./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/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_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/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_a562a42d-6307-43a8-a341-903f5b8c72ec/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 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:04:30,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:04:30,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:04:30,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:04:30,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:04:30,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:04:30,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:04:30,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:04:30,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:04:30,925 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:04:30,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:04:30,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:04:30,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:04:30,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:04:30,929 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:04:30,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:04:30,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:04:30,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:04:30,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:04:30,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:04:30,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:04:30,934 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:04:30,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:04:30,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:04:30,936 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:04:30,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:04:30,937 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:04:30,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:04:30,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:04:30,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:04:30,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:04:30,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:04:30,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:04:30,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:04:30,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:04:30,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:04:30,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:04:30,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:04:30,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:04:30,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:04:30,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:04:30,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:04:30,945 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_a562a42d-6307-43a8-a341-903f5b8c72ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 [2023-11-21 21:04:31,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:04:31,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:04:31,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:04:31,231 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:04:31,232 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:04:31,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2023-11-21 21:04:34,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:04:34,867 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:04:34,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2023-11-21 21:04:34,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/data/bc26b2686/fdf405edc75d48389a5e84a5f64b6566/FLAG1ab2b1db7 [2023-11-21 21:04:34,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/data/bc26b2686/fdf405edc75d48389a5e84a5f64b6566 [2023-11-21 21:04:34,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:04:34,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:04:34,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:04:34,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:04:34,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:04:34,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae38073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34, skipping insertion in model container [2023-11-21 21:04:34,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:35,016 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:04:35,238 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_a562a42d-6307-43a8-a341-903f5b8c72ec/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2023-11-21 21:04:35,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:04:35,725 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:04:35,736 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-11-21 21:04:35,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [150] [2023-11-21 21:04:35,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2023-11-21 21:04:35,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [525] [2023-11-21 21:04:35,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [563] [2023-11-21 21:04:35,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [752] [2023-11-21 21:04:35,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1102] [2023-11-21 21:04:35,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1769] [2023-11-21 21:04:35,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1784] [2023-11-21 21:04:35,740 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1904] [2023-11-21 21:04:35,747 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_a562a42d-6307-43a8-a341-903f5b8c72ec/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2023-11-21 21:04:35,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:04:35,876 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:04:35,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35 WrapperNode [2023-11-21 21:04:35,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:04:35,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:04:35,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:04:35,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:04:35,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,984 INFO L138 Inliner]: procedures = 92, calls = 351, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 904 [2023-11-21 21:04:35,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:04:35,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:04:35,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:04:35,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:04:36,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,020 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,071 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 21:04:36,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:04:36,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:04:36,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:04:36,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:04:36,156 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:36,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:04:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:04:36,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:04:36,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:04:36,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:04:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-21 21:04:36,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-21 21:04:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 21:04:36,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 21:04:36,301 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 21:04:36,301 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 21:04:36,301 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 21:04:36,302 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 21:04:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-21 21:04:36,303 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-21 21:04:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 21:04:36,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 21:04:36,305 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 21:04:36,305 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 21:04:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 21:04:36,307 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 21:04:36,307 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 21:04:36,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 21:04:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 21:04:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 21:04:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 21:04:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 21:04:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 21:04:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 21:04:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-21 21:04:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-21 21:04:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-21 21:04:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-21 21:04:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 21:04:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 21:04:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-21 21:04:36,361 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-21 21:04:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 21:04:36,361 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 21:04:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 21:04:36,361 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 21:04:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 21:04:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 21:04:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 21:04:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 21:04:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:04:36,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 21:04:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 21:04:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 21:04:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 21:04:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 21:04:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 21:04:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 21:04:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 21:04:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 21:04:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 21:04:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 21:04:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 21:04:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 21:04:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 21:04:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 21:04:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 21:04:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 21:04:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 21:04:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 21:04:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-21 21:04:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-21 21:04:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 21:04:36,366 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 21:04:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 21:04:36,366 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 21:04:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 21:04:36,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 21:04:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-11-21 21:04:36,367 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-11-21 21:04:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-11-21 21:04:36,367 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-11-21 21:04:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:04:36,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:04:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 21:04:36,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 21:04:36,668 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:04:36,673 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:04:37,942 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:04:39,177 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:04:39,177 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:04:39,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:39 BoogieIcfgContainer [2023-11-21 21:04:39,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:04:39,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:04:39,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:04:39,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:04:39,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:04:34" (1/3) ... [2023-11-21 21:04:39,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686422ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:39, skipping insertion in model container [2023-11-21 21:04:39,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (2/3) ... [2023-11-21 21:04:39,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686422ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:39, skipping insertion in model container [2023-11-21 21:04:39,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:39" (3/3) ... [2023-11-21 21:04:39,196 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2023-11-21 21:04:39,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:04:39,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:04:39,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:04:39,322 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;@46c1655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:04:39,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:04:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 411 states, 274 states have (on average 1.572992700729927) internal successors, (431), 294 states have internal predecessors, (431), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-21 21:04:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 21:04:39,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:39,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 21:04:39,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:39,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1525910135, now seen corresponding path program 1 times [2023-11-21 21:04:39,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:39,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192274971] [2023-11-21 21:04:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:04:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:04:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:04:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:04:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:04:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:04:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 21:04:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-21 21:04:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:04:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192274971] [2023-11-21 21:04:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192274971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:04:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106155569] [2023-11-21 21:04:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:41,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:04:41,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:04:41,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:04:41,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:04:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:41,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:04:41,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:04:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:04:41,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:04:41,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106155569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:04:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-21 21:04:41,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636349377] [2023-11-21 21:04:41,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:41,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:04:41,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:04:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:04:41,817 INFO L87 Difference]: Start difference. First operand has 411 states, 274 states have (on average 1.572992700729927) internal successors, (431), 294 states have internal predecessors, (431), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:04:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:42,184 INFO L93 Difference]: Finished difference Result 1156 states and 1845 transitions. [2023-11-21 21:04:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:42,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2023-11-21 21:04:42,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:42,213 INFO L225 Difference]: With dead ends: 1156 [2023-11-21 21:04:42,214 INFO L226 Difference]: Without dead ends: 747 [2023-11-21 21:04:42,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:04:42,228 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 608 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:42,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1126 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:04:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-21 21:04:42,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 735. [2023-11-21 21:04:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 495 states have (on average 1.5656565656565657) internal successors, (775), 530 states have internal predecessors, (775), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 183 states have call predecessors, (193), 188 states have call successors, (193) [2023-11-21 21:04:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1159 transitions. [2023-11-21 21:04:42,370 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1159 transitions. Word has length 49 [2023-11-21 21:04:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:42,371 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1159 transitions. [2023-11-21 21:04:42,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:04:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1159 transitions. [2023-11-21 21:04:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 21:04:42,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:42,382 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 21:04:42,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:04:42,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:04:42,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:42,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash 58827874, now seen corresponding path program 1 times [2023-11-21 21:04:42,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:42,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53169983] [2023-11-21 21:04:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:42,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:04:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:04:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:04:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:04:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:04:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:04:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 21:04:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 21:04:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-21 21:04:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:04:43,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53169983] [2023-11-21 21:04:43,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53169983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:43,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:43,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:04:43,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844753857] [2023-11-21 21:04:43,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:43,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:04:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:43,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:04:43,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:43,711 INFO L87 Difference]: Start difference. First operand 735 states and 1159 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:04:51,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:04:51,093 INFO L93 Difference]: Finished difference Result 2539 states and 4092 transitions. [2023-11-21 21:04:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:04:51,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2023-11-21 21:04:51,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:04:51,131 INFO L225 Difference]: With dead ends: 2539 [2023-11-21 21:04:51,132 INFO L226 Difference]: Without dead ends: 1816 [2023-11-21 21:04:51,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:04:51,139 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2042 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:04:51,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 833 Invalid, 1764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [730 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-21 21:04:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2023-11-21 21:04:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1390. [2023-11-21 21:04:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 967 states have (on average 1.5822130299896588) internal successors, (1530), 1021 states have internal predecessors, (1530), 335 states have call successors, (335), 84 states have call predecessors, (335), 87 states have return successors, (366), 312 states have call predecessors, (366), 331 states have call successors, (366) [2023-11-21 21:04:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2231 transitions. [2023-11-21 21:04:51,685 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2231 transitions. Word has length 50 [2023-11-21 21:04:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:04:51,686 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 2231 transitions. [2023-11-21 21:04:51,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:04:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2231 transitions. [2023-11-21 21:04:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-21 21:04:51,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:04:51,701 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:51,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:04:51,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:04:51,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash 711459291, now seen corresponding path program 1 times [2023-11-21 21:04:51,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:51,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038306591] [2023-11-21 21:04:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:04:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:04:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:04:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:04:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:04:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:04:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 21:04:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 21:04:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:53,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:04:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:04:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 21:04:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:53,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:04:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 21:04:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:53,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 21:04:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:04:53,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:53,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038306591] [2023-11-21 21:04:53,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038306591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:53,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:53,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:04:53,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133931283] [2023-11-21 21:04:53,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:53,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:04:53,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:04:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:04:53,117 INFO L87 Difference]: Start difference. First operand 1390 states and 2231 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 21:05:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:05:01,486 INFO L93 Difference]: Finished difference Result 3905 states and 6342 transitions. [2023-11-21 21:05:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 21:05:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 81 [2023-11-21 21:05:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:05:01,522 INFO L225 Difference]: With dead ends: 3905 [2023-11-21 21:05:01,522 INFO L226 Difference]: Without dead ends: 2527 [2023-11-21 21:05:01,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-21 21:05:01,541 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1705 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-21 21:05:01,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 1080 Invalid, 2410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [846 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-21 21:05:01,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2023-11-21 21:05:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1787. [2023-11-21 21:05:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1239 states have (on average 1.5415657788539145) internal successors, (1910), 1295 states have internal predecessors, (1910), 424 states have call successors, (424), 114 states have call predecessors, (424), 123 states have return successors, (510), 403 states have call predecessors, (510), 418 states have call successors, (510) [2023-11-21 21:05:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2844 transitions. [2023-11-21 21:05:02,309 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2844 transitions. Word has length 81 [2023-11-21 21:05:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:05:02,312 INFO L495 AbstractCegarLoop]: Abstraction has 1787 states and 2844 transitions. [2023-11-21 21:05:02,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 21:05:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2844 transitions. [2023-11-21 21:05:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-21 21:05:02,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:02,321 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:05:02,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:05:02,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:05:02,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:02,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2019926485, now seen corresponding path program 1 times [2023-11-21 21:05:02,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:02,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660725508] [2023-11-21 21:05:02,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:02,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:05:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:05:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:05:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 21:05:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 21:05:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 21:05:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 21:05:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 21:05:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 21:05:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:05:03,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:03,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660725508] [2023-11-21 21:05:03,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660725508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:03,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:03,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 21:05:03,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633479124] [2023-11-21 21:05:03,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:03,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:05:03,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:03,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:05:03,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:05:03,901 INFO L87 Difference]: Start difference. First operand 1787 states and 2844 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 21:05:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:05:15,782 INFO L93 Difference]: Finished difference Result 5207 states and 8612 transitions. [2023-11-21 21:05:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 21:05:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 82 [2023-11-21 21:05:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:05:15,816 INFO L225 Difference]: With dead ends: 5207 [2023-11-21 21:05:15,817 INFO L226 Difference]: Without dead ends: 3432 [2023-11-21 21:05:15,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-11-21 21:05:15,833 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 3680 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 1619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 4414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1619 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:05:15,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3778 Valid, 1826 Invalid, 4414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1619 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-21 21:05:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2023-11-21 21:05:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2624. [2023-11-21 21:05:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 1826 states have (on average 1.5323110624315444) internal successors, (2798), 1915 states have internal predecessors, (2798), 612 states have call successors, (612), 168 states have call predecessors, (612), 185 states have return successors, (811), 578 states have call predecessors, (811), 604 states have call successors, (811) [2023-11-21 21:05:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 4221 transitions. [2023-11-21 21:05:17,014 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 4221 transitions. Word has length 82 [2023-11-21 21:05:17,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:05:17,014 INFO L495 AbstractCegarLoop]: Abstraction has 2624 states and 4221 transitions. [2023-11-21 21:05:17,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 21:05:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 4221 transitions. [2023-11-21 21:05:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-21 21:05:17,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:17,020 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:05:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:05:17,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:05:17,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:17,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1887252975, now seen corresponding path program 1 times [2023-11-21 21:05:17,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:17,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035073210] [2023-11-21 21:05:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:17,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:17,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:05:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:05:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:05:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 21:05:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:05:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:18,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 21:05:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 21:05:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 21:05:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 21:05:18,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035073210] [2023-11-21 21:05:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035073210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:05:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844105817] [2023-11-21 21:05:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:18,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:05:18,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:05:18,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:05:18,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a562a42d-6307-43a8-a341-903f5b8c72ec/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process