./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-invariants/recursified_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_loop-invariants/recursified_const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df68cc134d4c89196adaa50333a41be4199690de58eaf3e6fbecc9a5100092fe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:29:27,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:29:27,339 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:29:27,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:29:27,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:29:27,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:29:27,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:29:27,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:29:27,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:29:27,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:29:27,425 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:29:27,426 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:29:27,427 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:29:27,428 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:29:27,429 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:29:27,429 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:29:27,430 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:29:27,430 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:29:27,431 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:29:27,431 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:29:27,431 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:29:27,432 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:29:27,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:29:27,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:29:27,434 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:29:27,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:29:27,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:29:27,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:29:27,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:29:27,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:29:27,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:29:27,438 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:29:27,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:29:27,438 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:29:27,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:29:27,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:29:27,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:29:27,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:27,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:29:27,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:29:27,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:29:27,441 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:29:27,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:29:27,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:29:27,442 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:29:27,442 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:29:27,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:29:27,443 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df68cc134d4c89196adaa50333a41be4199690de58eaf3e6fbecc9a5100092fe [2023-11-23 21:29:27,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:29:27,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:29:27,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:29:27,834 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:29:27,835 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:29:27,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/recursified_loop-invariants/recursified_const.c [2023-11-23 21:29:30,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:31,115 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:31,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/sv-benchmarks/c/recursified_loop-invariants/recursified_const.c [2023-11-23 21:29:31,123 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/data/df132c7fe/5668a75cb0ad447f93bd7ce7d5a8ad07/FLAG1091dfec2 [2023-11-23 21:29:31,467 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/data/df132c7fe/5668a75cb0ad447f93bd7ce7d5a8ad07 [2023-11-23 21:29:31,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:31,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:31,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:31,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:31,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:31,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64101c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31, skipping insertion in model container [2023-11-23 21:29:31,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,508 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:31,716 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/sv-benchmarks/c/recursified_loop-invariants/recursified_const.c[979,992] [2023-11-23 21:29:31,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:31,754 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:31,772 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/sv-benchmarks/c/recursified_loop-invariants/recursified_const.c[979,992] [2023-11-23 21:29:31,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:31,800 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:31,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31 WrapperNode [2023-11-23 21:29:31,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:31,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:31,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:31,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:31,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,852 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-11-23 21:29:31,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:31,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:31,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:31,854 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:31,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:31,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:31,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:31,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:31,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (1/1) ... [2023-11-23 21:29:31,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:31,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:31,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:31,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_18_0 [2023-11-23 21:29:32,010 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_18_0 [2023-11-23 21:29:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:29:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:29:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:29:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:29:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:29:32,094 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:32,097 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:32,250 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:32,301 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:32,303 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:29:32,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:32 BoogieIcfgContainer [2023-11-23 21:29:32,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:32,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:32,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:32,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:32,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:31" (1/3) ... [2023-11-23 21:29:32,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186d81de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:32, skipping insertion in model container [2023-11-23 21:29:32,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:31" (2/3) ... [2023-11-23 21:29:32,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186d81de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:32, skipping insertion in model container [2023-11-23 21:29:32,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:32" (3/3) ... [2023-11-23 21:29:32,320 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_const.c [2023-11-23 21:29:32,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:32,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:29:32,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:32,414 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@5440466, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:32,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:29:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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) [2023-11-23 21:29:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:29:32,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:32,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:32,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_13_to_18_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_13_to_18_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:32,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -36640930, now seen corresponding path program 1 times [2023-11-23 21:29:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:32,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469563138] [2023-11-23 21:29:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:29:33,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:33,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469563138] [2023-11-23 21:29:33,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469563138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:33,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:33,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:29:33,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957704511] [2023-11-23 21:29:33,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:33,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:29:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:33,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:29:33,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:29:33,287 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:29:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:33,399 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2023-11-23 21:29:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:29:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:29:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:33,408 INFO L225 Difference]: With dead ends: 29 [2023-11-23 21:29:33,409 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:29:33,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:29:33,420 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:33,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:29:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:29:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:29:33,447 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) [2023-11-23 21:29:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:29:33,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2023-11-23 21:29:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:33,450 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:29:33,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:29:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:29:33,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:29:33,454 INFO L805 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_13_to_18_0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:29:33,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:29:33,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:29:33,493 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 29) no Hoare annotation was computed. [2023-11-23 21:29:33,493 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 34) no Hoare annotation was computed. [2023-11-23 21:29:33,494 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 21 36) no Hoare annotation was computed. [2023-11-23 21:29:33,494 INFO L899 garLoopResultBuilder]: For program point L50(lines 50 56) no Hoare annotation was computed. [2023-11-23 21:29:33,495 INFO L895 garLoopResultBuilder]: At program point L50-2(lines 50 56) the Hoare annotation is: (or (and (= (select (select |#memory_int| |func_to_recursive_line_13_to_18_0_~s#1.base|) |func_to_recursive_line_13_to_18_0_~s#1.offset|) 0) (= (select (select |#memory_int| |func_to_recursive_line_13_to_18_0_#in~s#1.base|) |func_to_recursive_line_13_to_18_0_#in~s#1.offset|) 0)) (not (= (select (select |old(#memory_int)| |func_to_recursive_line_13_to_18_0_#in~s#1.base|) |func_to_recursive_line_13_to_18_0_#in~s#1.offset|) 0))) [2023-11-23 21:29:33,495 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_13_to_18_0Err0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2023-11-23 21:29:33,496 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 38 63) the Hoare annotation is: (or (= (select (select |#memory_int| |func_to_recursive_line_13_to_18_0_#in~s#1.base|) |func_to_recursive_line_13_to_18_0_#in~s#1.offset|) 0) (not (= (select (select |old(#memory_int)| |func_to_recursive_line_13_to_18_0_#in~s#1.base|) |func_to_recursive_line_13_to_18_0_#in~s#1.offset|) 0))) [2023-11-23 21:29:33,496 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 62) no Hoare annotation was computed. [2023-11-23 21:29:33,497 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 38 63) no Hoare annotation was computed. [2023-11-23 21:29:33,497 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_13_to_18_0EXIT(lines 38 63) no Hoare annotation was computed. [2023-11-23 21:29:33,497 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:29:33,498 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:29:33,499 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (= (select (select |#memory_int| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) 0) [2023-11-23 21:29:33,499 INFO L899 garLoopResultBuilder]: For program point L68-1(line 68) no Hoare annotation was computed. [2023-11-23 21:29:33,502 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:29:33,506 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:29:33,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:29:33 BoogieIcfgContainer [2023-11-23 21:29:33,521 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:29:33,521 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:29:33,521 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:29:33,522 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:29:33,522 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:32" (3/4) ... [2023-11-23 21:29:33,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:29:33,529 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_13_to_18_0 [2023-11-23 21:29:33,536 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-11-23 21:29:33,537 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-23 21:29:33,537 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 21:29:33,537 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:29:33,538 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:29:33,652 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:29:33,653 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:29:33,653 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:29:33,653 INFO L158 Benchmark]: Toolchain (without parser) took 2182.02ms. Allocated memory is still 148.9MB. Free memory was 115.6MB in the beginning and 85.3MB in the end (delta: 30.3MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2023-11-23 21:29:33,654 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:29:33,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.54ms. Allocated memory is still 148.9MB. Free memory was 115.6MB in the beginning and 105.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:29:33,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.42ms. Allocated memory is still 148.9MB. Free memory was 105.5MB in the beginning and 103.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:29:33,657 INFO L158 Benchmark]: Boogie Preprocessor took 55.31ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 102.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:29:33,658 INFO L158 Benchmark]: RCFGBuilder took 397.15ms. Allocated memory is still 148.9MB. Free memory was 102.5MB in the beginning and 90.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:29:33,658 INFO L158 Benchmark]: TraceAbstraction took 1211.41ms. Allocated memory is still 148.9MB. Free memory was 90.0MB in the beginning and 89.6MB in the end (delta: 408.6kB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2023-11-23 21:29:33,658 INFO L158 Benchmark]: Witness Printer took 131.46ms. Allocated memory is still 148.9MB. Free memory was 89.6MB in the beginning and 85.3MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:29:33,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.54ms. Allocated memory is still 148.9MB. Free memory was 115.6MB in the beginning and 105.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.42ms. Allocated memory is still 148.9MB. Free memory was 105.5MB in the beginning and 103.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.31ms. Allocated memory is still 148.9MB. Free memory was 103.9MB in the beginning and 102.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.15ms. Allocated memory is still 148.9MB. Free memory was 102.5MB in the beginning and 90.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1211.41ms. Allocated memory is still 148.9MB. Free memory was 90.0MB in the beginning and 89.6MB in the end (delta: 408.6kB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Witness Printer took 131.46ms. Allocated memory is still 148.9MB. Free memory was 89.6MB in the beginning and 85.3MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. 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: 27]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 6 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 7 PreInvPairs, 9 NumberOfFragments, 47 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:29:33,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f1b50b-9f45-4580-89d1-e663005c7550/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE