./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU --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 a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:04:31,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:04:31,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:04:31,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:04:31,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:04:31,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:04:31,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:04:31,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:04:31,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:04:31,748 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:04:31,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:04:31,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:04:31,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:04:31,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:04:31,751 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:04:31,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:04:31,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:04:31,754 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:04:31,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:04:31,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:04:31,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:04:31,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:04:31,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:04:31,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:04:31,761 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:04:31,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:04:31,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:04:31,761 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:04:31,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:04:31,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:04:31,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:04:31,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:04:31,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:31,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:04:31,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:04:31,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:04:31,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:04:31,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:04:31,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:04:31,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:04:31,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:04:31,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:04:31,767 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_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2024-10-31 22:04:32,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:04:32,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:04:32,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:04:32,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:04:32,129 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:04:32,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c Unable to find full path for "g++" [2024-10-31 22:04:34,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:04:34,435 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:04:34,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2024-10-31 22:04:34,472 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/data/ff1a037c5/2d779d475f8843bfa986d79e0070a433/FLAG1517df948 [2024-10-31 22:04:34,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/data/ff1a037c5/2d779d475f8843bfa986d79e0070a433 [2024-10-31 22:04:34,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:04:34,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:04:34,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:34,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:04:34,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:04:34,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:34" (1/1) ... [2024-10-31 22:04:34,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eae38c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:34, skipping insertion in model container [2024-10-31 22:04:34,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:34" (1/1) ... [2024-10-31 22:04:34,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:04:35,093 WARN L251 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_47db42e7-9db8-4790-8b2b-e4d1654cb415/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2024-10-31 22:04:35,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:35,513 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:04:35,525 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-10-31 22:04:35,527 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [716] [2024-10-31 22:04:35,527 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [725] [2024-10-31 22:04:35,528 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [739] [2024-10-31 22:04:35,529 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2285] [2024-10-31 22:04:35,529 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2651] [2024-10-31 22:04:35,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3008] [2024-10-31 22:04:35,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3126] [2024-10-31 22:04:35,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [3217] [2024-10-31 22:04:35,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3398] [2024-10-31 22:04:35,568 WARN L251 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_47db42e7-9db8-4790-8b2b-e4d1654cb415/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2024-10-31 22:04:35,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:35,759 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:04:35,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35 WrapperNode [2024-10-31 22:04:35,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:35,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:35,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:04:35,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:04:35,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:35,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:35,865 INFO L138 Inliner]: procedures = 93, calls = 341, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 904 [2024-10-31 22:04:35,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:35,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:04:35,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:04:35,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:04:35,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:35,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:35,893 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:35,939 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-10-31 22:04:35,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:35,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:35,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:36,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:36,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:36,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:36,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:04:36,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:04:36,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:04:36,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:04:36,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (1/1) ... [2024-10-31 22:04:36,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:36,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:36,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:04:36,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47db42e7-9db8-4790-8b2b-e4d1654cb415/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:04:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:04:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-31 22:04:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-31 22:04:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-31 22:04:36,175 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-31 22:04:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-31 22:04:36,176 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-31 22:04:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-31 22:04:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-31 22:04:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-31 22:04:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-31 22:04:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-10-31 22:04:36,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-10-31 22:04:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-31 22:04:36,179 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-31 22:04:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-31 22:04:36,180 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-31 22:04:36,180 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-31 22:04:36,180 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-31 22:04:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-31 22:04:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-31 22:04:36,181 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-31 22:04:36,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-31 22:04:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-31 22:04:36,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-31 22:04:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-31 22:04:36,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-31 22:04:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-10-31 22:04:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-10-31 22:04:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-31 22:04:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-31 22:04:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-31 22:04:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-31 22:04:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-31 22:04:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-31 22:04:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-31 22:04:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-31 22:04:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-31 22:04:36,186 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-31 22:04:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:04:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:04:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:04:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:04:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:04:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-31 22:04:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-31 22:04:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-31 22:04:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-31 22:04:36,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-31 22:04:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-10-31 22:04:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-10-31 22:04:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-31 22:04:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-31 22:04:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-31 22:04:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-31 22:04:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-31 22:04:36,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-31 22:04:36,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:04:36,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:04:36,190 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-31 22:04:36,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-31 22:04:36,464 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:04:36,468 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:04:38,189 INFO L? ?]: Removed 460 outVars from TransFormulas that were not future-live. [2024-10-31 22:04:38,189 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:04:38,232 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:04:38,236 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:04:38,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:38 BoogieIcfgContainer [2024-10-31 22:04:38,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:04:38,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:04:38,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:04:38,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:04:38,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:04:34" (1/3) ... [2024-10-31 22:04:38,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c4ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:38, skipping insertion in model container [2024-10-31 22:04:38,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:35" (2/3) ... [2024-10-31 22:04:38,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0c4ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:38, skipping insertion in model container [2024-10-31 22:04:38,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:38" (3/3) ... [2024-10-31 22:04:38,252 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2024-10-31 22:04:38,275 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:04:38,275 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:04:38,380 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:38,387 INFO L333 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, 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;@691e8b7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:38,387 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:04:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2024-10-31 22:04:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-31 22:04:38,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:38,430 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:38,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:38,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2058097453, now seen corresponding path program 1 times [2024-10-31 22:04:38,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:38,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93599184] [2024-10-31 22:04:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:38,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 22:04:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-31 22:04:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:04:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 22:04:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:04:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-31 22:04:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:04:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:40,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:40,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93599184] [2024-10-31 22:04:40,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93599184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:40,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:40,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-31 22:04:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409055913] [2024-10-31 22:04:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:40,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:04:40,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:04:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:04:40,726 INFO L87 Difference]: Start difference. First operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-31 22:04:55,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:55,240 INFO L93 Difference]: Finished difference Result 1394 states and 2368 transitions. [2024-10-31 22:04:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:04:55,244 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-10-31 22:04:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:55,279 INFO L225 Difference]: With dead ends: 1394 [2024-10-31 22:04:55,280 INFO L226 Difference]: Without dead ends: 834 [2024-10-31 22:04:55,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:04:55,299 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 1463 mSDsluCounter, 4188 mSDsCounter, 0 mSdLazyCounter, 7894 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 4674 SdHoareTripleChecker+Invalid, 8265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 7894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:55,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 4674 Invalid, 8265 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [371 Valid, 7894 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2024-10-31 22:04:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-10-31 22:04:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 571. [2024-10-31 22:04:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 450 states have (on average 1.6844444444444444) internal successors, (758), 469 states have internal predecessors, (758), 95 states have call successors, (95), 24 states have call predecessors, (95), 25 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2024-10-31 22:04:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 948 transitions. [2024-10-31 22:04:55,617 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 948 transitions. Word has length 88 [2024-10-31 22:04:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:55,618 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 948 transitions. [2024-10-31 22:04:55,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-31 22:04:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 948 transitions. [2024-10-31 22:04:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-31 22:04:55,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:55,628 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:55,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:04:55,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:55,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1255703864, now seen corresponding path program 1 times [2024-10-31 22:04:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:55,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644199316] [2024-10-31 22:04:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:55,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:55,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:55,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:04:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:04:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:04:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:04:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 22:04:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-31 22:04:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:04:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-31 22:04:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644199316] [2024-10-31 22:04:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644199316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:56,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:56,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:04:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602488386] [2024-10-31 22:04:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:56,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:04:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:56,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:04:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:04:56,717 INFO L87 Difference]: Start difference. First operand 571 states and 948 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)