./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_03-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/terminator_03-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --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 67505ab4d8c5a0470c6c2902a08f5f9b7fa098ac ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:17,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:17,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:17,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:17,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:17,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:17,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:17,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:17,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:17,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:17,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:17,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:17,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:17,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:17,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:17,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:17,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:17,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:17,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:17,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:17,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:17,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:17,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:17,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:17,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:17,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:17,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:17,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:17,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:17,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:17,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:17,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:17,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:17,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:17,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:17,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:17,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:17,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:17,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:17,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:17,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:17,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:17,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:17,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:17,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:17,959 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:17,960 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:17,960 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:17,960 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:17,960 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:17,960 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:17,961 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:17,961 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:17,961 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:17,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:17,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:17,962 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:17,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:17,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:17,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:17,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:17,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:17,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:17,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:17,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:17,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:17,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:17,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:17,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:17,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:17,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:17,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:17,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:17,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:17,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:17,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:17,966 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:17,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:17,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:17,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:17,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:17,972 INFO L138 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_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67505ab4d8c5a0470c6c2902a08f5f9b7fa098ac [2021-10-11 02:27:18,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:18,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:18,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:18,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:18,301 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:18,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops/terminator_03-2.i [2021-10-11 02:27:18,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/data/e97dcb8b1/ad755fbf4acd4c58978d80ea57177a8c/FLAG0d959c22d [2021-10-11 02:27:18,778 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:18,779 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/sv-benchmarks/c/loops/terminator_03-2.i [2021-10-11 02:27:18,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/data/e97dcb8b1/ad755fbf4acd4c58978d80ea57177a8c/FLAG0d959c22d [2021-10-11 02:27:19,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/data/e97dcb8b1/ad755fbf4acd4c58978d80ea57177a8c [2021-10-11 02:27:19,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:19,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:19,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:19,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:19,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:19,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f9276b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19, skipping insertion in model container [2021-10-11 02:27:19,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:19,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:19,456 WARN L226 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_801513c1-d14d-491a-a790-91ad9b3fe1e5/sv-benchmarks/c/loops/terminator_03-2.i[902,915] [2021-10-11 02:27:19,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:19,474 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:19,487 WARN L226 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_801513c1-d14d-491a-a790-91ad9b3fe1e5/sv-benchmarks/c/loops/terminator_03-2.i[902,915] [2021-10-11 02:27:19,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:19,503 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:19,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19 WrapperNode [2021-10-11 02:27:19,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:19,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:19,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:19,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:19,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:19,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:19,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:19,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:19,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... [2021-10-11 02:27:19,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:19,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:19,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:19,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:19,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:19,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:19,937 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:27:19,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:19 BoogieIcfgContainer [2021-10-11 02:27:19,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:19,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:19,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:19,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:19,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:19" (1/3) ... [2021-10-11 02:27:19,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4aaff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:19, skipping insertion in model container [2021-10-11 02:27:19,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:19" (2/3) ... [2021-10-11 02:27:19,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4aaff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:19, skipping insertion in model container [2021-10-11 02:27:19,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:19" (3/3) ... [2021-10-11 02:27:19,958 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2021-10-11 02:27:19,987 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:19,989 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:19,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:20,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:20,021 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:20,021 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:20,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:20,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:20,022 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:20,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:20,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:27:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:20,039 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:20,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:20,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2068504419, now seen corresponding path program 1 times [2021-10-11 02:27:20,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:20,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141771705] [2021-10-11 02:27:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:20,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141771705] [2021-10-11 02:27:20,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:20,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:20,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25399471] [2021-10-11 02:27:20,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:20,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:20,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:20,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:20,362 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2021-10-11 02:27:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:20,431 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-11 02:27:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:20,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:27:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:20,442 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:27:20,443 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:20,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:20,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-11 02:27:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:20,470 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:20,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:20,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:20,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:20,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:20,514 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:20,514 INFO L262 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2021-10-11 02:27:20,514 INFO L262 CegarLoopResult]: For program point L29-1(lines 29 33) no Hoare annotation was computed. [2021-10-11 02:27:20,514 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:27:20,515 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:20,515 INFO L262 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2021-10-11 02:27:20,515 INFO L265 CegarLoopResult]: At program point L30-2(lines 30 32) the Hoare annotation is: true [2021-10-11 02:27:20,515 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:27:20,515 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:27:20,516 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (or (<= 100 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 0))) [2021-10-11 02:27:20,516 INFO L265 CegarLoopResult]: At program point L35(lines 25 36) the Hoare annotation is: true [2021-10-11 02:27:20,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:20 BoogieIcfgContainer [2021-10-11 02:27:20,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:20,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:20,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:20,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:20,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:19" (3/4) ... [2021-10-11 02:27:20,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:20,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:27:20,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:20,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:20,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:20,605 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_801513c1-d14d-491a-a790-91ad9b3fe1e5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:20,606 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:20,608 INFO L168 Benchmark]: Toolchain (without parser) took 1416.33 ms. Allocated memory is still 111.1 MB. Free memory was 74.9 MB in the beginning and 43.2 MB in the end (delta: 31.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:20,608 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 82.2 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:20,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.62 ms. Allocated memory is still 111.1 MB. Free memory was 74.7 MB in the beginning and 85.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:20,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 83.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:20,611 INFO L168 Benchmark]: Boogie Preprocessor took 19.79 ms. Allocated memory is still 111.1 MB. Free memory was 83.6 MB in the beginning and 82.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:20,611 INFO L168 Benchmark]: RCFGBuilder took 382.56 ms. Allocated memory is still 111.1 MB. Free memory was 82.5 MB in the beginning and 69.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:20,612 INFO L168 Benchmark]: TraceAbstraction took 595.37 ms. Allocated memory is still 111.1 MB. Free memory was 69.4 MB in the beginning and 45.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:20,613 INFO L168 Benchmark]: Witness Printer took 66.99 ms. Allocated memory is still 111.1 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:20,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 111.1 MB. Free memory was 82.3 MB in the beginning and 82.2 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.62 ms. Allocated memory is still 111.1 MB. Free memory was 74.7 MB in the beginning and 85.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 83.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.79 ms. Allocated memory is still 111.1 MB. Free memory was 83.6 MB in the beginning and 82.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 382.56 ms. Allocated memory is still 111.1 MB. Free memory was 82.5 MB in the beginning and 69.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 595.37 ms. Allocated memory is still 111.1 MB. Free memory was 69.4 MB in the beginning and 45.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 66.99 ms. Allocated memory is still 111.1 MB. Free memory was 45.3 MB in the beginning and 43.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(0 == cond) && (100 <= x || y <= 0) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 7 SDslu, 9 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, 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, 3 PreInvPairs, 6 NumberOfFragments, 14 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 70 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...