./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c --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_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/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 c8a6493762f89d18a23d3a0b9dc19677bd5f4752 ........................................................................................................................................................................................................................................................................................................................ 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 02:59:28,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:59:28,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:59:28,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:59:28,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:59:28,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:59:28,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:59:28,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:59:28,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:59:28,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:59:28,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:59:28,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:59:28,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:59:28,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:59:28,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:59:28,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:59:28,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:59:28,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:59:28,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:59:28,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:59:28,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:59:28,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:59:28,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:59:28,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:59:28,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:59:28,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:59:28,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:59:28,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:59:28,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:59:28,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:59:28,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:59:28,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:59:28,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:59:28,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:59:28,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:59:28,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:59:28,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:59:28,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:59:28,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:59:28,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:59:28,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:59:28,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:59:28,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:59:28,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:59:28,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:59:28,911 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:59:28,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:59:28,912 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:59:28,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:59:28,912 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:59:28,912 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:59:28,912 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:59:28,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:59:28,913 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:59:28,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:59:28,913 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:59:28,913 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:59:28,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:59:28,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:59:28,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:59:28,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:59:28,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:59:28,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:59:28,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:59:28,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:59:28,915 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:59:28,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:59:28,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:59:28,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:59:28,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:59:28,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:59:28,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:59:28,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:59:28,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:59:28,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:59:28,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:59:28,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:59:28,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:59:28,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:59:28,918 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_7786fb5f-e0a4-4a77-8193-c406fe04e679/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 -> c8a6493762f89d18a23d3a0b9dc19677bd5f4752 [2019-11-26 02:59:29,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:59:29,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:59:29,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:59:29,067 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:59:29,068 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:59:29,068 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-26 02:59:29,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/data/c9dd14462/01c1bea732df45c3a0442cb802b4b20a/FLAG1de585d6a [2019-11-26 02:59:29,519 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:59:29,520 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-11-26 02:59:29,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/data/c9dd14462/01c1bea732df45c3a0442cb802b4b20a/FLAG1de585d6a [2019-11-26 02:59:29,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/data/c9dd14462/01c1bea732df45c3a0442cb802b4b20a [2019-11-26 02:59:29,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:59:29,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:59:29,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:29,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:59:29,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:59:29,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e94434d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29, skipping insertion in model container [2019-11-26 02:59:29,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:59:29,588 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:59:29,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:29,800 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:59:29,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:29,884 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:59:29,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29 WrapperNode [2019-11-26 02:59:29,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:29,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:29,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:59:29,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:59:29,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:29,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:59:29,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:59:29,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:59:29,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... [2019-11-26 02:59:29,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:59:29,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:59:29,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:59:29,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:59:29,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/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 02:59:29,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:59:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:59:30,150 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:59:30,151 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:59:30,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:30 BoogieIcfgContainer [2019-11-26 02:59:30,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:59:30,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:59:30,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:59:30,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:59:30,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:59:29" (1/3) ... [2019-11-26 02:59:30,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216891fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:30, skipping insertion in model container [2019-11-26 02:59:30,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:29" (2/3) ... [2019-11-26 02:59:30,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216891fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:30, skipping insertion in model container [2019-11-26 02:59:30,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:30" (3/3) ... [2019-11-26 02:59:30,158 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2019-11-26 02:59:30,165 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:59:30,171 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:59:30,181 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:59:30,197 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:59:30,197 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:59:30,197 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:59:30,198 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:59:30,198 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:59:30,198 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:59:30,198 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:59:30,198 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:59:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 02:59:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:59:30,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:30,215 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:30,215 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:30,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1336854606, now seen corresponding path program 1 times [2019-11-26 02:59:30,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:30,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390947237] [2019-11-26 02:59:30,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:30,368 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 02:59:30,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390947237] [2019-11-26 02:59:30,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:30,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:59:30,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177444173] [2019-11-26 02:59:30,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:59:30,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:30,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:59:30,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:59:30,386 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2019-11-26 02:59:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:30,506 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-11-26 02:59:30,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:59:30,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-26 02:59:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:30,517 INFO L225 Difference]: With dead ends: 24 [2019-11-26 02:59:30,518 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:59:30,520 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:59:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:59:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:59:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:59:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-26 02:59:30,549 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-11-26 02:59:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:30,549 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-26 02:59:30,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:59:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-26 02:59:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:59:30,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:30,550 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:30,551 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash 519966449, now seen corresponding path program 1 times [2019-11-26 02:59:30,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:30,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488755011] [2019-11-26 02:59:30,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:59:30,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488755011] [2019-11-26 02:59:30,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497178811] [2019-11-26 02:59:30,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/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 02:59:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:30,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:59:30,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:30,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:59:30,757 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:59:30,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:59:30,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2019-11-26 02:59:30,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916186587] [2019-11-26 02:59:30,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:59:30,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:30,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:59:30,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:59:30,819 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2019-11-26 02:59:30,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:30,853 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-11-26 02:59:30,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:59:30,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-26 02:59:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:30,853 INFO L225 Difference]: With dead ends: 11 [2019-11-26 02:59:30,853 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:59:30,854 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:59:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:59:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:59:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:59:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:59:30,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-26 02:59:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:30,855 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:59:30,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:59:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:59:30,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:59:31,056 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:31,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:59:31,093 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:59:31,093 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 66) no Hoare annotation was computed. [2019-11-26 02:59:31,094 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 67) no Hoare annotation was computed. [2019-11-26 02:59:31,094 INFO L444 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-26 02:59:31,094 INFO L444 ceAbstractionStarter]: For program point L50(lines 50 59) no Hoare annotation was computed. [2019-11-26 02:59:31,094 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 68) no Hoare annotation was computed. [2019-11-26 02:59:31,094 INFO L440 ceAbstractionStarter]: At program point L65(lines 9 69) the Hoare annotation is: (or (not (= 0 ULTIMATE.start_main_~__VERIFIER_assert__cond~0)) (<= (+ ULTIMATE.start_main_~main__x~0 50) 0)) [2019-11-26 02:59:31,094 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:59:31,095 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2019-11-26 02:59:31,095 INFO L440 ceAbstractionStarter]: At program point L41(lines 28 62) the Hoare annotation is: (or (< 0 ULTIMATE.start_main_~main__y~0) (< ULTIMATE.start_main_~main__x~0 0)) [2019-11-26 02:59:31,095 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 61) no Hoare annotation was computed. [2019-11-26 02:59:31,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:59:31 BoogieIcfgContainer [2019-11-26 02:59:31,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:59:31,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:59:31,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:59:31,111 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:59:31,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:30" (3/4) ... [2019-11-26 02:59:31,124 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:59:31,137 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-26 02:59:31,138 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:59:31,207 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7786fb5f-e0a4-4a77-8193-c406fe04e679/bin/utaipan/witness.graphml [2019-11-26 02:59:31,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:59:31,210 INFO L168 Benchmark]: Toolchain (without parser) took 1660.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -101.9 MB). Peak memory consumption was 36.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:31,211 INFO L168 Benchmark]: CDTParser took 0.28 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 02:59:31,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:31,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:31,212 INFO L168 Benchmark]: Boogie Preprocessor took 15.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:31,213 INFO L168 Benchmark]: RCFGBuilder took 223.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:31,213 INFO L168 Benchmark]: TraceAbstraction took 957.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:31,213 INFO L168 Benchmark]: Witness Printer took 97.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:31,216 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 330.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -186.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 957.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. * Witness Printer took 97.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 9]: Loop Invariant Derived loop invariant: !(0 == __VERIFIER_assert__cond) || main__x + 50 <= 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 < main__y || main__x < 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 13 SDslu, 19 SDs, 0 SdLazy, 29 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 17 HoareAnnotationTreeSize, 2 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1281 SizeOfPredicates, 6 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 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...