./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1 --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 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:13:01,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:13:01,481 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:13:01,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:13:01,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:13:01,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:13:01,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:13:01,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:13:01,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:13:01,507 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:13:01,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:13:01,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:13:01,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:13:01,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:13:01,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:13:01,509 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:13:01,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:01,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:01,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:13:01,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:13:01,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:13:01,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:13:01,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:13:01,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:13:01,511 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1 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 -> 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa [2024-12-02 07:13:01,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:13:01,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:13:01,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:13:01,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:13:01,727 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:13:01,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-12-02 07:13:04,357 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/data/fb223ac8b/047bf0dfaca84e60871724ba64151bbc/FLAG64162570c [2024-12-02 07:13:04,561 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:13:04,562 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-12-02 07:13:04,569 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/data/fb223ac8b/047bf0dfaca84e60871724ba64151bbc/FLAG64162570c [2024-12-02 07:13:04,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/data/fb223ac8b/047bf0dfaca84e60871724ba64151bbc [2024-12-02 07:13:04,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:13:04,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:13:04,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:13:04,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:13:04,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:13:04,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c7e7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04, skipping insertion in model container [2024-12-02 07:13:04,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,604 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:13:04,734 WARN L250 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_cca34cc3-3035-48d0-8c60-3d9f771b0b11/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-12-02 07:13:04,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:13:04,746 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:13:04,758 WARN L250 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_cca34cc3-3035-48d0-8c60-3d9f771b0b11/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-12-02 07:13:04,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:13:04,773 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:13:04,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04 WrapperNode [2024-12-02 07:13:04,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:13:04,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:13:04,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:13:04,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:13:04,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,801 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2024-12-02 07:13:04,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:13:04,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:13:04,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:13:04,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:13:04,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,823 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2024-12-02 07:13:04,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,827 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:13:04,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:13:04,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:13:04,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:13:04,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (1/1) ... [2024-12-02 07:13:04,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:13:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:13:04,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:13:04,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_19_to_19_0 [2024-12-02 07:13:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_19_to_19_0 [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:13:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:13:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:13:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:13:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 07:13:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 07:13:04,952 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:13:04,954 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:13:05,044 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-12-02 07:13:05,044 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:13:05,050 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:13:05,051 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 07:13:05,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:05 BoogieIcfgContainer [2024-12-02 07:13:05,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:13:05,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:13:05,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:13:05,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:13:05,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:13:04" (1/3) ... [2024-12-02 07:13:05,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf14ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:13:05, skipping insertion in model container [2024-12-02 07:13:05,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:13:04" (2/3) ... [2024-12-02 07:13:05,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf14ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:13:05, skipping insertion in model container [2024-12-02 07:13:05,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:05" (3/3) ... [2024-12-02 07:13:05,060 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_nested_1.c [2024-12-02 07:13:05,072 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:13:05,074 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_nested_1.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 07:13:05,122 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:13:05,133 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;@7fe226ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:13:05,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:13:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 07:13:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-02 07:13:05,143 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:05,143 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:05,144 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:05,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash -238646374, now seen corresponding path program 1 times [2024-12-02 07:13:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470450715] [2024-12-02 07:13:05,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:05,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:13:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:13:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470450715] [2024-12-02 07:13:05,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470450715] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:13:05,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:13:05,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:13:05,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499650613] [2024-12-02 07:13:05,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:13:05,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:13:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:05,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:13:05,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:13:05,519 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 07:13:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:05,584 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-12-02 07:13:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:13:05,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-12-02 07:13:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:05,592 INFO L225 Difference]: With dead ends: 26 [2024-12-02 07:13:05,592 INFO L226 Difference]: Without dead ends: 14 [2024-12-02 07:13:05,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:13:05,598 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:13:05,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:13:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-12-02 07:13:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-12-02 07:13:05,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 07:13:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-12-02 07:13:05,627 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-12-02 07:13:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:05,628 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-12-02 07:13:05,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 07:13:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-12-02 07:13:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 07:13:05,629 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:05,629 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:05,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:13:05,630 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:05,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1470993118, now seen corresponding path program 1 times [2024-12-02 07:13:05,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:05,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866373789] [2024-12-02 07:13:05,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:05,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:13:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:13:05,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866373789] [2024-12-02 07:13:05,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866373789] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:13:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169872926] [2024-12-02 07:13:05,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:05,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:05,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:13:05,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:13:05,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:13:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:13:06,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 07:13:06,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:13:06,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 07:13:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:13:06,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:13:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:13:06,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169872926] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:13:06,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:13:06,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2024-12-02 07:13:06,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985467258] [2024-12-02 07:13:06,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:13:06,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 07:13:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:06,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 07:13:06,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:13:06,618 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-12-02 07:13:06,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:06,775 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-12-02 07:13:06,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:13:06,776 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 15 [2024-12-02 07:13:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:06,777 INFO L225 Difference]: With dead ends: 22 [2024-12-02 07:13:06,777 INFO L226 Difference]: Without dead ends: 18 [2024-12-02 07:13:06,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:13:06,778 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:13:06,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 71 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:13:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-12-02 07:13:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-12-02 07:13:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 07:13:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-12-02 07:13:06,783 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2024-12-02 07:13:06,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:06,784 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-12-02 07:13:06,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-12-02 07:13:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-12-02 07:13:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 07:13:06,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:06,785 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:06,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:13:06,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:06,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:06,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash -939005732, now seen corresponding path program 2 times [2024-12-02 07:13:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:06,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853314339] [2024-12-02 07:13:06,986 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:13:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:06,999 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:13:06,999 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:13:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 07:13:07,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:07,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853314339] [2024-12-02 07:13:07,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853314339] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:13:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890854081] [2024-12-02 07:13:07,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:13:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:13:07,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:13:07,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:13:07,552 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:13:07,553 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:13:07,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 07:13:07,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:13:07,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 07:13:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 07:13:07,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:13:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:13:08,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890854081] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:13:08,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:13:08,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 18] total 32 [2024-12-02 07:13:08,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738580261] [2024-12-02 07:13:08,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:13:08,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:13:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:08,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:13:08,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:13:08,821 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-12-02 07:13:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:09,049 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-12-02 07:13:09,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:13:09,050 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 25 [2024-12-02 07:13:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:09,051 INFO L225 Difference]: With dead ends: 26 [2024-12-02 07:13:09,051 INFO L226 Difference]: Without dead ends: 22 [2024-12-02 07:13:09,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 07:13:09,052 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:13:09,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 108 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:13:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-12-02 07:13:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-12-02 07:13:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:13:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-12-02 07:13:09,058 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 25 [2024-12-02 07:13:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:09,058 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-12-02 07:13:09,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-12-02 07:13:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-12-02 07:13:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 07:13:09,060 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:09,060 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:09,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:13:09,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:09,260 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:09,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash -797696106, now seen corresponding path program 3 times [2024-12-02 07:13:09,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868203211] [2024-12-02 07:13:09,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 07:13:09,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:09,280 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 07:13:09,281 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:13:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 07:13:09,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:09,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868203211] [2024-12-02 07:13:09,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868203211] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:13:09,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470226654] [2024-12-02 07:13:09,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 07:13:09,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:09,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:13:09,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:13:09,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:13:09,646 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 07:13:09,646 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:13:09,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-12-02 07:13:09,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:13:09,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 07:13:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 07:13:10,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:13:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:13:11,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470226654] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:13:11,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:13:11,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 26] total 45 [2024-12-02 07:13:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563201993] [2024-12-02 07:13:11,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:13:11,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 07:13:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:11,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 07:13:11,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1680, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 07:13:11,897 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 45 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 8 states have call predecessors, (11), 14 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2024-12-02 07:13:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:12,297 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-12-02 07:13:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:13:12,297 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 8 states have call predecessors, (11), 14 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 35 [2024-12-02 07:13:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:12,298 INFO L225 Difference]: With dead ends: 26 [2024-12-02 07:13:12,298 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 07:13:12,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=473, Invalid=2389, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 07:13:12,300 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:13:12,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 132 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:13:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 07:13:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 07:13:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:13:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 07:13:12,301 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2024-12-02 07:13:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:12,301 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 07:13:12,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 8 states have call predecessors, (11), 14 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2024-12-02 07:13:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 07:13:12,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 07:13:12,304 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 07:13:12,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:13:12,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:12,507 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1] [2024-12-02 07:13:12,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 07:13:12,641 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:13:12,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:13:12 BoogieIcfgContainer [2024-12-02 07:13:12,645 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:13:12,646 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:13:12,646 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:13:12,646 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:13:12,646 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:13:05" (3/4) ... [2024-12-02 07:13:12,648 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 07:13:12,651 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_19_to_19_0 [2024-12-02 07:13:12,653 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-12-02 07:13:12,653 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-02 07:13:12,653 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 07:13:12,653 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 07:13:12,711 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 07:13:12,711 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 07:13:12,711 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:13:12,712 INFO L158 Benchmark]: Toolchain (without parser) took 8128.17ms. Allocated memory is still 142.6MB. Free memory was 118.1MB in the beginning and 74.1MB in the end (delta: 44.1MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2024-12-02 07:13:12,712 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:12,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.82ms. Allocated memory is still 142.6MB. Free memory was 118.1MB in the beginning and 107.7MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:13:12,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.90ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 106.6MB in the end (delta: 826.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:12,713 INFO L158 Benchmark]: Boogie Preprocessor took 29.80ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 105.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:12,713 INFO L158 Benchmark]: RCFGBuilder took 218.64ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 95.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:13:12,713 INFO L158 Benchmark]: TraceAbstraction took 7592.20ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 78.0MB in the end (delta: 17.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2024-12-02 07:13:12,713 INFO L158 Benchmark]: Witness Printer took 65.82ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 74.1MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:13:12,714 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.82ms. Allocated memory is still 142.6MB. Free memory was 118.1MB in the beginning and 107.7MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.90ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 106.6MB in the end (delta: 826.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.80ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 105.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 218.64ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 95.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7592.20ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 78.0MB in the end (delta: 17.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 65.82ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 74.1MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 349 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 471 IncrementalHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 45 mSDtfsCounter, 471 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1295 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 2214 SizeOfPredicates, 33 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 126/303 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 07:13:12,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca34cc3-3035-48d0-8c60-3d9f771b0b11/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE