./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/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 ccfa8861d162225c615acc9ffa4374a5998b45db ..................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:23:47,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:23:47,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:23:47,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:23:47,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:23:47,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:23:47,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:23:47,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:23:47,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:23:47,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:23:47,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:23:47,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:23:47,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:23:47,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:23:47,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:23:47,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:23:47,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:23:47,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:23:47,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:23:47,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:23:47,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:23:47,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:23:47,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:23:47,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:23:47,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:23:47,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:23:47,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:23:47,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:23:47,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:23:47,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:23:47,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:23:47,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:23:47,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:23:47,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:23:47,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:23:47,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:23:47,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:23:47,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:23:47,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:23:47,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:23:47,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:23:47,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:23:47,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:23:47,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:23:47,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:23:47,888 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:23:47,888 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:23:47,888 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:23:47,888 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:23:47,888 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:23:47,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:23:47,889 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:23:47,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:23:47,889 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:23:47,889 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:23:47,889 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:23:47,889 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:23:47,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:23:47,890 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:23:47,891 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:23:47,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:23:47,891 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:23:47,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:23:47,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:23:47,891 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:23:47,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:23:47,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:23:47,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:23:47,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:23:47,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:23:47,892 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:23:47,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:23:47,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:23:47,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:23:47,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:23:47,893 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_7f2b0517-6fe6-4835-af4f-786d3057ecfd/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 -> ccfa8861d162225c615acc9ffa4374a5998b45db [2019-12-07 14:23:47,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:23:48,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:23:48,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:23:48,004 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:23:48,004 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:23:48,005 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/loopv2.c [2019-12-07 14:23:48,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/data/685f97e9a/26c5ccb98e8644efa92f6ce14ee59339/FLAG1822a7ff9 [2019-12-07 14:23:48,518 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:23:48,519 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/sv-benchmarks/c/loops-crafted-1/loopv2.c [2019-12-07 14:23:48,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/data/685f97e9a/26c5ccb98e8644efa92f6ce14ee59339/FLAG1822a7ff9 [2019-12-07 14:23:48,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/data/685f97e9a/26c5ccb98e8644efa92f6ce14ee59339 [2019-12-07 14:23:48,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:23:48,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:23:48,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:23:48,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:23:48,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:23:48,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d1e875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48, skipping insertion in model container [2019-12-07 14:23:48,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:23:48,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:23:48,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:23:48,667 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:23:48,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:23:48,718 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:23:48,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48 WrapperNode [2019-12-07 14:23:48,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:23:48,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:23:48,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:23:48,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:23:48,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:23:48,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:23:48,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:23:48,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:23:48,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... [2019-12-07 14:23:48,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:23:48,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:23:48,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:23:48,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:23:48,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/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 [2019-12-07 14:23:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:23:48,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:23:48,922 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:23:48,922 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 14:23:48,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:23:48 BoogieIcfgContainer [2019-12-07 14:23:48,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:23:48,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:23:48,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:23:48,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:23:48,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:23:48" (1/3) ... [2019-12-07 14:23:48,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1091a996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:23:48, skipping insertion in model container [2019-12-07 14:23:48,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:23:48" (2/3) ... [2019-12-07 14:23:48,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1091a996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:23:48, skipping insertion in model container [2019-12-07 14:23:48,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:23:48" (3/3) ... [2019-12-07 14:23:48,927 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv2.c [2019-12-07 14:23:48,933 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:23:48,938 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:23:48,945 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:23:48,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:23:48,959 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:23:48,959 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:23:48,959 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:23:48,959 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:23:48,959 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:23:48,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:23:48,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:23:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-12-07 14:23:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:23:48,971 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:48,972 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:23:48,972 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:23:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:48,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2025228292, now seen corresponding path program 1 times [2019-12-07 14:23:48,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:48,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374438046] [2019-12-07 14:23:48,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:49,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374438046] [2019-12-07 14:23:49,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:23:49,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 14:23:49,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505856957] [2019-12-07 14:23:49,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:23:49,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:23:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:23:49,161 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2019-12-07 14:23:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:49,237 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-12-07 14:23:49,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:23:49,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 14:23:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:49,244 INFO L225 Difference]: With dead ends: 30 [2019-12-07 14:23:49,244 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 14:23:49,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:23:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 14:23:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2019-12-07 14:23:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:23:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2019-12-07 14:23:49,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2019-12-07 14:23:49,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:49,268 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-12-07 14:23:49,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:23:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2019-12-07 14:23:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 14:23:49,269 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:23:49,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:23:49,269 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:23:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:23:49,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1610065884, now seen corresponding path program 1 times [2019-12-07 14:23:49,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:23:49,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901669431] [2019-12-07 14:23:49,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:23:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:49,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901669431] [2019-12-07 14:23:49,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774334619] [2019-12-07 14:23:49,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/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 [2019-12-07 14:23:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:23:49,364 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:23:49,367 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:23:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:49,395 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:23:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:23:49,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864244347] [2019-12-07 14:23:49,431 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-12-07 14:23:49,431 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:23:49,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 14:23:49,439 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 14:23:49,439 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 14:23:49,547 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 14:23:49,711 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 14:23:49,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:23:49,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2019-12-07 14:23:49,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757845423] [2019-12-07 14:23:49,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 14:23:49,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:23:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 14:23:49,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:23:49,713 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 7 states. [2019-12-07 14:23:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:23:49,757 INFO L93 Difference]: Finished difference Result 12 states and 17 transitions. [2019-12-07 14:23:49,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:23:49,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2019-12-07 14:23:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:23:49,758 INFO L225 Difference]: With dead ends: 12 [2019-12-07 14:23:49,758 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:23:49,759 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2019-12-07 14:23:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:23:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:23:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:23:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:23:49,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-12-07 14:23:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:23:49,761 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:23:49,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 14:23:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:23:49,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:23:49,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:23:49,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 14:23:50,098 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 14:23:50,099 INFO L242 CegarLoopResult]: At program point L23-2(lines 23 26) the Hoare annotation is: (and (= (mod ULTIMATE.start_main_~i~0 2) 0) (= (mod ULTIMATE.start_main_~j~0 2) 0)) [2019-12-07 14:23:50,099 INFO L246 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2019-12-07 14:23:50,099 INFO L242 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= (mod ULTIMATE.start_main_~i~0 2) 0) (= (mod ULTIMATE.start_main_~j~0 2) 0)) [2019-12-07 14:23:50,100 INFO L246 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2019-12-07 14:23:50,100 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 14:23:50,101 INFO L249 CegarLoopResult]: At program point L28(lines 12 29) the Hoare annotation is: true [2019-12-07 14:23:50,101 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-12-07 14:23:50,101 INFO L246 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2019-12-07 14:23:50,102 INFO L242 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-12-07 14:23:50,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:23:50 BoogieIcfgContainer [2019-12-07 14:23:50,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:23:50,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:23:50,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:23:50,132 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:23:50,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:23:48" (3/4) ... [2019-12-07 14:23:50,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:23:50,142 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-12-07 14:23:50,142 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 14:23:50,171 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7f2b0517-6fe6-4835-af4f-786d3057ecfd/bin/utaipan/witness.graphml [2019-12-07 14:23:50,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:23:50,172 INFO L168 Benchmark]: Toolchain (without parser) took 1638.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 944.7 MB in the beginning and 942.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 98.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:50,173 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:23:50,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:50,173 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.91 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. [2019-12-07 14:23:50,174 INFO L168 Benchmark]: Boogie Preprocessor took 12.81 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:50,174 INFO L168 Benchmark]: RCFGBuilder took 170.17 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:50,174 INFO L168 Benchmark]: TraceAbstraction took 1207.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 942.0 MB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:23:50,174 INFO L168 Benchmark]: Witness Printer took 39.88 ms. Allocated memory is still 1.1 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:23:50,176 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.91 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 12.81 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 170.17 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1207.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 942.0 MB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. * Witness Printer took 39.88 ms. Allocated memory is still 1.1 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 17]: Loop Invariant Derived loop invariant: i % 2 == 0 && j % 2 == 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: i % 2 == 0 && j % 2 == 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 12 SDtfs, 24 SDslu, 28 SDs, 0 SdLazy, 39 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 27 HoareAnnotationTreeSize, 4 FomulaSimplifications, 63 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 2 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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...