./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje --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 93f6049834027826884500d547bca7113061f8754e944538b453474a4566d492 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:43:12,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:43:12,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:43:12,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:43:12,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:43:12,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:43:12,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:43:12,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:43:12,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:43:12,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:43:12,424 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:43:12,424 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:43:12,425 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:43:12,426 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:43:12,426 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:43:12,426 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:43:12,427 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:43:12,427 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:43:12,428 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:43:12,433 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:43:12,434 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:43:12,435 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:43:12,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:43:12,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:43:12,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:43:12,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:43:12,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:43:12,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:43:12,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:43:12,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:43:12,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:43:12,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:43:12,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:43:12,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:43:12,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:43:12,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:43:12,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:43:12,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:43:12,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:43:12,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:43:12,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:43:12,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:43:12,447 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:43:12,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:43:12,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:43:12,448 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:43:12,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:43:12,448 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_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93f6049834027826884500d547bca7113061f8754e944538b453474a4566d492 [2024-11-09 05:43:12,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:43:12,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:43:12,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:43:12,906 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:43:12,908 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:43:12,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-56.i Unable to find full path for "g++" [2024-11-09 05:43:15,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:43:15,787 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:43:15,788 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-56.i [2024-11-09 05:43:15,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/data/341087f4b/31beae18f6924d0fb6738192f58182d5/FLAGc7f80a6a4 [2024-11-09 05:43:15,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/data/341087f4b/31beae18f6924d0fb6738192f58182d5 [2024-11-09 05:43:15,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:43:15,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:43:15,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:43:15,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:43:15,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:43:15,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:43:15" (1/1) ... [2024-11-09 05:43:15,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296a0b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:15, skipping insertion in model container [2024-11-09 05:43:15,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:43:15" (1/1) ... [2024-11-09 05:43:15,873 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:43:16,158 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_ae946370-9ffd-45f3-a2b6-ca27005302b2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-56.i[915,928] [2024-11-09 05:43:16,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:43:16,229 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:43:16,248 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_ae946370-9ffd-45f3-a2b6-ca27005302b2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-56.i[915,928] [2024-11-09 05:43:16,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:43:16,327 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:43:16,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16 WrapperNode [2024-11-09 05:43:16,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:43:16,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:43:16,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:43:16,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:43:16,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,424 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2024-11-09 05:43:16,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:43:16,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:43:16,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:43:16,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:43:16,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:43:16,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:43:16,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:43:16,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:43:16,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (1/1) ... [2024-11-09 05:43:16,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:43:16,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:16,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:43:16,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:43:16,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:43:16,592 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:43:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:43:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:43:16,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:43:16,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:43:16,717 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:43:16,720 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:43:17,212 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-09 05:43:17,213 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:43:17,427 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:43:17,427 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:43:17,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:43:17 BoogieIcfgContainer [2024-11-09 05:43:17,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:43:17,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:43:17,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:43:17,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:43:17,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:43:15" (1/3) ... [2024-11-09 05:43:17,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7f5e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:43:17, skipping insertion in model container [2024-11-09 05:43:17,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:43:16" (2/3) ... [2024-11-09 05:43:17,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7f5e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:43:17, skipping insertion in model container [2024-11-09 05:43:17,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:43:17" (3/3) ... [2024-11-09 05:43:17,440 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-56.i [2024-11-09 05:43:17,463 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:43:17,463 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:43:17,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:43:17,591 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=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;@3cfc1756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:43:17,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:43:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:43:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 05:43:17,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:17,612 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:43:17,612 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:17,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash 872672789, now seen corresponding path program 1 times [2024-11-09 05:43:17,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:17,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898163265] [2024-11-09 05:43:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:17,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 05:43:19,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:19,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898163265] [2024-11-09 05:43:19,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898163265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:43:19,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:43:19,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:43:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218859415] [2024-11-09 05:43:19,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:43:19,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:43:19,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:43:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:43:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:43:19,747 INFO L87 Difference]: Start difference. First operand has 24 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-09 05:43:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:43:19,996 INFO L93 Difference]: Finished difference Result 67 states and 100 transitions. [2024-11-09 05:43:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:43:20,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 39 [2024-11-09 05:43:20,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:43:20,011 INFO L225 Difference]: With dead ends: 67 [2024-11-09 05:43:20,011 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 05:43:20,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:43:20,027 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:43:20,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 107 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:43:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 05:43:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-09 05:43:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 05:43:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2024-11-09 05:43:20,109 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 39 [2024-11-09 05:43:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:43:20,110 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2024-11-09 05:43:20,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-09 05:43:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2024-11-09 05:43:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 05:43:20,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:43:20,118 INFO L215 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 05:43:20,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:43:20,120 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:43:20,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:43:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1438039719, now seen corresponding path program 1 times [2024-11-09 05:43:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:43:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159188183] [2024-11-09 05:43:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:43:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 26 proven. 41 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-09 05:43:22,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:43:22,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159188183] [2024-11-09 05:43:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159188183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:43:22,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770092909] [2024-11-09 05:43:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:43:22,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:43:22,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:43:22,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:43:22,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:43:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:43:23,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 05:43:23,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:45:56,577 WARN L286 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 230 DAG size of output: 318 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:46:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 247 proven. 111 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 05:46:08,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:46:54,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770092909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:46:54,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1576008599] [2024-11-09 05:46:54,338 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-09 05:46:54,338 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:46:54,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:46:54,350 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:46:54,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:51:33,659 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2024-11-09 05:51:33,661 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:51:36,038 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '595#(and (<= ~var_1_3~0 16) (<= 1 |#StackHeapBarrier|) (= 1000000 ~var_1_8~0) (<= 0 ~var_1_3~0) (<= ~isInitial~0 1) (<= 0 ~isInitial~0))' at error location [2024-11-09 05:51:36,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:51:36,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:51:36,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 21 [2024-11-09 05:51:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505628994] [2024-11-09 05:51:36,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:51:36,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 05:51:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:51:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 05:51:36,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1557, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 05:51:36,044 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 21 states, 14 states have (on average 2.857142857142857) internal successors, (40), 19 states have internal predecessors, (40), 10 states have call successors, (40), 9 states have call predecessors, (40), 14 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-09 05:51:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:36,568 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-09 05:51:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:51:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 2.857142857142857) internal successors, (40), 19 states have internal predecessors, (40), 10 states have call successors, (40), 9 states have call predecessors, (40), 14 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 77 [2024-11-09 05:51:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:36,570 INFO L225 Difference]: With dead ends: 62 [2024-11-09 05:51:36,571 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:51:36,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=400, Invalid=2150, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 05:51:36,574 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:36,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 56 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:51:36,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:51:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:51:36,575 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) [2024-11-09 05:51:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:51:36,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2024-11-09 05:51:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:36,576 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:51:36,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 14 states have (on average 2.857142857142857) internal successors, (40), 19 states have internal predecessors, (40), 10 states have call successors, (40), 9 states have call predecessors, (40), 14 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-09 05:51:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:51:36,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:51:36,580 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:51:36,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:51:36,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:36,785 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 05:51:36,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:51:37,787 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:51:37,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:51:37 BoogieIcfgContainer [2024-11-09 05:51:37,837 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:51:37,838 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:51:37,838 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:51:37,838 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:51:37,839 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:43:17" (3/4) ... [2024-11-09 05:51:37,846 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:51:37,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-09 05:51:37,862 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-11-09 05:51:37,863 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-09 05:51:37,863 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 05:51:37,863 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:51:38,003 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:51:38,004 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:51:38,004 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:51:38,005 INFO L158 Benchmark]: Toolchain (without parser) took 502178.80ms. Allocated memory was 163.6MB in the beginning and 885.0MB in the end (delta: 721.4MB). Free memory was 131.1MB in the beginning and 529.1MB in the end (delta: -398.1MB). Peak memory consumption was 326.0MB. Max. memory is 16.1GB. [2024-11-09 05:51:38,006 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 113.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:51:38,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.35ms. Allocated memory is still 163.6MB. Free memory was 130.6MB in the beginning and 116.4MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 05:51:38,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.47ms. Allocated memory is still 163.6MB. Free memory was 116.4MB in the beginning and 113.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:51:38,007 INFO L158 Benchmark]: Boogie Preprocessor took 65.33ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 111.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:51:38,007 INFO L158 Benchmark]: RCFGBuilder took 936.95ms. Allocated memory is still 163.6MB. Free memory was 111.3MB in the beginning and 81.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 05:51:38,008 INFO L158 Benchmark]: TraceAbstraction took 500405.95ms. Allocated memory was 163.6MB in the beginning and 885.0MB in the end (delta: 721.4MB). Free memory was 81.3MB in the beginning and 534.4MB in the end (delta: -453.1MB). Peak memory consumption was 271.4MB. Max. memory is 16.1GB. [2024-11-09 05:51:38,008 INFO L158 Benchmark]: Witness Printer took 166.70ms. Allocated memory is still 885.0MB. Free memory was 534.4MB in the beginning and 529.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:51:38,011 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 113.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.35ms. Allocated memory is still 163.6MB. Free memory was 130.6MB in the beginning and 116.4MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.47ms. Allocated memory is still 163.6MB. Free memory was 116.4MB in the beginning and 113.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.33ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 111.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 936.95ms. Allocated memory is still 163.6MB. Free memory was 111.3MB in the beginning and 81.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 500405.95ms. Allocated memory was 163.6MB in the beginning and 885.0MB in the end (delta: 721.4MB). Free memory was 81.3MB in the beginning and 534.4MB in the end (delta: -453.1MB). Peak memory consumption was 271.4MB. Max. memory is 16.1GB. * Witness Printer took 166.70ms. Allocated memory is still 885.0MB. Free memory was 534.4MB in the beginning and 529.1MB in the end (delta: 5.2MB). 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: 19]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 499.2s, OverallIterations: 2, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 42 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=1, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 215.1s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 190 ConstructedInterpolants, 0 QuantifiedInterpolants, 1400 SizeOfPredicates, 16 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 732/884 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 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: ((((((var_1_6 <= 127) && (1073741823 <= var_1_10)) && (var_1_11 == 0)) && (127 <= var_1_5)) && (last_1_var_1_11 == 0)) && (var_1_5 <= 254)) - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (((((var_1_11 == 0) && (127 <= var_1_5)) && (last_1_var_1_11 == 0)) && (var_1_5 <= 254)) || (((var_1_6 <= 127) && (var_1_11 == 0)) && (last_1_var_1_11 == 0))) Ensures: (((cond != 0) && (((((var_1_11 == 0) && (127 <= var_1_5)) && (last_1_var_1_11 == 0)) && (var_1_5 <= 254)) || (((var_1_6 <= 127) && (var_1_11 == 0)) && (last_1_var_1_11 == 0)))) && ((((((((((((isInitial == \old(isInitial)) && (var_1_1 == \old(var_1_1))) && (var_1_3 == \old(var_1_3))) && (var_1_5 == \old(var_1_5))) && (var_1_6 == \old(var_1_6))) && (var_1_7 == \old(var_1_7))) && (var_1_8 == \old(var_1_8))) && (var_1_10 == \old(var_1_10))) && (var_1_11 == \old(var_1_11))) && (var_1_12 == \old(var_1_12))) && (last_1_var_1_1 == \old(last_1_var_1_1))) && (last_1_var_1_11 == \old(last_1_var_1_11)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:51:38,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae946370-9ffd-45f3-a2b6-ca27005302b2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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