./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme --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 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:59,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:59,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:51:59,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:59,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:59,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:59,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:59,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:59,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:59,889 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:59,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:59,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:59,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:59,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:59,897 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:59,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:59,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:59,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:59,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:59,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:59,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:59,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:59,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:59,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:59,904 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:59,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:59,905 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:59,906 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:59,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:59,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:59,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:59,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:59,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:59,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:59,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:59,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:59,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:59,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:59,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:59,911 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:59,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:59,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:59,913 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_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d [2023-11-26 11:52:00,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:52:00,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:52:00,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:52:00,365 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:52:00,366 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:52:00,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2023-11-26 11:52:03,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:04,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:04,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2023-11-26 11:52:04,202 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/data/c35eb0303/19160d4834fa45c7be1963f71c43d24b/FLAG01391e371 [2023-11-26 11:52:04,220 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/data/c35eb0303/19160d4834fa45c7be1963f71c43d24b [2023-11-26 11:52:04,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:04,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:04,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:04,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:04,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:04,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:04" (1/1) ... [2023-11-26 11:52:04,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f354f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:04, skipping insertion in model container [2023-11-26 11:52:04,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:04" (1/1) ... [2023-11-26 11:52:04,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:04,930 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_a2b58b26-2045-4fad-8b81-05e850bf1577/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2023-11-26 11:52:05,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:05,053 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:05,063 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2023-11-26 11:52:05,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1639] [2023-11-26 11:52:05,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2005] [2023-11-26 11:52:05,066 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2021] [2023-11-26 11:52:05,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2059] [2023-11-26 11:52:05,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2068] [2023-11-26 11:52:05,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2162] [2023-11-26 11:52:05,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2828] [2023-11-26 11:52:05,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3180] [2023-11-26 11:52:05,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3361] [2023-11-26 11:52:05,183 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_a2b58b26-2045-4fad-8b81-05e850bf1577/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2023-11-26 11:52:05,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:05,300 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:05,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05 WrapperNode [2023-11-26 11:52:05,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:05,302 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:05,302 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:05,302 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:05,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,418 INFO L138 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1122 [2023-11-26 11:52:05,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:05,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:05,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:05,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:05,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,486 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-26 11:52:05,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:05,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:05,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:05,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:05,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (1/1) ... [2023-11-26 11:52:05,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:05,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:05,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:05,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-26 11:52:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-26 11:52:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-26 11:52:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-26 11:52:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-26 11:52:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-26 11:52:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-26 11:52:05,699 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-26 11:52:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-26 11:52:05,700 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-26 11:52:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-26 11:52:05,701 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-26 11:52:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-26 11:52:05,702 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-26 11:52:05,703 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-26 11:52:05,703 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-26 11:52:05,704 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-26 11:52:05,705 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-26 11:52:05,706 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-26 11:52:05,706 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-26 11:52:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-26 11:52:05,707 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-26 11:52:05,707 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-26 11:52:05,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-26 11:52:05,708 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-26 11:52:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-26 11:52:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-26 11:52:05,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-26 11:52:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-26 11:52:05,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-26 11:52:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-26 11:52:05,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-26 11:52:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-26 11:52:05,711 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-26 11:52:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-26 11:52:05,711 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-26 11:52:05,711 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-26 11:52:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-26 11:52:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-26 11:52:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-26 11:52:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-26 11:52:05,713 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-26 11:52:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:52:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:52:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:52:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:52:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:52:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:52:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:52:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:52:05,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:52:05,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:52:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 11:52:05,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 11:52:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 11:52:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 11:52:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 11:52:05,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 11:52:05,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-26 11:52:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-26 11:52:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-26 11:52:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-26 11:52:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-26 11:52:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-26 11:52:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-26 11:52:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-26 11:52:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-26 11:52:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-26 11:52:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-26 11:52:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-26 11:52:05,723 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-26 11:52:05,723 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-26 11:52:06,049 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:06,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:07,379 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:07,558 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:07,559 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:52:07,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:07 BoogieIcfgContainer [2023-11-26 11:52:07,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:07,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:07,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:07,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:07,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:04" (1/3) ... [2023-11-26 11:52:07,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70489d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:07, skipping insertion in model container [2023-11-26 11:52:07,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:05" (2/3) ... [2023-11-26 11:52:07,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70489d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:07, skipping insertion in model container [2023-11-26 11:52:07,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:07" (3/3) ... [2023-11-26 11:52:07,575 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2023-11-26 11:52:07,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:07,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:52:07,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:07,694 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;@776178d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:07,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:52:07,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 424 states have (on average 1.7169811320754718) internal successors, (728), 447 states have internal predecessors, (728), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-26 11:52:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 11:52:07,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:07,728 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] [2023-11-26 11:52:07,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:07,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:07,735 INFO L85 PathProgramCache]: Analyzing trace with hash 125562786, now seen corresponding path program 1 times [2023-11-26 11:52:07,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:07,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710975596] [2023-11-26 11:52:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:52:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:52:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:52:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:52:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:52:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710975596] [2023-11-26 11:52:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710975596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:09,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:09,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:52:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514214462] [2023-11-26 11:52:09,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:09,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:09,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:09,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:09,603 INFO L87 Difference]: Start difference. First operand has 554 states, 424 states have (on average 1.7169811320754718) internal successors, (728), 447 states have internal predecessors, (728), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:18,013 INFO L93 Difference]: Finished difference Result 1264 states and 2154 transitions. [2023-11-26 11:52:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:18,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2023-11-26 11:52:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:18,049 INFO L225 Difference]: With dead ends: 1264 [2023-11-26 11:52:18,050 INFO L226 Difference]: Without dead ends: 710 [2023-11-26 11:52:18,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:18,069 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 670 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:18,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 678 Invalid, 3356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 3229 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-26 11:52:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-26 11:52:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 550. [2023-11-26 11:52:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 422 states have (on average 1.7061611374407584) internal successors, (720), 443 states have internal predecessors, (720), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 919 transitions. [2023-11-26 11:52:18,332 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 919 transitions. Word has length 72 [2023-11-26 11:52:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:18,333 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 919 transitions. [2023-11-26 11:52:18,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:18,334 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 919 transitions. [2023-11-26 11:52:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 11:52:18,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:18,349 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] [2023-11-26 11:52:18,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:52:18,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:18,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1813588004, now seen corresponding path program 1 times [2023-11-26 11:52:18,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:18,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806878472] [2023-11-26 11:52:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:18,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:52:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:52:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:52:19,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:19,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806878472] [2023-11-26 11:52:19,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806878472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:19,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:19,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:52:19,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626288009] [2023-11-26 11:52:19,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:19,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:52:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:52:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:19,499 INFO L87 Difference]: Start difference. First operand 550 states and 919 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:27,047 INFO L93 Difference]: Finished difference Result 1257 states and 2126 transitions. [2023-11-26 11:52:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:52:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2023-11-26 11:52:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:27,057 INFO L225 Difference]: With dead ends: 1257 [2023-11-26 11:52:27,057 INFO L226 Difference]: Without dead ends: 710 [2023-11-26 11:52:27,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:27,062 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 667 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3192 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:27,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 670 Invalid, 3321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 3192 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-26 11:52:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-26 11:52:27,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 550. [2023-11-26 11:52:27,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 422 states have (on average 1.7037914691943128) internal successors, (719), 443 states have internal predecessors, (719), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 918 transitions. [2023-11-26 11:52:27,237 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 918 transitions. Word has length 75 [2023-11-26 11:52:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:27,237 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 918 transitions. [2023-11-26 11:52:27,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 918 transitions. [2023-11-26 11:52:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 11:52:27,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:27,240 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] [2023-11-26 11:52:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:52:27,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:27,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:27,242 INFO L85 PathProgramCache]: Analyzing trace with hash 368781364, now seen corresponding path program 1 times [2023-11-26 11:52:27,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:27,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622076707] [2023-11-26 11:52:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:27,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:52:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:52:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:52:28,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622076707] [2023-11-26 11:52:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622076707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:28,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056366767] [2023-11-26 11:52:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:28,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:28,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:28,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:28,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:28,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:28,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:52:28,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056366767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-26 11:52:28,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174313795] [2023-11-26 11:52:28,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:28,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:28,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:28,727 INFO L87 Difference]: Start difference. First operand 550 states and 918 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:29,027 INFO L93 Difference]: Finished difference Result 1104 states and 1843 transitions. [2023-11-26 11:52:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:29,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2023-11-26 11:52:29,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:29,034 INFO L225 Difference]: With dead ends: 1104 [2023-11-26 11:52:29,034 INFO L226 Difference]: Without dead ends: 559 [2023-11-26 11:52:29,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:29,039 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 20 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:29,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2669 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-26 11:52:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-26 11:52:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.7) internal successors, (731), 451 states have internal predecessors, (731), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 930 transitions. [2023-11-26 11:52:29,171 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 930 transitions. Word has length 77 [2023-11-26 11:52:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:29,171 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 930 transitions. [2023-11-26 11:52:29,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 930 transitions. [2023-11-26 11:52:29,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 11:52:29,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:29,174 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] [2023-11-26 11:52:29,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:29,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:29,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash -46088001, now seen corresponding path program 1 times [2023-11-26 11:52:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562811970] [2023-11-26 11:52:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:52:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:52:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 11:52:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:52:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562811970] [2023-11-26 11:52:30,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562811970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279631229] [2023-11-26 11:52:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:30,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:30,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:30,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:30,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:30,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:30,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:52:30,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:30,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279631229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:30,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:30,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-26 11:52:30,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750446931] [2023-11-26 11:52:30,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:30,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:30,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:30,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:30,826 INFO L87 Difference]: Start difference. First operand 559 states and 930 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:31,052 INFO L93 Difference]: Finished difference Result 1106 states and 1844 transitions. [2023-11-26 11:52:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:31,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2023-11-26 11:52:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:31,058 INFO L225 Difference]: With dead ends: 1106 [2023-11-26 11:52:31,058 INFO L226 Difference]: Without dead ends: 559 [2023-11-26 11:52:31,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:31,063 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 18 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:31,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2669 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-26 11:52:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-26 11:52:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.697674418604651) internal successors, (730), 451 states have internal predecessors, (730), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 929 transitions. [2023-11-26 11:52:31,184 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 929 transitions. Word has length 78 [2023-11-26 11:52:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:31,185 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 929 transitions. [2023-11-26 11:52:31,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 929 transitions. [2023-11-26 11:52:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 11:52:31,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:31,187 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] [2023-11-26 11:52:31,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:31,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:31,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:31,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:31,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1007388776, now seen corresponding path program 1 times [2023-11-26 11:52:31,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254853071] [2023-11-26 11:52:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:31,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:52:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:52:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:52:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:52:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254853071] [2023-11-26 11:52:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254853071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842908223] [2023-11-26 11:52:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:32,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:32,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:32,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:32,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:32,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:32,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:52:32,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842908223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-26 11:52:32,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032327270] [2023-11-26 11:52:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:32,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:32,742 INFO L87 Difference]: Start difference. First operand 559 states and 929 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:32,952 INFO L93 Difference]: Finished difference Result 1106 states and 1843 transitions. [2023-11-26 11:52:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:32,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2023-11-26 11:52:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:32,958 INFO L225 Difference]: With dead ends: 1106 [2023-11-26 11:52:32,958 INFO L226 Difference]: Without dead ends: 559 [2023-11-26 11:52:32,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:32,962 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 17 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:32,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2669 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-26 11:52:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-26 11:52:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.6953488372093024) internal successors, (729), 451 states have internal predecessors, (729), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 928 transitions. [2023-11-26 11:52:33,110 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 928 transitions. Word has length 79 [2023-11-26 11:52:33,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:33,110 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 928 transitions. [2023-11-26 11:52:33,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:33,111 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 928 transitions. [2023-11-26 11:52:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:52:33,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:33,113 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] [2023-11-26 11:52:33,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:33,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:33,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:33,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:33,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1728194077, now seen corresponding path program 1 times [2023-11-26 11:52:33,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:33,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475274140] [2023-11-26 11:52:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:33,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:52:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:33,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:52:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:52:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:34,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:52:34,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475274140] [2023-11-26 11:52:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475274140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416492822] [2023-11-26 11:52:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:34,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:34,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:34,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:52:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:34,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:34,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:34,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:34,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416492822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:34,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:34,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-26 11:52:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155089443] [2023-11-26 11:52:34,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:34,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:34,706 INFO L87 Difference]: Start difference. First operand 559 states and 928 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:35,056 INFO L93 Difference]: Finished difference Result 1116 states and 1863 transitions. [2023-11-26 11:52:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:35,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-11-26 11:52:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:35,064 INFO L225 Difference]: With dead ends: 1116 [2023-11-26 11:52:35,064 INFO L226 Difference]: Without dead ends: 559 [2023-11-26 11:52:35,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:35,069 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 133 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:35,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2488 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-26 11:52:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-26 11:52:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.6837209302325582) internal successors, (724), 451 states have internal predecessors, (724), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 923 transitions. [2023-11-26 11:52:35,190 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 923 transitions. Word has length 80 [2023-11-26 11:52:35,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:35,190 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 923 transitions. [2023-11-26 11:52:35,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:35,191 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 923 transitions. [2023-11-26 11:52:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 11:52:35,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:35,193 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] [2023-11-26 11:52:35,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:35,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:52:35,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:35,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -458702843, now seen corresponding path program 1 times [2023-11-26 11:52:35,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:35,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124229538] [2023-11-26 11:52:35,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:35,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:52:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:52:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 11:52:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:52:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124229538] [2023-11-26 11:52:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124229538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941255298] [2023-11-26 11:52:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:36,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:36,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:36,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:52:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:36,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:36,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:36,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941255298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:36,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-26 11:52:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056477430] [2023-11-26 11:52:36,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:36,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:36,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:36,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:36,791 INFO L87 Difference]: Start difference. First operand 559 states and 923 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:37,058 INFO L93 Difference]: Finished difference Result 1116 states and 1853 transitions. [2023-11-26 11:52:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:37,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2023-11-26 11:52:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:37,065 INFO L225 Difference]: With dead ends: 1116 [2023-11-26 11:52:37,065 INFO L226 Difference]: Without dead ends: 559 [2023-11-26 11:52:37,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:37,070 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 127 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:37,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2488 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-26 11:52:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2023-11-26 11:52:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 430 states have (on average 1.672093023255814) internal successors, (719), 451 states have internal predecessors, (719), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 918 transitions. [2023-11-26 11:52:37,189 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 918 transitions. Word has length 82 [2023-11-26 11:52:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:37,190 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 918 transitions. [2023-11-26 11:52:37,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 918 transitions. [2023-11-26 11:52:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-26 11:52:37,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:37,192 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] [2023-11-26 11:52:37,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:37,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:52:37,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:37,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1714432409, now seen corresponding path program 1 times [2023-11-26 11:52:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965629492] [2023-11-26 11:52:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:37,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:37,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:52:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:52:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:52:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:52:38,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965629492] [2023-11-26 11:52:38,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965629492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:38,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548206569] [2023-11-26 11:52:38,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:38,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:38,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:38,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:38,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:52:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:38,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:38,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:38,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548206569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:38,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-26 11:52:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420935889] [2023-11-26 11:52:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:38,804 INFO L87 Difference]: Start difference. First operand 559 states and 918 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:39,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:39,114 INFO L93 Difference]: Finished difference Result 1152 states and 1902 transitions. [2023-11-26 11:52:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:39,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2023-11-26 11:52:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:39,121 INFO L225 Difference]: With dead ends: 1152 [2023-11-26 11:52:39,121 INFO L226 Difference]: Without dead ends: 609 [2023-11-26 11:52:39,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:39,125 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 177 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:39,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2498 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-26 11:52:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2023-11-26 11:52:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 479 states have (on average 1.6764091858037578) internal successors, (803), 500 states have internal predecessors, (803), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1002 transitions. [2023-11-26 11:52:39,244 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1002 transitions. Word has length 84 [2023-11-26 11:52:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:39,245 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 1002 transitions. [2023-11-26 11:52:39,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1002 transitions. [2023-11-26 11:52:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-26 11:52:39,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:39,247 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] [2023-11-26 11:52:39,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:39,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:52:39,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:39,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash 72352856, now seen corresponding path program 1 times [2023-11-26 11:52:39,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:39,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101924684] [2023-11-26 11:52:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:39,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:39,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:52:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:52:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:52:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:52:40,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:40,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101924684] [2023-11-26 11:52:40,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101924684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:40,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375290343] [2023-11-26 11:52:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:40,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:40,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:40,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:40,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:52:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:40,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:52:40,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:40,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:40,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375290343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:40,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:40,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-26 11:52:40,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849813458] [2023-11-26 11:52:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:40,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:40,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:40,785 INFO L87 Difference]: Start difference. First operand 609 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:41,088 INFO L93 Difference]: Finished difference Result 1166 states and 1925 transitions. [2023-11-26 11:52:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:52:41,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2023-11-26 11:52:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:41,094 INFO L225 Difference]: With dead ends: 1166 [2023-11-26 11:52:41,094 INFO L226 Difference]: Without dead ends: 609 [2023-11-26 11:52:41,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:41,098 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 171 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:41,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2498 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-26 11:52:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2023-11-26 11:52:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 479 states have (on average 1.6659707724425887) internal successors, (798), 500 states have internal predecessors, (798), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:52:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 997 transitions. [2023-11-26 11:52:41,215 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 997 transitions. Word has length 85 [2023-11-26 11:52:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:41,216 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 997 transitions. [2023-11-26 11:52:41,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:52:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 997 transitions. [2023-11-26 11:52:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-26 11:52:41,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:41,218 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] [2023-11-26 11:52:41,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:41,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:41,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:41,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1224636503, now seen corresponding path program 1 times [2023-11-26 11:52:41,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:41,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724137418] [2023-11-26 11:52:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:41,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:52:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:52:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:41,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:52:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:52:42,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724137418] [2023-11-26 11:52:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724137418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801921802] [2023-11-26 11:52:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:42,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:42,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:42,550 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:42,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:52:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:42,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:52:42,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:52:43,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:43,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801921802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:43,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:43,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 20 [2023-11-26 11:52:43,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621108007] [2023-11-26 11:52:43,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:43,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:52:43,040 INFO L87 Difference]: Start difference. First operand 609 states and 997 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 11:52:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:43,414 INFO L93 Difference]: Finished difference Result 1188 states and 1954 transitions. [2023-11-26 11:52:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:52:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2023-11-26 11:52:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:43,421 INFO L225 Difference]: With dead ends: 1188 [2023-11-26 11:52:43,422 INFO L226 Difference]: Without dead ends: 645 [2023-11-26 11:52:43,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:52:43,426 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 171 mSDsluCounter, 5140 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 6013 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:43,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 6013 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:52:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-26 11:52:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 627. [2023-11-26 11:52:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 494 states have (on average 1.665991902834008) internal successors, (823), 517 states have internal predecessors, (823), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2023-11-26 11:52:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1026 transitions. [2023-11-26 11:52:43,604 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1026 transitions. Word has length 85 [2023-11-26 11:52:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:43,604 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1026 transitions. [2023-11-26 11:52:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 11:52:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1026 transitions. [2023-11-26 11:52:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-26 11:52:43,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:43,608 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] [2023-11-26 11:52:43,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:43,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:43,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:43,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1668247926, now seen corresponding path program 1 times [2023-11-26 11:52:43,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:43,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491648264] [2023-11-26 11:52:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:43,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:52:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:52:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:52:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:52:44,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491648264] [2023-11-26 11:52:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491648264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846526908] [2023-11-26 11:52:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:44,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:44,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:44,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:44,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:52:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:45,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:52:45,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:52:45,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846526908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:45,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-26 11:52:45,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688679755] [2023-11-26 11:52:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:45,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:52:45,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:52:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:52:45,115 INFO L87 Difference]: Start difference. First operand 627 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 11:52:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:45,389 INFO L93 Difference]: Finished difference Result 1126 states and 1854 transitions. [2023-11-26 11:52:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2023-11-26 11:52:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:45,400 INFO L225 Difference]: With dead ends: 1126 [2023-11-26 11:52:45,400 INFO L226 Difference]: Without dead ends: 649 [2023-11-26 11:52:45,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:45,404 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 132 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 5211 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:45,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 5211 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-11-26 11:52:45,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 645. [2023-11-26 11:52:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 509 states have (on average 1.6660117878192535) internal successors, (848), 534 states have internal predecessors, (848), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2023-11-26 11:52:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1055 transitions. [2023-11-26 11:52:45,551 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1055 transitions. Word has length 85 [2023-11-26 11:52:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:45,551 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1055 transitions. [2023-11-26 11:52:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-26 11:52:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1055 transitions. [2023-11-26 11:52:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 11:52:45,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:45,555 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] [2023-11-26 11:52:45,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 11:52:45,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:45,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:52:45,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:45,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1260743686, now seen corresponding path program 1 times [2023-11-26 11:52:45,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904862243] [2023-11-26 11:52:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:52:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:52:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:52:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:52:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 11:52:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:52:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:52:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:52:46,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:46,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904862243] [2023-11-26 11:52:46,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904862243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:46,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667140137] [2023-11-26 11:52:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:46,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:46,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:46,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2b58b26-2045-4fad-8b81-05e850bf1577/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process