 03:17:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 03:17:57,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:57,481 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] [2023-11-29 03:17:57,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:17:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:57,681 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:57,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash 762694396, now seen corresponding path program 1 times [2023-11-29 03:17:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427511838] [2023-11-29 03:17:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:57,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:17:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:17:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:17:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:17:58,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427511838] [2023-11-29 03:17:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427511838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179370010] [2023-11-29 03:17:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:58,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:58,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:58,218 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:58,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:17:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:58,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:17:58,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:17:58,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179370010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:17:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-29 03:17:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139154955] [2023-11-29 03:17:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:58,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:17:58,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:17:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:58,532 INFO L87 Difference]: Start difference. First operand 1716 states and 2891 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:58,944 INFO L93 Difference]: Finished difference Result 3282 states and 5555 transitions. [2023-11-29 03:17:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:17:58,944 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2023-11-29 03:17:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:58,956 INFO L225 Difference]: With dead ends: 3282 [2023-11-29 03:17:58,956 INFO L226 Difference]: Without dead ends: 1734 [2023-11-29 03:17:58,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:17:58,961 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 179 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:58,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 5634 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:17:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-11-29 03:17:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1716. [2023-11-29 03:17:59,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1347 states have (on average 1.6681514476614698) internal successors, (2247), 1411 states have internal predecessors, (2247), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-11-29 03:17:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2891 transitions. [2023-11-29 03:17:59,363 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2891 transitions. Word has length 116 [2023-11-29 03:17:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:59,363 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2891 transitions. [2023-11-29 03:17:59,363 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, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:17:59,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2891 transitions. [2023-11-29 03:17:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 03:17:59,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:59,366 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] [2023-11-29 03:17:59,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:17:59,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:17:59,566 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:59,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1382088228, now seen corresponding path program 1 times [2023-11-29 03:17:59,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:59,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944676971] [2023-11-29 03:17:59,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:59,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:17:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:17:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:17:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:17:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:17:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 03:18:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:18:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 03:18:00,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944676971] [2023-11-29 03:18:00,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944676971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50088425] [2023-11-29 03:18:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:00,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:00,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:00,198 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:00,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:18:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:18:00,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:18:00,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50088425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 03:18:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876762779] [2023-11-29 03:18:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:00,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:18:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:18:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:18:00,499 INFO L87 Difference]: Start difference. First operand 1716 states and 2891 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:18:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:00,849 INFO L93 Difference]: Finished difference Result 3380 states and 5713 transitions. [2023-11-29 03:18:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:18:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2023-11-29 03:18:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:00,857 INFO L225 Difference]: With dead ends: 3380 [2023-11-29 03:18:00,857 INFO L226 Difference]: Without dead ends: 1744 [2023-11-29 03:18:00,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:18:00,861 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 14 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:00,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2470 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:18:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2023-11-29 03:18:01,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1740. [2023-11-29 03:18:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1371 states have (on average 1.6593727206418674) internal successors, (2275), 1435 states have internal predecessors, (2275), 295 states have call successors, (295), 68 states have call predecessors, (295), 73 states have return successors, (349), 287 states have call predecessors, (349), 290 states have call successors, (349) [2023-11-29 03:18:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2919 transitions. [2023-11-29 03:18:01,150 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2919 transitions. Word has length 117 [2023-11-29 03:18:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:01,150 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2919 transitions. [2023-11-29 03:18:01,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:18:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2919 transitions. [2023-11-29 03:18:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 03:18:01,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:01,152 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] [2023-11-29 03:18:01,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:18:01,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:18:01,353 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:01,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash 132298446, now seen corresponding path program 1 times [2023-11-29 03:18:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:01,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237212620] [2023-11-29 03:18:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:18:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 03:18:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:18:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:18:01,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237212620] [2023-11-29 03:18:01,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237212620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244257674] [2023-11-29 03:18:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:01,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:01,980 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:01,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:18:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:02,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:18:02,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 03:18:02,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:02,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244257674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:02,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:02,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2023-11-29 03:18:02,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241809904] [2023-11-29 03:18:02,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:02,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:18:02,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:02,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:18:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:18:02,464 INFO L87 Difference]: Start difference. First operand 1740 states and 2919 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 03:18:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:05,914 INFO L93 Difference]: Finished difference Result 5428 states and 9293 transitions. [2023-11-29 03:18:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:18:05,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2023-11-29 03:18:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:05,946 INFO L225 Difference]: With dead ends: 5428 [2023-11-29 03:18:05,946 INFO L226 Difference]: Without dead ends: 3885 [2023-11-29 03:18:05,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:18:05,950 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 2805 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 5246 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 5246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:05,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2927 Valid, 3922 Invalid, 5833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 5246 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 03:18:05,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2023-11-29 03:18:06,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3846. [2023-11-29 03:18:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 2939 states have (on average 1.6509016672337529) internal successors, (4852), 3086 states have internal predecessors, (4852), 745 states have call successors, (745), 132 states have call predecessors, (745), 161 states have return successors, (948), 749 states have call predecessors, (948), 740 states have call successors, (948) [2023-11-29 03:18:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 6545 transitions. [2023-11-29 03:18:06,696 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 6545 transitions. Word has length 117 [2023-11-29 03:18:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:06,697 INFO L495 AbstractCegarLoop]: Abstraction has 3846 states and 6545 transitions. [2023-11-29 03:18:06,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 03:18:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 6545 transitions. [2023-11-29 03:18:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 03:18:06,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:06,700 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] [2023-11-29 03:18:06,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 03:18:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:06,901 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:06,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash 303636893, now seen corresponding path program 1 times [2023-11-29 03:18:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:06,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736623018] [2023-11-29 03:18:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:18:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 03:18:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:18:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:18:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:18:07,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736623018] [2023-11-29 03:18:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736623018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305468227] [2023-11-29 03:18:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:07,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:07,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:07,478 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:07,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:18:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:07,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:18:07,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:18:07,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305468227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:07,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 03:18:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164993542] [2023-11-29 03:18:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:07,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:18:07,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:07,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:18:07,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:18:07,808 INFO L87 Difference]: Start difference. First operand 3846 states and 6545 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:18:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:09,675 INFO L93 Difference]: Finished difference Result 10731 states and 18586 transitions. [2023-11-29 03:18:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:18:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2023-11-29 03:18:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:09,704 INFO L225 Difference]: With dead ends: 10731 [2023-11-29 03:18:09,704 INFO L226 Difference]: Without dead ends: 7176 [2023-11-29 03:18:09,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:18:09,714 INFO L413 NwaCegarLoop]: 1340 mSDtfsCounter, 692 mSDsluCounter, 3323 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 4663 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:09,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 4663 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:18:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7176 states. [2023-11-29 03:18:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7176 to 7145. [2023-11-29 03:18:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 5402 states have (on average 1.6569788967049242) internal successors, (8951), 5680 states have internal predecessors, (8951), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 313 states have return successors, (1776), 1438 states have call predecessors, (1776), 1424 states have call successors, (1776) [2023-11-29 03:18:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 12156 transitions. [2023-11-29 03:18:11,050 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 12156 transitions. Word has length 118 [2023-11-29 03:18:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:11,051 INFO L495 AbstractCegarLoop]: Abstraction has 7145 states and 12156 transitions. [2023-11-29 03:18:11,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:18:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 12156 transitions. [2023-11-29 03:18:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 03:18:11,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:11,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:11,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:18:11,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:11,257 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:11,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1518612544, now seen corresponding path program 1 times [2023-11-29 03:18:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784800430] [2023-11-29 03:18:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:18:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:11,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:18:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 03:18:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:12,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784800430] [2023-11-29 03:18:12,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784800430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:12,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216412160] [2023-11-29 03:18:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:12,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:12,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:12,011 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:12,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:18:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:12,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:18:12,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:18:12,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216412160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:12,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:12,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-11-29 03:18:12,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620117369] [2023-11-29 03:18:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:12,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:18:12,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:18:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:18:12,344 INFO L87 Difference]: Start difference. First operand 7145 states and 12156 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:18:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:13,745 INFO L93 Difference]: Finished difference Result 14142 states and 24107 transitions. [2023-11-29 03:18:13,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:18:13,745 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-11-29 03:18:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:13,776 INFO L225 Difference]: With dead ends: 14142 [2023-11-29 03:18:13,776 INFO L226 Difference]: Without dead ends: 7187 [2023-11-29 03:18:13,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:18:13,793 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 14 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:13,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2469 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:18:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2023-11-29 03:18:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 7163. [2023-11-29 03:18:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7163 states, 5420 states have (on average 1.657011070110701) internal successors, (8981), 5698 states have internal predecessors, (8981), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 313 states have return successors, (1776), 1438 states have call predecessors, (1776), 1424 states have call successors, (1776) [2023-11-29 03:18:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 12186 transitions. [2023-11-29 03:18:15,436 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 12186 transitions. Word has length 120 [2023-11-29 03:18:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:15,436 INFO L495 AbstractCegarLoop]: Abstraction has 7163 states and 12186 transitions. [2023-11-29 03:18:15,436 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 03:18:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 12186 transitions. [2023-11-29 03:18:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 03:18:15,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:15,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:15,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:18:15,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:15,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:15,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 968611350, now seen corresponding path program 1 times [2023-11-29 03:18:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32256751] [2023-11-29 03:18:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:15,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:18:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:18:16,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32256751] [2023-11-29 03:18:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32256751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794258308] [2023-11-29 03:18:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:16,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:16,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:16,296 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:16,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:18:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:16,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:18:16,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:18:16,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:16,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794258308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:16,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:16,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2023-11-29 03:18:16,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074916179] [2023-11-29 03:18:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:16,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:18:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:18:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:18:16,670 INFO L87 Difference]: Start difference. First operand 7163 states and 12186 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:18:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:18,161 INFO L93 Difference]: Finished difference Result 14077 states and 23995 transitions. [2023-11-29 03:18:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:18:18,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-11-29 03:18:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:18,200 INFO L225 Difference]: With dead ends: 14077 [2023-11-29 03:18:18,200 INFO L226 Difference]: Without dead ends: 7226 [2023-11-29 03:18:18,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:18:18,224 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 147 mSDsluCounter, 4834 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:18,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 5654 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:18:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2023-11-29 03:18:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 7165. [2023-11-29 03:18:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7165 states, 5421 states have (on average 1.6567054049068437) internal successors, (8981), 5700 states have internal predecessors, (8981), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 314 states have return successors, (1777), 1438 states have call predecessors, (1777), 1424 states have call successors, (1777) [2023-11-29 03:18:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 12187 transitions. [2023-11-29 03:18:19,677 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 12187 transitions. Word has length 121 [2023-11-29 03:18:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:19,678 INFO L495 AbstractCegarLoop]: Abstraction has 7165 states and 12187 transitions. [2023-11-29 03:18:19,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:18:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 12187 transitions. [2023-11-29 03:18:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 03:18:19,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:19,685 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] [2023-11-29 03:18:19,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 03:18:19,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:18:19,886 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:19,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1455580972, now seen corresponding path program 1 times [2023-11-29 03:18:19,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:19,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618697033] [2023-11-29 03:18:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:19,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:18:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:18:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618697033] [2023-11-29 03:18:20,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618697033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341359878] [2023-11-29 03:18:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:20,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:20,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:20,696 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:20,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:18:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:21,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:18:21,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 03:18:21,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:21,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341359878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:21,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:21,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2023-11-29 03:18:21,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293468980] [2023-11-29 03:18:21,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:21,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:18:21,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:18:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:18:21,073 INFO L87 Difference]: Start difference. First operand 7165 states and 12187 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:18:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:22,572 INFO L93 Difference]: Finished difference Result 12740 states and 21834 transitions. [2023-11-29 03:18:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:18:22,573 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), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2023-11-29 03:18:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:22,603 INFO L225 Difference]: With dead ends: 12740 [2023-11-29 03:18:22,603 INFO L226 Difference]: Without dead ends: 7165 [2023-11-29 03:18:22,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:18:22,617 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 326 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:22,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 2348 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:18:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2023-11-29 03:18:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 7165. [2023-11-29 03:18:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7165 states, 5421 states have (on average 1.6504334993543626) internal successors, (8947), 5700 states have internal predecessors, (8947), 1429 states have call successors, (1429), 268 states have call predecessors, (1429), 314 states have return successors, (1777), 1438 states have call predecessors, (1777), 1424 states have call successors, (1777) [2023-11-29 03:18:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 12153 transitions. [2023-11-29 03:18:24,041 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 12153 transitions. Word has length 121 [2023-11-29 03:18:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:24,041 INFO L495 AbstractCegarLoop]: Abstraction has 7165 states and 12153 transitions. [2023-11-29 03:18:24,041 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), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 03:18:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 12153 transitions. [2023-11-29 03:18:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 03:18:24,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:24,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:24,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 03:18:24,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:18:24,249 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:24,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1866591797, now seen corresponding path program 1 times [2023-11-29 03:18:24,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:24,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756542361] [2023-11-29 03:18:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:24,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:18:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:18:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:18:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:18:24,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756542361] [2023-11-29 03:18:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756542361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:24,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977142882] [2023-11-29 03:18:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:24,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:24,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:24,930 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:24,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:18:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:25,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:18:25,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 03:18:25,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977142882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:25,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:25,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-11-29 03:18:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366914593] [2023-11-29 03:18:25,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:18:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:25,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:18:25,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:18:25,374 INFO L87 Difference]: Start difference. First operand 7165 states and 12153 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 03:18:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:29,945 INFO L93 Difference]: Finished difference Result 17197 states and 29499 transitions. [2023-11-29 03:18:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:18:29,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2023-11-29 03:18:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:29,993 INFO L225 Difference]: With dead ends: 17197 [2023-11-29 03:18:29,993 INFO L226 Difference]: Without dead ends: 11798 [2023-11-29 03:18:30,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:18:30,011 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1923 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 3492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:30,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1716 Invalid, 3492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 03:18:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11798 states. [2023-11-29 03:18:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11798 to 11719. [2023-11-29 03:18:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11719 states, 8871 states have (on average 1.6466012850862362) internal successors, (14607), 9306 states have internal predecessors, (14607), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-11-29 03:18:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11719 states to 11719 states and 20055 transitions. [2023-11-29 03:18:32,287 INFO L78 Accepts]: Start accepts. Automaton has 11719 states and 20055 transitions. Word has length 124 [2023-11-29 03:18:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:32,287 INFO L495 AbstractCegarLoop]: Abstraction has 11719 states and 20055 transitions. [2023-11-29 03:18:32,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 03:18:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 11719 states and 20055 transitions. [2023-11-29 03:18:32,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 03:18:32,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:32,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:32,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 03:18:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:18:32,493 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:32,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 83708458, now seen corresponding path program 1 times [2023-11-29 03:18:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:32,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140948722] [2023-11-29 03:18:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:32,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:32,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:18:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:18:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:18:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:18:33,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:33,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140948722] [2023-11-29 03:18:33,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140948722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:33,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930291914] [2023-11-29 03:18:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:33,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:33,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:33,179 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:33,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 03:18:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:33,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:18:33,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 03:18:33,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:33,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930291914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:33,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:33,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2023-11-29 03:18:33,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176374802] [2023-11-29 03:18:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:33,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:18:33,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:18:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:18:33,564 INFO L87 Difference]: Start difference. First operand 11719 states and 20055 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 03:18:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:36,066 INFO L93 Difference]: Finished difference Result 12162 states and 20897 transitions. [2023-11-29 03:18:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:18:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 124 [2023-11-29 03:18:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:36,178 INFO L225 Difference]: With dead ends: 12162 [2023-11-29 03:18:36,178 INFO L226 Difference]: Without dead ends: 12145 [2023-11-29 03:18:36,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:18:36,182 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 854 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:36,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1479 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:18:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12145 states. [2023-11-29 03:18:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12145 to 11747. [2023-11-29 03:18:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11747 states, 8899 states have (on average 1.6445668052590179) internal successors, (14635), 9334 states have internal predecessors, (14635), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-11-29 03:18:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 20083 transitions. [2023-11-29 03:18:38,710 INFO L78 Accepts]: Start accepts. Automaton has 11747 states and 20083 transitions. Word has length 124 [2023-11-29 03:18:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:38,711 INFO L495 AbstractCegarLoop]: Abstraction has 11747 states and 20083 transitions. [2023-11-29 03:18:38,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 03:18:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11747 states and 20083 transitions. [2023-11-29 03:18:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-29 03:18:38,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:38,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:38,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 03:18:38,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:18:38,918 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:38,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1597820542, now seen corresponding path program 1 times [2023-11-29 03:18:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:38,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555394547] [2023-11-29 03:18:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:18:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:18:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:18:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:18:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:18:39,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555394547] [2023-11-29 03:18:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555394547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704532455] [2023-11-29 03:18:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:39,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:39,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:39,673 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:39,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:18:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:39,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:18:39,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 03:18:39,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:39,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704532455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:39,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:39,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-11-29 03:18:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069242815] [2023-11-29 03:18:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:18:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:39,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:18:39,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:18:39,975 INFO L87 Difference]: Start difference. First operand 11747 states and 20083 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 03:18:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:42,138 INFO L93 Difference]: Finished difference Result 11792 states and 20145 transitions. [2023-11-29 03:18:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:18:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 129 [2023-11-29 03:18:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:42,186 INFO L225 Difference]: With dead ends: 11792 [2023-11-29 03:18:42,186 INFO L226 Difference]: Without dead ends: 11775 [2023-11-29 03:18:42,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:18:42,194 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 34 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:42,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3295 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:18:42,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11775 states. [2023-11-29 03:18:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11775 to 11747. [2023-11-29 03:18:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11747 states, 8899 states have (on average 1.6405214068996516) internal successors, (14599), 9334 states have internal predecessors, (14599), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-11-29 03:18:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 20047 transitions. [2023-11-29 03:18:44,487 INFO L78 Accepts]: Start accepts. Automaton has 11747 states and 20047 transitions. Word has length 129 [2023-11-29 03:18:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:44,488 INFO L495 AbstractCegarLoop]: Abstraction has 11747 states and 20047 transitions. [2023-11-29 03:18:44,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 03:18:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 11747 states and 20047 transitions. [2023-11-29 03:18:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 03:18:44,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:44,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:44,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 03:18:44,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:18:44,696 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:44,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash 587537218, now seen corresponding path program 1 times [2023-11-29 03:18:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064135432] [2023-11-29 03:18:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:18:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:18:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:18:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:18:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 03:18:45,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:45,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064135432] [2023-11-29 03:18:45,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064135432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321839068] [2023-11-29 03:18:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:45,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:45,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:45,380 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:45,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 03:18:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:45,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:18:45,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:18:45,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:45,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321839068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:45,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:45,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 17 [2023-11-29 03:18:45,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691204673] [2023-11-29 03:18:45,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:45,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:18:45,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:18:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:18:45,706 INFO L87 Difference]: Start difference. First operand 11747 states and 20047 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 03:18:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:48,062 INFO L93 Difference]: Finished difference Result 23356 states and 39894 transitions. [2023-11-29 03:18:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:18:48,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2023-11-29 03:18:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:48,135 INFO L225 Difference]: With dead ends: 23356 [2023-11-29 03:18:48,135 INFO L226 Difference]: Without dead ends: 11822 [2023-11-29 03:18:48,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:18:48,176 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 165 mSDsluCounter, 3978 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:48,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 4798 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:18:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2023-11-29 03:18:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 11747. [2023-11-29 03:18:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11747 states, 8899 states have (on average 1.6405214068996516) internal successors, (14599), 9334 states have internal predecessors, (14599), 2327 states have call successors, (2327), 406 states have call predecessors, (2327), 520 states have return successors, (3121), 2354 states have call predecessors, (3121), 2322 states have call successors, (3121) [2023-11-29 03:18:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 20047 transitions. [2023-11-29 03:18:50,522 INFO L78 Accepts]: Start accepts. Automaton has 11747 states and 20047 transitions. Word has length 138 [2023-11-29 03:18:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:50,522 INFO L495 AbstractCegarLoop]: Abstraction has 11747 states and 20047 transitions. [2023-11-29 03:18:50,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 03:18:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 11747 states and 20047 transitions. [2023-11-29 03:18:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 03:18:50,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:50,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:50,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 03:18:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:18:50,729 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:50,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1360857617, now seen corresponding path program 1 times [2023-11-29 03:18:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986163501] [2023-11-29 03:18:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:18:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:50,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 03:18:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 03:18:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:18:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:18:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 03:18:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:18:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:18:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 03:18:51,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:51,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986163501] [2023-11-29 03:18:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986163501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:51,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134007901] [2023-11-29 03:18:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:51,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:51,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:51,277 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:51,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 03:18:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:51,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:18:51,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:18:51,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134007901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:51,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:51,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 03:18:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242783546] [2023-11-29 03:18:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:51,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:18:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:51,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:18:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:18:51,562 INFO L87 Difference]: Start difference. First operand 11747 states and 20047 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 03:18:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:54,138 INFO L93 Difference]: Finished difference Result 23365 states and 39905 transitions. [2023-11-29 03:18:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:18:54,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2023-11-29 03:18:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:54,185 INFO L225 Difference]: With dead ends: 23365 [2023-11-29 03:18:54,186 INFO L226 Difference]: Without dead ends: 11582 [2023-11-29 03:18:54,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:18:54,211 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 11 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:54,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2460 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:18:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11582 states. [2023-11-29 03:18:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11582 to 11582. [2023-11-29 03:18:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11582 states, 8749 states have (on average 1.6416733340953251) internal successors, (14363), 9178 states have internal predecessors, (14363), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-11-29 03:18:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11582 states to 11582 states and 19792 transitions. [2023-11-29 03:18:56,462 INFO L78 Accepts]: Start accepts. Automaton has 11582 states and 19792 transitions. Word has length 138 [2023-11-29 03:18:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:56,462 INFO L495 AbstractCegarLoop]: Abstraction has 11582 states and 19792 transitions. [2023-11-29 03:18:56,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 03:18:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 11582 states and 19792 transitions. [2023-11-29 03:18:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 03:18:56,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:56,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:18:56,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 03:18:56,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:18:56,667 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:56,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash -388585081, now seen corresponding path program 1 times [2023-11-29 03:18:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:56,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071937522] [2023-11-29 03:18:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:18:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:18:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:56,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:18:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:18:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 03:18:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:18:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:18:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:18:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:18:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:18:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:18:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:18:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:18:57,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:57,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071937522] [2023-11-29 03:18:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071937522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207499493] [2023-11-29 03:18:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:57,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:57,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:57,239 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:57,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 03:18:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:57,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:18:57,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:18:57,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:57,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207499493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:57,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:18:57,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 03:18:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597760760] [2023-11-29 03:18:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:57,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:18:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:18:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:18:57,553 INFO L87 Difference]: Start difference. First operand 11582 states and 19792 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 03:18:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:59,883 INFO L93 Difference]: Finished difference Result 23139 states and 39556 transitions. [2023-11-29 03:18:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:18:59,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2023-11-29 03:18:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:59,934 INFO L225 Difference]: With dead ends: 23139 [2023-11-29 03:18:59,934 INFO L226 Difference]: Without dead ends: 11582 [2023-11-29 03:18:59,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:18:59,963 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 174 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:59,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2295 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:18:59,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11582 states. [2023-11-29 03:19:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11582 to 11582. [2023-11-29 03:19:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11582 states, 8749 states have (on average 1.641559035318322) internal successors, (14362), 9178 states have internal predecessors, (14362), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-11-29 03:19:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11582 states to 11582 states and 19791 transitions. [2023-11-29 03:19:02,191 INFO L78 Accepts]: Start accepts. Automaton has 11582 states and 19791 transitions. Word has length 140 [2023-11-29 03:19:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:02,191 INFO L495 AbstractCegarLoop]: Abstraction has 11582 states and 19791 transitions. [2023-11-29 03:19:02,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 03:19:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 11582 states and 19791 transitions. [2023-11-29 03:19:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 03:19:02,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:02,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:19:02,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 03:19:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 03:19:02,396 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:02,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2096387969, now seen corresponding path program 1 times [2023-11-29 03:19:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:02,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670501077] [2023-11-29 03:19:02,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:19:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:02,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:19:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:19:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:02,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:19:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:19:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:19:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:19:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:19:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:19:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:19:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:19:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:19:03,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:03,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670501077] [2023-11-29 03:19:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670501077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:19:03,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:19:03,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:19:03,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730678405] [2023-11-29 03:19:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:19:03,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:19:03,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:19:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:19:03,031 INFO L87 Difference]: Start difference. First operand 11582 states and 19791 transitions. Second operand has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 03:19:13,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:13,520 INFO L93 Difference]: Finished difference Result 26841 states and 47851 transitions. [2023-11-29 03:19:13,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:19:13,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2023-11-29 03:19:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:13,590 INFO L225 Difference]: With dead ends: 26841 [2023-11-29 03:19:13,590 INFO L226 Difference]: Without dead ends: 15299 [2023-11-29 03:19:13,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:19:13,618 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1818 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 5196 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 5656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 5196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:13,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 2752 Invalid, 5656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [460 Valid, 5196 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 03:19:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15299 states. [2023-11-29 03:19:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15299 to 11586. [2023-11-29 03:19:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11586 states, 8753 states have (on average 1.641265851707986) internal successors, (14366), 9182 states have internal predecessors, (14366), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-11-29 03:19:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11586 states to 11586 states and 19795 transitions. [2023-11-29 03:19:16,215 INFO L78 Accepts]: Start accepts. Automaton has 11586 states and 19795 transitions. Word has length 141 [2023-11-29 03:19:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:16,216 INFO L495 AbstractCegarLoop]: Abstraction has 11586 states and 19795 transitions. [2023-11-29 03:19:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 03:19:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11586 states and 19795 transitions. [2023-11-29 03:19:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 03:19:16,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:16,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:19:16,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 03:19:16,221 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:16,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash -672990586, now seen corresponding path program 1 times [2023-11-29 03:19:16,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:16,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999583001] [2023-11-29 03:19:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:16,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:19:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:19:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:19:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:19:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:19:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:19:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:19:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:19:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:19:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:19:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:19:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 03:19:16,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:16,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999583001] [2023-11-29 03:19:16,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999583001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:19:16,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:19:16,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:19:16,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573600410] [2023-11-29 03:19:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:19:16,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:19:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:19:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:19:16,760 INFO L87 Difference]: Start difference. First operand 11586 states and 19795 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 03:19:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:26,057 INFO L93 Difference]: Finished difference Result 26725 states and 47661 transitions. [2023-11-29 03:19:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:19:26,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2023-11-29 03:19:26,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:26,135 INFO L225 Difference]: With dead ends: 26725 [2023-11-29 03:19:26,135 INFO L226 Difference]: Without dead ends: 15272 [2023-11-29 03:19:26,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:19:26,168 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1327 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:26,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1557 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 03:19:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2023-11-29 03:19:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 11588. [2023-11-29 03:19:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11588 states, 8755 states have (on average 1.6411193603655054) internal successors, (14368), 9184 states have internal predecessors, (14368), 2322 states have call successors, (2322), 403 states have call predecessors, (2322), 510 states have return successors, (3107), 2348 states have call predecessors, (3107), 2317 states have call successors, (3107) [2023-11-29 03:19:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11588 states to 11588 states and 19797 transitions. [2023-11-29 03:19:28,811 INFO L78 Accepts]: Start accepts. Automaton has 11588 states and 19797 transitions. Word has length 141 [2023-11-29 03:19:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:28,812 INFO L495 AbstractCegarLoop]: Abstraction has 11588 states and 19797 transitions. [2023-11-29 03:19:28,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 03:19:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand 11588 states and 19797 transitions. [2023-11-29 03:19:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 03:19:28,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:28,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:19:28,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 03:19:28,817 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:28,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2099754864, now seen corresponding path program 1 times [2023-11-29 03:19:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:28,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61482182] [2023-11-29 03:19:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:19:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:19:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:19:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:19:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:19:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:19:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:19:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:19:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:19:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:19:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:19:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 03:19:29,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:29,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61482182] [2023-11-29 03:19:29,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61482182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:19:29,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:19:29,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 03:19:29,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775118235] [2023-11-29 03:19:29,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:19:29,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:19:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:19:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:19:29,513 INFO L87 Difference]: Start difference. First operand 11588 states and 19797 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 03:19:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:54,394 INFO L93 Difference]: Finished difference Result 23898 states and 42741 transitions. [2023-11-29 03:19:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 03:19:54,394 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2023-11-29 03:19:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:54,452 INFO L225 Difference]: With dead ends: 23898 [2023-11-29 03:19:54,452 INFO L226 Difference]: Without dead ends: 13330 [2023-11-29 03:19:54,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=491, Invalid=2479, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 03:19:54,481 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 6273 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 7211 mSolverCounterSat, 2114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6358 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 9325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2114 IncrementalHoareTripleChecker+Valid, 7211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:54,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6358 Valid, 2410 Invalid, 9325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2114 Valid, 7211 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-11-29 03:19:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13330 states. [2023-11-29 03:19:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13330 to 10002. [2023-11-29 03:19:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10002 states, 7564 states have (on average 1.6292966684294024) internal successors, (12324), 7933 states have internal predecessors, (12324), 1980 states have call successors, (1980), 355 states have call predecessors, (1980), 457 states have return successors, (2682), 2003 states have call predecessors, (2682), 1975 states have call successors, (2682) [2023-11-29 03:19:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10002 states to 10002 states and 16986 transitions. [2023-11-29 03:19:56,903 INFO L78 Accepts]: Start accepts. Automaton has 10002 states and 16986 transitions. Word has length 142 [2023-11-29 03:19:56,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:56,904 INFO L495 AbstractCegarLoop]: Abstraction has 10002 states and 16986 transitions. [2023-11-29 03:19:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 03:19:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 10002 states and 16986 transitions. [2023-11-29 03:19:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 03:19:56,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:56,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:19:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 03:19:56,909 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:56,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash -982123317, now seen corresponding path program 1 times [2023-11-29 03:19:56,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:56,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960464431] [2023-11-29 03:19:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:56,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:19:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:19:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:19:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:19:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:19:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:19:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:19:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:19:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:19:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:19:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 03:19:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:19:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:19:57,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:57,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960464431] [2023-11-29 03:19:57,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960464431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:19:57,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398939422] [2023-11-29 03:19:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:57,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:57,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:19:57,670 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:19:57,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 03:19:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:57,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:19:57,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:19:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:19:58,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:19:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:19:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398939422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:19:58,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:19:58,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 18 [2023-11-29 03:19:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497317794] [2023-11-29 03:19:58,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:19:58,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:19:58,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:58,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:19:58,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:19:58,374 INFO L87 Difference]: Start difference. First operand 10002 states and 16986 transitions. Second operand has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 03:20:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:44,620 INFO L93 Difference]: Finished difference Result 24749 states and 45719 transitions. [2023-11-29 03:20:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-29 03:20:44,621 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) Word has length 143 [2023-11-29 03:20:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:20:44,758 INFO L225 Difference]: With dead ends: 24749 [2023-11-29 03:20:44,758 INFO L226 Difference]: Without dead ends: 14855 [2023-11-29 03:20:44,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=1759, Invalid=13741, Unknown=0, NotChecked=0, Total=15500 [2023-11-29 03:20:44,792 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 8001 mSDsluCounter, 6356 mSDsCounter, 0 mSdLazyCounter, 17347 mSolverCounterSat, 2573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 7164 SdHoareTripleChecker+Invalid, 19920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2573 IncrementalHoareTripleChecker+Valid, 17347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:20:44,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 7164 Invalid, 19920 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2573 Valid, 17347 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2023-11-29 03:20:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14855 states. [2023-11-29 03:20:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 10109. [2023-11-29 03:20:47,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10109 states, 7768 states have (on average 1.6027291452111225) internal successors, (12450), 8143 states have internal predecessors, (12450), 1858 states have call successors, (1858), 409 states have call predecessors, (1858), 482 states have return successors, (2555), 1825 states have call predecessors, (2555), 1853 states have call successors, (2555) [2023-11-29 03:20:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10109 states to 10109 states and 16863 transitions. [2023-11-29 03:20:47,332 INFO L78 Accepts]: Start accepts. Automaton has 10109 states and 16863 transitions. Word has length 143 [2023-11-29 03:20:47,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:20:47,332 INFO L495 AbstractCegarLoop]: Abstraction has 10109 states and 16863 transitions. [2023-11-29 03:20:47,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.333333333333334) internal successors, (186), 15 states have internal predecessors, (186), 7 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-29 03:20:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 10109 states and 16863 transitions. [2023-11-29 03:20:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 03:20:47,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:20:47,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-29 03:20:47,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 03:20:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 03:20:47,535 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:20:47,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1064315959, now seen corresponding path program 1 times [2023-11-29 03:20:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:47,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184065460] [2023-11-29 03:20:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:20:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:20:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:47,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:20:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:47,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:20:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:20:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:20:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:20:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:20:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:20:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:20:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:20:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:20:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:20:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 03:20:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:20:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 03:20:48,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:20:48,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184065460] [2023-11-29 03:20:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184065460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:20:48,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:20:48,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:20:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67058284] [2023-11-29 03:20:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:20:48,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:20:48,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:20:48,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:20:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:20:48,229 INFO L87 Difference]: Start difference. First operand 10109 states and 16863 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 03:21:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:04,952 INFO L93 Difference]: Finished difference Result 23291 states and 40860 transitions. [2023-11-29 03:21:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:21:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 146 [2023-11-29 03:21:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:05,014 INFO L225 Difference]: With dead ends: 23291 [2023-11-29 03:21:05,014 INFO L226 Difference]: Without dead ends: 14076 [2023-11-29 03:21:05,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:21:05,038 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 3296 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 5842 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 6761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 5842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:05,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 2974 Invalid, 6761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [919 Valid, 5842 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-11-29 03:21:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2023-11-29 03:21:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 10482. [2023-11-29 03:21:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10482 states, 8082 states have (on average 1.5925513486760703) internal successors, (12871), 8439 states have internal predecessors, (12871), 1887 states have call successors, (1887), 457 states have call predecessors, (1887), 512 states have return successors, (2547), 1854 states have call predecessors, (2547), 1882 states have call successors, (2547) [2023-11-29 03:21:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10482 states to 10482 states and 17305 transitions. [2023-11-29 03:21:07,685 INFO L78 Accepts]: Start accepts. Automaton has 10482 states and 17305 transitions. Word has length 146 [2023-11-29 03:21:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:21:07,685 INFO L495 AbstractCegarLoop]: Abstraction has 10482 states and 17305 transitions. [2023-11-29 03:21:07,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-29 03:21:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 10482 states and 17305 transitions. [2023-11-29 03:21:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 03:21:07,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:21:07,688 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] [2023-11-29 03:21:07,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 03:21:07,688 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:21:07,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:21:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1482282639, now seen corresponding path program 1 times [2023-11-29 03:21:07,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:21:07,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562143792] [2023-11-29 03:21:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:21:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:21:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:21:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:21:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:07,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:21:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:21:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:21:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:21:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:21:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:21:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:21:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 03:21:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:21:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 03:21:08,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:21:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562143792] [2023-11-29 03:21:08,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562143792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:21:08,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:21:08,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:21:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49322044] [2023-11-29 03:21:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:21:08,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:21:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:21:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:21:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:21:08,335 INFO L87 Difference]: Start difference. First operand 10482 states and 17305 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-29 03:21:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:35,258 INFO L93 Difference]: Finished difference Result 47581 states and 87696 transitions. [2023-11-29 03:21:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:21:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2023-11-29 03:21:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:35,480 INFO L225 Difference]: With dead ends: 47581 [2023-11-29 03:21:35,480 INFO L226 Difference]: Without dead ends: 37279 [2023-11-29 03:21:35,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:21:35,534 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 4813 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 1452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 5726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1452 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:35,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 2129 Invalid, 5726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1452 Valid, 4274 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-11-29 03:21:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37279 states. [2023-11-29 03:21:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37279 to 25248. [2023-11-29 03:21:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25248 states, 18602 states have (on average 1.5733792065369314) internal successors, (29268), 19759 states have internal predecessors, (29268), 5484 states have call successors, (5484), 939 states have call predecessors, (5484), 1161 states have return successors, (7915), 5449 states have call predecessors, (7915), 5479 states have call successors, (7915) [2023-11-29 03:21:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25248 states to 25248 states and 42667 transitions. [2023-11-29 03:21:44,329 INFO L78 Accepts]: Start accepts. Automaton has 25248 states and 42667 transitions. Word has length 149 [2023-11-29 03:21:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:21:44,330 INFO L495 AbstractCegarLoop]: Abstraction has 25248 states and 42667 transitions. [2023-11-29 03:21:44,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-29 03:21:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 25248 states and 42667 transitions. [2023-11-29 03:21:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 03:21:44,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:21:44,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:21:44,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 03:21:44,334 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:21:44,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:21:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1294838245, now seen corresponding path program 1 times [2023-11-29 03:21:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:21:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117264005] [2023-11-29 03:21:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:44,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:21:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:21:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:21:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:21:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:44,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:21:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:21:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:21:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:21:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:21:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:21:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:21:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:21:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 03:21:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:21:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 03:21:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 03:21:45,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:21:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117264005] [2023-11-29 03:21:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117264005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:21:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467478293] [2023-11-29 03:21:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:21:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:21:45,520 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:21:45,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 03:21:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:21:45,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:21:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 03:21:45,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:21:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467478293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:21:45,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:21:45,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2023-11-29 03:21:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750783908] [2023-11-29 03:21:45,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:21:45,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:21:45,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:21:45,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:21:45,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:21:45,980 INFO L87 Difference]: Start difference. First operand 25248 states and 42667 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 03:21:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:54,100 INFO L93 Difference]: Finished difference Result 26067 states and 44195 transitions. [2023-11-29 03:21:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:21:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2023-11-29 03:21:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:54,218 INFO L225 Difference]: With dead ends: 26067 [2023-11-29 03:21:54,218 INFO L226 Difference]: Without dead ends: 26050 [2023-11-29 03:21:54,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:21:54,234 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 48 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:54,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2552 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:21:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26050 states. [2023-11-29 03:22:01,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26050 to 25334. [2023-11-29 03:22:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25334 states, 18688 states have (on average 1.5684396404109588) internal successors, (29311), 19845 states have internal predecessors, (29311), 5484 states have call successors, (5484), 939 states have call predecessors, (5484), 1161 states have return successors, (7915), 5449 states have call predecessors, (7915), 5479 states have call successors, (7915) [2023-11-29 03:22:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25334 states to 25334 states and 42710 transitions. [2023-11-29 03:22:02,066 INFO L78 Accepts]: Start accepts. Automaton has 25334 states and 42710 transitions. Word has length 157 [2023-11-29 03:22:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:22:02,066 INFO L495 AbstractCegarLoop]: Abstraction has 25334 states and 42710 transitions. [2023-11-29 03:22:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 03:22:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 25334 states and 42710 transitions. [2023-11-29 03:22:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-29 03:22:02,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:22:02,072 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:22:02,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 03:22:02,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:22:02,273 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:22:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:22:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 717412311, now seen corresponding path program 1 times [2023-11-29 03:22:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:22:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259278580] [2023-11-29 03:22:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:22:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:22:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:22:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:22:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:02,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:22:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:22:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:22:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:22:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:22:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:22:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:22:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:22:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:22:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:22:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 03:22:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:22:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:22:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:22:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 03:22:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 03:22:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 03:22:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 03:22:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 03:22:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:22:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259278580] [2023-11-29 03:22:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259278580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:22:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277881897] [2023-11-29 03:22:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:22:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:22:03,301 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:22:03,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 03:22:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:03,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:22:03,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:22:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 03:22:04,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:22:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-29 03:22:04,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277881897] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:22:04,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:22:04,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 22 [2023-11-29 03:22:04,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663778148] [2023-11-29 03:22:04,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:22:04,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:22:04,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:22:04,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:22:04,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:22:04,512 INFO L87 Difference]: Start difference. First operand 25334 states and 42710 transitions. Second operand has 22 states, 21 states have (on average 12.523809523809524) internal successors, (263), 16 states have internal predecessors, (263), 9 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-11-29 03:23:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:23:02,342 INFO L93 Difference]: Finished difference Result 114045 states and 220500 transitions. [2023-11-29 03:23:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 03:23:02,343 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 12.523809523809524) internal successors, (263), 16 states have internal predecessors, (263), 9 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) Word has length 187 [2023-11-29 03:23:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:23:03,066 INFO L225 Difference]: With dead ends: 114045 [2023-11-29 03:23:03,066 INFO L226 Difference]: Without dead ends: 88894 [2023-11-29 03:23:03,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=793, Invalid=3367, Unknown=0, NotChecked=0, Total=4160 [2023-11-29 03:23:03,213 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 8538 mSDsluCounter, 5929 mSDsCounter, 0 mSdLazyCounter, 16359 mSolverCounterSat, 2549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8547 SdHoareTripleChecker+Valid, 6856 SdHoareTripleChecker+Invalid, 18908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2549 IncrementalHoareTripleChecker+Valid, 16359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:23:03,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8547 Valid, 6856 Invalid, 18908 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2549 Valid, 16359 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2023-11-29 03:23:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88894 states. [2023-11-29 03:23:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88894 to 59740. [2023-11-29 03:23:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59740 states, 42875 states have (on average 1.545539358600583) internal successors, (66265), 45683 states have internal predecessors, (66265), 14261 states have call successors, (14261), 1972 states have call predecessors, (14261), 2603 states have return successors, (21587), 14340 states have call predecessors, (21587), 14256 states have call successors, (21587) [2023-11-29 03:23:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59740 states to 59740 states and 102113 transitions. [2023-11-29 03:23:26,260 INFO L78 Accepts]: Start accepts. Automaton has 59740 states and 102113 transitions. Word has length 187 [2023-11-29 03:23:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:23:26,261 INFO L495 AbstractCegarLoop]: Abstraction has 59740 states and 102113 transitions. [2023-11-29 03:23:26,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 12.523809523809524) internal successors, (263), 16 states have internal predecessors, (263), 9 states have call successors, (56), 8 states have call predecessors, (56), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-11-29 03:23:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 59740 states and 102113 transitions. [2023-11-29 03:23:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 03:23:26,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:23:26,277 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:23:26,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 03:23:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 03:23:26,477 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:23:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1240166124, now seen corresponding path program 1 times [2023-11-29 03:23:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206945864] [2023-11-29 03:23:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:23:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:23:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:23:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 03:23:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:23:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:23:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:23:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:23:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:23:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:23:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:23:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:23:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:23:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:23:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 03:23:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:23:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 03:23:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 03:23:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:23:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 03:23:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-29 03:23:27,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206945864] [2023-11-29 03:23:27,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206945864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:23:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323574048] [2023-11-29 03:23:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:27,095 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:27,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 03:23:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:27,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 1995 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:23:27,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 03:23:27,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:23:27,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323574048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:23:27,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:23:27,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 03:23:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099437159] [2023-11-29 03:23:27,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:23:27,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:23:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:23:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:23:27,423 INFO L87 Difference]: Start difference. First operand 59740 states and 102113 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 03:23:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:23:48,691 INFO L93 Difference]: Finished difference Result 119396 states and 204107 transitions. [2023-11-29 03:23:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:23:48,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 190 [2023-11-29 03:23:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:23:48,999 INFO L225 Difference]: With dead ends: 119396 [2023-11-29 03:23:49,000 INFO L226 Difference]: Without dead ends: 59795 [2023-11-29 03:23:49,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:23:49,203 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 65 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:23:49,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 2422 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:23:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59795 states. [2023-11-29 03:24:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59795 to 59741. [2023-11-29 03:24:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59741 states, 42876 states have (on average 1.5454100195913798) internal successors, (66261), 45684 states have internal predecessors, (66261), 14261 states have call successors, (14261), 1972 states have call predecessors, (14261), 2603 states have return successors, (21587), 14340 states have call predecessors, (21587), 14256 states have call successors, (21587) [2023-11-29 03:24:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59741 states to 59741 states and 102109 transitions. [2023-11-29 03:24:10,353 INFO L78 Accepts]: Start accepts. Automaton has 59741 states and 102109 transitions. Word has length 190 [2023-11-29 03:24:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:24:10,353 INFO L495 AbstractCegarLoop]: Abstraction has 59741 states and 102109 transitions. [2023-11-29 03:24:10,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 03:24:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 59741 states and 102109 transitions. [2023-11-29 03:24:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 03:24:10,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:24:10,368 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:24:10,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-29 03:24:10,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:24:10,569 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:24:10,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:24:10,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1525256165, now seen corresponding path program 1 times [2023-11-29 03:24:10,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:24:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544228614] [2023-11-29 03:24:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:24:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:24:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:24:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:24:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:24:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:24:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:24:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:24:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 03:24:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:24:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:24:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:24:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:24:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:24:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:24:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 03:24:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:24:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 03:24:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:24:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 03:24:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 03:24:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 03:24:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 03:24:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 03:24:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:24:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544228614] [2023-11-29 03:24:11,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544228614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:24:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935001277] [2023-11-29 03:24:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:24:11,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:24:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:24:11,438 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:24:11,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 03:24:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:11,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:24:11,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:24:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 03:24:11,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:24:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-29 03:24:12,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935001277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:24:12,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:24:12,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2023-11-29 03:24:12,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341017424] [2023-11-29 03:24:12,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:24:12,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 03:24:12,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:24:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 03:24:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-11-29 03:24:12,270 INFO L87 Difference]: Start difference. First operand 59741 states and 102109 transitions. Second operand has 22 states, 21 states have (on average 11.619047619047619) internal successors, (244), 16 states have internal predecessors, (244), 8 states have call successors, (52), 8 states have call predecessors, (52), 11 states have return successors, (52), 10 states have call predecessors, (52), 8 states have call successors, (52) [2023-11-29 03:25:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:25:44,509 INFO L93 Difference]: Finished difference Result 228663 states and 424786 transitions. [2023-11-29 03:25:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:25:44,510 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 11.619047619047619) internal successors, (244), 16 states have internal predecessors, (244), 8 states have call successors, (52), 8 states have call predecessors, (52), 11 states have return successors, (52), 10 states have call predecessors, (52), 8 states have call successors, (52) Word has length 193 [2023-11-29 03:25:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:25:46,026 INFO L225 Difference]: With dead ends: 228663 [2023-11-29 03:25:46,026 INFO L226 Difference]: Without dead ends: 169046 [2023-11-29 03:25:46,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=464, Invalid=2188, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 03:25:46,357 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 6046 mSDsluCounter, 8414 mSDsCounter, 0 mSdLazyCounter, 19186 mSolverCounterSat, 1933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6060 SdHoareTripleChecker+Valid, 9337 SdHoareTripleChecker+Invalid, 21119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1933 IncrementalHoareTripleChecker+Valid, 19186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:25:46,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6060 Valid, 9337 Invalid, 21119 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1933 Valid, 19186 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-11-29 03:25:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169046 states. [2023-11-29 03:26:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169046 to 131975. [2023-11-29 03:26:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131975 states, 91832 states have (on average 1.5448645352382613) internal successors, (141868), 98541 states have internal predecessors, (141868), 34613 states have call successors, (34613), 3879 states have call predecessors, (34613), 5529 states have return successors, (51448), 35086 states have call predecessors, (51448), 34608 states have call successors, (51448) [2023-11-29 03:26:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131975 states to 131975 states and 227929 transitions. [2023-11-29 03:26:41,458 INFO L78 Accepts]: Start accepts. Automaton has 131975 states and 227929 transitions. Word has length 193 [2023-11-29 03:26:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:26:41,458 INFO L495 AbstractCegarLoop]: Abstraction has 131975 states and 227929 transitions. [2023-11-29 03:26:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 11.619047619047619) internal successors, (244), 16 states have internal predecessors, (244), 8 states have call successors, (52), 8 states have call predecessors, (52), 11 states have return successors, (52), 10 states have call predecessors, (52), 8 states have call successors, (52) [2023-11-29 03:26:41,458 INFO L276 IsEmpty]: Start isEmpty. Operand 131975 states and 227929 transitions. [2023-11-29 03:26:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-29 03:26:41,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:26:41,481 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:26:41,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 03:26:41,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 03:26:41,682 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:26:41,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:26:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1872578969, now seen corresponding path program 1 times [2023-11-29 03:26:41,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:26:41,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703125018] [2023-11-29 03:26:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:26:41,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:26:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:26:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:26:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:26:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:26:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:26:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:26:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 03:26:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:26:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:26:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:26:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:26:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:26:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 03:26:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 03:26:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 03:26:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:26:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 03:26:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 03:26:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 03:26:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 03:26:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:26:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:26:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:26:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:26:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:26:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:26:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 03:26:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 03:26:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:26:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703125018] [2023-11-29 03:26:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703125018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:26:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809308508] [2023-11-29 03:26:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:26:42,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:26:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:26:42,897 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:26:42,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 03:26:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:43,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:26:43,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:26:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-29 03:26:43,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:26:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809308508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:26:43,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:26:43,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-11-29 03:26:43,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401064536] [2023-11-29 03:26:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:26:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:26:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:26:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:26:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:26:43,291 INFO L87 Difference]: Start difference. First operand 131975 states and 227929 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:27:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:27:59,310 INFO L93 Difference]: Finished difference Result 318925 states and 555593 transitions. [2023-11-29 03:27:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:27:59,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 241 [2023-11-29 03:27:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:28:01,028 INFO L225 Difference]: With dead ends: 318925 [2023-11-29 03:28:01,029 INFO L226 Difference]: Without dead ends: 187112 [2023-11-29 03:28:01,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:28:01,688 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 825 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:28:01,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1551 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:28:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187112 states. [2023-11-29 03:29:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187112 to 187110. [2023-11-29 03:29:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187110 states, 131372 states have (on average 1.5418886825198672) internal successors, (202561), 140884 states have internal predecessors, (202561), 47624 states have call successors, (47624), 5839 states have call predecessors, (47624), 8113 states have return successors, (72730), 48174 states have call predecessors, (72730), 47619 states have call successors, (72730) [2023-11-29 03:29:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187110 states to 187110 states and 322915 transitions. [2023-11-29 03:29:16,252 INFO L78 Accepts]: Start accepts. Automaton has 187110 states and 322915 transitions. Word has length 241 [2023-11-29 03:29:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:29:16,253 INFO L495 AbstractCegarLoop]: Abstraction has 187110 states and 322915 transitions. [2023-11-29 03:29:16,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:29:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 187110 states and 322915 transitions. [2023-11-29 03:29:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-29 03:29:16,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:29:16,461 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:29:16,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 03:29:16,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 03:29:16,662 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:29:16,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:29:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1285818630, now seen corresponding path program 1 times [2023-11-29 03:29:16,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:29:16,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100265583] [2023-11-29 03:29:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:29:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:29:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:29:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:29:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:29:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:29:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 03:29:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 03:29:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:29:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:29:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:29:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:29:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:29:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 03:29:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 03:29:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 03:29:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:29:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 03:29:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 03:29:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 03:29:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 03:29:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:29:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:29:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:29:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 03:29:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:29:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 03:29:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 03:29:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:29:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100265583] [2023-11-29 03:29:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100265583] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:29:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511242883] [2023-11-29 03:29:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:29:17,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:29:17,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:29:17,357 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:29:17,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccd94d0-6f3d-45cd-bc7a-91c0bdfaa719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 03:29:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:29:17,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:29:17,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:29:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 03:29:17,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:29:17,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511242883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:29:17,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:29:17,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-11-29 03:29:17,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010547530] [2023-11-29 03:29:17,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:29:17,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:29:17,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:29:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:29:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:29:17,714 INFO L87 Difference]: Start difference. First operand 187110 states and 322915 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)