./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum04-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1dbb3ffac91b20f4dd3e7b4eb671e84b2870fc33 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:49:38,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:49:38,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:49:38,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:49:38,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:49:38,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:49:38,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:49:38,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:49:38,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:49:38,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:49:38,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:49:38,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:49:38,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:49:38,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:49:38,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:49:38,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:49:38,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:49:38,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:49:38,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:49:38,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:49:38,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:49:38,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:49:38,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:49:38,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:49:38,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:49:38,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:49:38,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:49:38,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:49:38,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:49:38,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:49:38,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:49:38,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:49:38,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:49:38,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:49:38,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:49:38,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:49:38,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:49:38,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:49:38,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:49:38,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:49:38,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:49:38,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:49:38,793 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:49:38,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:49:38,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:49:38,794 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:49:38,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:49:38,794 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:49:38,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:49:38,795 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:49:38,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:49:38,795 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:49:38,795 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:49:38,796 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:49:38,796 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:49:38,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:49:38,796 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:49:38,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:49:38,797 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:49:38,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:49:38,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:49:38,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:49:38,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:49:38,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:49:38,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:49:38,798 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:49:38,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:49:38,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:49:38,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:49:38,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:49:38,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:49:38,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:49:38,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:49:38,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:49:38,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:49:38,814 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:49:38,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:49:38,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:49:38,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:49:38,814 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan 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(__VERIFIER_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 -> 1dbb3ffac91b20f4dd3e7b4eb671e84b2870fc33 [2019-11-26 02:49:39,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:49:39,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:49:39,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:49:39,032 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:49:39,033 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:49:39,034 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/../../sv-benchmarks/c/loops/sum04-2.i [2019-11-26 02:49:39,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/data/3ff0c3961/d04018fdaa644ac6b193e605a0ac987e/FLAG4476011c8 [2019-11-26 02:49:39,533 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:49:39,533 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/sv-benchmarks/c/loops/sum04-2.i [2019-11-26 02:49:39,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/data/3ff0c3961/d04018fdaa644ac6b193e605a0ac987e/FLAG4476011c8 [2019-11-26 02:49:39,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/data/3ff0c3961/d04018fdaa644ac6b193e605a0ac987e [2019-11-26 02:49:39,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:49:39,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:49:39,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:39,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:49:39,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:49:39,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:39" (1/1) ... [2019-11-26 02:49:39,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59aa6a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:39, skipping insertion in model container [2019-11-26 02:49:39,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:49:39" (1/1) ... [2019-11-26 02:49:39,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:49:40,000 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:49:40,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:40,216 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:49:40,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:49:40,316 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:49:40,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40 WrapperNode [2019-11-26 02:49:40,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:49:40,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:40,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:49:40,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:49:40,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:49:40,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:49:40,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:49:40,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:49:40,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... [2019-11-26 02:49:40,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:49:40,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:49:40,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:49:40,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:49:40,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/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 [2019-11-26 02:49:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:49:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:49:40,666 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:49:40,666 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:49:40,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:40 BoogieIcfgContainer [2019-11-26 02:49:40,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:49:40,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:49:40,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:49:40,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:49:40,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:49:39" (1/3) ... [2019-11-26 02:49:40,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e55bf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:40, skipping insertion in model container [2019-11-26 02:49:40,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:49:40" (2/3) ... [2019-11-26 02:49:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e55bf2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:49:40, skipping insertion in model container [2019-11-26 02:49:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:40" (3/3) ... [2019-11-26 02:49:40,675 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2019-11-26 02:49:40,685 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:49:40,691 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:49:40,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:49:40,726 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:49:40,726 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:49:40,726 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:49:40,726 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:49:40,726 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:49:40,726 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:49:40,727 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:49:40,727 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:49:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-26 02:49:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:49:40,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:40,747 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:49:40,747 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:40,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:40,753 INFO L82 PathProgramCache]: Analyzing trace with hash 984642, now seen corresponding path program 1 times [2019-11-26 02:49:40,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:40,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087226191] [2019-11-26 02:49:40,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:40,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087226191] [2019-11-26 02:49:40,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:40,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:49:40,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561558267] [2019-11-26 02:49:40,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:49:40,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:40,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:49:40,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:49:40,930 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-26 02:49:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:40,953 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-26 02:49:40,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:49:40,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:49:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:40,962 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:49:40,962 INFO L226 Difference]: Without dead ends: 6 [2019-11-26 02:49:40,965 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:49:40,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-26 02:49:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-26 02:49:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-26 02:49:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-26 02:49:41,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-26 02:49:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:41,001 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-26 02:49:41,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:49:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-26 02:49:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:49:41,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:41,002 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:49:41,002 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash 30447941, now seen corresponding path program 1 times [2019-11-26 02:49:41,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:41,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808093467] [2019-11-26 02:49:41,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:41,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808093467] [2019-11-26 02:49:41,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195405757] [2019-11-26 02:49:41,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:49:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:41,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:49:41,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:49:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:41,095 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:49:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:41,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1874396167] [2019-11-26 02:49:41,146 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-26 02:49:41,146 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:49:41,152 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:49:41,160 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:49:41,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:49:41,289 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:49:41,405 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:49:41,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:49:41,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-11-26 02:49:41,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052385620] [2019-11-26 02:49:41,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:49:41,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:41,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:49:41,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:49:41,408 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2019-11-26 02:49:41,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:41,427 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-11-26 02:49:41,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:49:41,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2019-11-26 02:49:41,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:41,429 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:49:41,429 INFO L226 Difference]: Without dead ends: 9 [2019-11-26 02:49:41,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:49:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-26 02:49:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-26 02:49:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-26 02:49:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-26 02:49:41,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-11-26 02:49:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:41,434 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-26 02:49:41,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:49:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-26 02:49:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:49:41,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:41,435 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2019-11-26 02:49:41,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:49:41,641 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash 761081602, now seen corresponding path program 2 times [2019-11-26 02:49:41,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:41,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782673999] [2019-11-26 02:49:41,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:41,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782673999] [2019-11-26 02:49:41,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597575773] [2019-11-26 02:49:41,740 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:49:41,775 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-26 02:49:41,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:49:41,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:49:41,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:49:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:41,784 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:49:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:41,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1161668930] [2019-11-26 02:49:41,881 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-26 02:49:41,882 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:49:41,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:49:41,882 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:49:41,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:49:41,979 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:49:42,074 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:49:42,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:49:42,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2019-11-26 02:49:42,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925697849] [2019-11-26 02:49:42,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:49:42,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:42,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:49:42,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:49:42,077 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 10 states. [2019-11-26 02:49:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:42,099 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-11-26 02:49:42,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:49:42,100 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2019-11-26 02:49:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:42,101 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:49:42,101 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:49:42,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:49:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:49:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:49:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:49:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-26 02:49:42,104 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2019-11-26 02:49:42,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:42,105 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-26 02:49:42,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:49:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-26 02:49:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-26 02:49:42,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:42,108 INFO L410 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2019-11-26 02:49:42,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:49:42,312 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1105786818, now seen corresponding path program 3 times [2019-11-26 02:49:42,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:42,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366565559] [2019-11-26 02:49:42,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:42,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366565559] [2019-11-26 02:49:42,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462103056] [2019-11-26 02:49:42,519 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:49:42,563 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-26 02:49:42,563 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:49:42,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-26 02:49:42,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:49:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:42,608 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:49:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:42,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1504180452] [2019-11-26 02:49:42,903 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-26 02:49:42,903 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:49:42,903 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:49:42,904 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:49:42,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:49:42,975 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:49:43,122 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:49:43,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:49:43,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2019-11-26 02:49:43,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923312134] [2019-11-26 02:49:43,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-26 02:49:43,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:43,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-26 02:49:43,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-26 02:49:43,125 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 22 states. [2019-11-26 02:49:43,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:43,247 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-26 02:49:43,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:49:43,248 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 12 [2019-11-26 02:49:43,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:43,248 INFO L225 Difference]: With dead ends: 17 [2019-11-26 02:49:43,248 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:49:43,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2019-11-26 02:49:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:49:43,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:49:43,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:49:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-26 02:49:43,253 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-11-26 02:49:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:43,253 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-26 02:49:43,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-26 02:49:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-26 02:49:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:49:43,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:49:43,254 INFO L410 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2019-11-26 02:49:43,458 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:49:43,459 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:49:43,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:49:43,459 INFO L82 PathProgramCache]: Analyzing trace with hash -80422971, now seen corresponding path program 4 times [2019-11-26 02:49:43,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:49:43,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728860609] [2019-11-26 02:49:43,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:49:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:49:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:49:43,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728860609] [2019-11-26 02:49:43,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:49:43,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-26 02:49:43,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655709318] [2019-11-26 02:49:43,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-26 02:49:43,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:49:43,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-26 02:49:43,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:49:43,586 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2019-11-26 02:49:43,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:49:43,612 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-11-26 02:49:43,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-26 02:49:43,613 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-11-26 02:49:43,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:49:43,613 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:49:43,613 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:49:43,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:49:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:49:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:49:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:49:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:49:43,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-26 02:49:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:49:43,615 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:49:43,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-26 02:49:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:49:43,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:49:43,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:49:43,806 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2019-11-26 02:49:43,809 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:49:43,810 INFO L440 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~sn~0 6) (<= 6 ULTIMATE.start_main_~sn~0) (<= 4 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 4)) (and (<= ULTIMATE.start_main_~sn~0 12) (<= 7 ULTIMATE.start_main_~i~0) (<= 12 ULTIMATE.start_main_~sn~0) (< ULTIMATE.start_main_~i~0 8)) (and (<= 9 ULTIMATE.start_main_~i~0) (<= 16 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~sn~0 16)) (and (<= 8 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 5) (<= 5 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~sn~0 8)) (and (<= 2 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 2) (<= ULTIMATE.start_main_~sn~0 2) (<= 2 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~sn~0 0) (<= 1 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 1) (<= 0 ULTIMATE.start_main_~sn~0)) (and (<= 3 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 3) (<= ULTIMATE.start_main_~sn~0 4) (<= 4 ULTIMATE.start_main_~sn~0)) (and (<= ULTIMATE.start_main_~sn~0 10) (< ULTIMATE.start_main_~i~0 7) (<= 6 ULTIMATE.start_main_~i~0) (<= 10 ULTIMATE.start_main_~sn~0)) (and (<= 14 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 8) (<= ULTIMATE.start_main_~sn~0 14) (<= 8 ULTIMATE.start_main_~i~0))) [2019-11-26 02:49:43,810 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 02:49:43,810 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:49:43,810 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 02:49:43,810 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 02:49:43,811 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 1 17) the Hoare annotation is: true [2019-11-26 02:49:43,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:49:43 BoogieIcfgContainer [2019-11-26 02:49:43,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:49:43,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:49:43,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:49:43,843 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:49:43,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:49:40" (3/4) ... [2019-11-26 02:49:43,847 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:49:43,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:49:43,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:49:43,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_852bed8a-7e62-45e9-8a91-62c047011188/bin/utaipan/witness.graphml [2019-11-26 02:49:43,919 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:49:43,920 INFO L168 Benchmark]: Toolchain (without parser) took 3962.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 951.4 MB in the beginning and 841.7 MB in the end (delta: 109.7 MB). Peak memory consumption was 220.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:43,922 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:43,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:43,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:43,924 INFO L168 Benchmark]: Boogie Preprocessor took 19.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:49:43,926 INFO L168 Benchmark]: RCFGBuilder took 299.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:43,927 INFO L168 Benchmark]: TraceAbstraction took 3174.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 848.8 MB in the end (delta: 228.4 MB). Peak memory consumption was 228.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:43,929 INFO L168 Benchmark]: Witness Printer took 76.25 ms. Allocated memory is still 1.1 GB. Free memory was 848.8 MB in the beginning and 841.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:49:43,936 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 299.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3174.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 848.8 MB in the end (delta: 228.4 MB). Peak memory consumption was 228.4 MB. Max. memory is 11.5 GB. * Witness Printer took 76.25 ms. Allocated memory is still 1.1 GB. Free memory was 848.8 MB in the beginning and 841.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((((((((((sn <= 6 && 6 <= sn) && 4 <= i) && i <= 4) || (((sn <= 12 && 7 <= i) && 12 <= sn) && i < 8)) || ((9 <= i && 16 <= sn) && sn <= 16)) || (((8 <= sn && i <= 5) && 5 <= i) && sn <= 8)) || (((2 <= sn && i <= 2) && sn <= 2) && 2 <= i)) || (((sn <= 0 && 1 <= i) && i <= 1) && 0 <= sn)) || (((3 <= i && i <= 3) && sn <= 4) && 4 <= sn)) || (((sn <= 10 && i < 7) && 6 <= i) && 10 <= sn)) || (((14 <= sn && i <= 8) && sn <= 14) && 8 <= i) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 9, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 18 SDtfs, 2 SDslu, 42 SDs, 0 SdLazy, 200 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 116 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 3237 SizeOfPredicates, 5 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 45/186 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...