./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx --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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:56:55,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:56:55,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 20:56:55,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:56:55,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:56:55,448 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:56:55,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:56:55,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:56:55,451 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:56:55,456 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:56:55,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:56:55,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:56:55,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:56:55,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:56:55,461 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:56:55,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:56:55,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:56:55,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:56:55,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:56:55,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:56:55,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:56:55,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:56:55,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:56:55,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:56:55,466 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:56:55,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:56:55,467 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:56:55,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:56:55,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:56:55,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:56:55,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:56:55,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:56:55,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:56:55,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:56:55,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:56:55,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:56:55,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:56:55,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:56:55,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:56:55,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:56:55,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:56:55,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:56:55,474 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_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2023-11-21 20:56:55,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:56:55,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:56:55,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:56:55,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:56:55,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:56:55,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2023-11-21 20:56:59,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:56:59,480 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:56:59,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2023-11-21 20:56:59,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/data/d466dcf26/1e0810acdd4a4d65944dff4dcb00ae0c/FLAGfb8c6f34f [2023-11-21 20:56:59,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/data/d466dcf26/1e0810acdd4a4d65944dff4dcb00ae0c [2023-11-21 20:56:59,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:56:59,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:56:59,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:56:59,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:56:59,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:56:59,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:56:59" (1/1) ... [2023-11-21 20:56:59,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac6931a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:56:59, skipping insertion in model container [2023-11-21 20:56:59,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:56:59" (1/1) ... [2023-11-21 20:56:59,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:57:00,032 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_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2023-11-21 20:57:00,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:57:00,298 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:57:00,310 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-21 20:57:00,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [716] [2023-11-21 20:57:00,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [837] [2023-11-21 20:57:00,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [851] [2023-11-21 20:57:00,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1217] [2023-11-21 20:57:00,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1226] [2023-11-21 20:57:00,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1264] [2023-11-21 20:57:00,314 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1622] [2023-11-21 20:57:00,314 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3131] [2023-11-21 20:57:00,314 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3312] [2023-11-21 20:57:00,450 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_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2023-11-21 20:57:00,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:57:00,582 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:57:00,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00 WrapperNode [2023-11-21 20:57:00,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:57:00,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:57:00,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:57:00,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:57:00,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,688 INFO L138 Inliner]: procedures = 92, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1070 [2023-11-21 20:57:00,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:57:00,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:57:00,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:57:00,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:57:00,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,714 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,776 INFO L187 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4] [2023-11-21 20:57:00,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:57:00,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:57:00,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:57:00,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:57:00,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (1/1) ... [2023-11-21 20:57:00,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:57:00,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:57:00,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:57:00,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78ec8dfd-f6ec-464b-a55e-84a4f8a99d16/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:57:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:57:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-21 20:57:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-21 20:57:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 20:57:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 20:57:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-21 20:57:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-21 20:57:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 20:57:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 20:57:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 20:57:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 20:57:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 20:57:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 20:57:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 20:57:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 20:57:00,997 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-21 20:57:00,997 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-21 20:57:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 20:57:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 20:57:00,998 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 20:57:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 20:57:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 20:57:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 20:57:00,999 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 20:57:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 20:57:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-21 20:57:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-21 20:57:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 20:57:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 20:57:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 20:57:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 20:57:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 20:57:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 20:57:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 20:57:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 20:57:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 20:57:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 20:57:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-11-21 20:57:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-11-21 20:57:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:57:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 20:57:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 20:57:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 20:57:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 20:57:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 20:57:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 20:57:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 20:57:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 20:57:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 20:57:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 20:57:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 20:57:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 20:57:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 20:57:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 20:57:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 20:57:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 20:57:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 20:57:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 20:57:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 20:57:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 20:57:01,008 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 20:57:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 20:57:01,008 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 20:57:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 20:57:01,009 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 20:57:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:57:01,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:57:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 20:57:01,009 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 20:57:01,224 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:57:01,228 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:57:02,636 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:57:03,835 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:57:03,835 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 20:57:03,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:03 BoogieIcfgContainer [2023-11-21 20:57:03,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:57:03,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:57:03,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:57:03,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:57:03,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:56:59" (1/3) ... [2023-11-21 20:57:03,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682050ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:57:03, skipping insertion in model container [2023-11-21 20:57:03,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:57:00" (2/3) ... [2023-11-21 20:57:03,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682050ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:57:03, skipping insertion in model container [2023-11-21 20:57:03,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:57:03" (3/3) ... [2023-11-21 20:57:03,854 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2023-11-21 20:57:03,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:57:03,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 20:57:03,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:57:03,974 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;@64c4944a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:57:03,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 20:57:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 368 states, 249 states have (on average 1.6024096385542168) internal successors, (399), 270 states have internal predecessors, (399), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-21 20:57:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-21 20:57:04,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:57:04,028 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 20:57:04,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:57:04,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash -89679758, now seen corresponding path program 1 times [2023-11-21 20:57:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:04,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032530690] [2023-11-21 20:57:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:57:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 20:57:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 20:57:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 20:57:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 20:57:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 20:57:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 20:57:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 20:57:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032530690] [2023-11-21 20:57:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032530690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:05,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:57:05,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745602075] [2023-11-21 20:57:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:05,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:57:05,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:57:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:57:05,785 INFO L87 Difference]: Start difference. First operand has 368 states, 249 states have (on average 1.6024096385542168) internal successors, (399), 270 states have internal predecessors, (399), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-21 20:57:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:57:09,259 INFO L93 Difference]: Finished difference Result 495 states and 800 transitions. [2023-11-21 20:57:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:57:09,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 76 [2023-11-21 20:57:09,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:57:09,291 INFO L225 Difference]: With dead ends: 495 [2023-11-21 20:57:09,297 INFO L226 Difference]: Without dead ends: 473 [2023-11-21 20:57:09,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:57:09,306 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1010 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 20:57:09,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 499 Invalid, 989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [448 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-21 20:57:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-21 20:57:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 364. [2023-11-21 20:57:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 247 states have (on average 1.591093117408907) internal successors, (393), 266 states have internal predecessors, (393), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-21 20:57:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 576 transitions. [2023-11-21 20:57:09,517 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 576 transitions. Word has length 76 [2023-11-21 20:57:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:57:09,518 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 576 transitions. [2023-11-21 20:57:09,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-21 20:57:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 576 transitions. [2023-11-21 20:57:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-21 20:57:09,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:57:09,528 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 20:57:09,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:57:09,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:57:09,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2005245585, now seen corresponding path program 1 times [2023-11-21 20:57:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317274792] [2023-11-21 20:57:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:57:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 20:57:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 20:57:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 20:57:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 20:57:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 20:57:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 20:57:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 20:57:11,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:57:11,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317274792] [2023-11-21 20:57:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317274792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:57:11,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:57:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-21 20:57:11,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967054853] [2023-11-21 20:57:11,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:57:11,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-21 20:57:11,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:57:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-21 20:57:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-21 20:57:11,578 INFO L87 Difference]: Start difference. First operand 364 states and 576 transitions. Second operand has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 6 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-21 20:57:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:57:42,342 INFO L93 Difference]: Finished difference Result 2363 states and 3910 transitions. [2023-11-21 20:57:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-21 20:57:42,343 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 6 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 77 [2023-11-21 20:57:42,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:57:42,368 INFO L225 Difference]: With dead ends: 2363 [2023-11-21 20:57:42,369 INFO L226 Difference]: Without dead ends: 2015 [2023-11-21 20:57:42,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=1064, Invalid=6768, Unknown=0, NotChecked=0, Total=7832 [2023-11-21 20:57:42,385 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 6774 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 8559 mSolverCounterSat, 3972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6833 SdHoareTripleChecker+Valid, 4981 SdHoareTripleChecker+Invalid, 12531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3972 IncrementalHoareTripleChecker+Valid, 8559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-11-21 20:57:42,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6833 Valid, 4981 Invalid, 12531 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3972 Valid, 8559 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2023-11-21 20:57:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-11-21 20:57:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1183. [2023-11-21 20:57:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 814 states have (on average 1.511056511056511) internal successors, (1230), 867 states have internal predecessors, (1230), 291 states have call successors, (291), 74 states have call predecessors, (291), 77 states have return successors, (307), 278 states have call predecessors, (307), 286 states have call successors, (307) [2023-11-21 20:57:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1828 transitions. [2023-11-21 20:57:42,834 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1828 transitions. Word has length 77 [2023-11-21 20:57:42,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:57:42,835 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1828 transitions. [2023-11-21 20:57:42,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 6 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-21 20:57:42,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1828 transitions. [2023-11-21 20:57:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-21 20:57:42,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:57:42,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:57:42,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:57:42,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:57:42,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:57:42,841 INFO L85 PathProgramCache]: Analyzing trace with hash -15027087, now seen corresponding path program 1 times [2023-11-21 20:57:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:57:42,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390454497] [2023-11-21 20:57:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:57:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:57:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 20:57:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 20:57:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 20:57:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:44,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:57:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 20:57:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:57:45,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 20:57:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat