./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.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_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/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 1ca0873bbf5698fb1752ac7aba535da1c4a773e2 ............................................................................................................................................................................................................................................................................................................................ 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 02:40:50,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:40:50,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:40:50,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:40:50,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:40:50,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:40:50,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:40:50,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:40:50,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:40:50,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:40:50,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:40:50,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:40:50,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:40:50,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:40:50,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:40:50,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:40:50,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:40:50,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:40:50,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:40:50,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:40:50,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:40:50,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:40:50,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:40:50,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:40:50,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:40:50,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:40:50,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:40:50,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:40:50,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:40:50,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:40:50,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:40:50,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:40:50,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:40:50,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:40:50,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:40:50,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:40:50,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:40:50,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:40:50,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:40:50,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:40:50,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:40:50,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:40:50,968 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:40:50,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:40:50,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:40:50,969 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:40:50,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:40:50,970 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:40:50,970 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:40:50,970 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:40:50,970 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:40:50,971 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:40:50,971 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:40:50,971 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:40:50,971 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:40:50,972 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:40:50,972 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:40:50,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:40:50,973 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:40:50,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:40:50,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:40:50,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:40:50,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:40:50,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:40:50,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:40:50,974 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:40:50,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:40:50,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:40:50,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:40:50,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:40:50,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:40:50,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:40:50,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:40:50,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:40:50,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:40:50,976 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:40:50,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:40:50,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:40:50,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:40:50,977 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_a2536269-0e79-4685-93ad-f2d1ea6a2193/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 -> 1ca0873bbf5698fb1752ac7aba535da1c4a773e2 [2019-11-26 02:40:51,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:40:51,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:40:51,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:40:51,144 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:40:51,144 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:40:51,145 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c [2019-11-26 02:40:51,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/data/8bc547b46/6ae6dadebe584ef48a795eb5bb0612d5/FLAGd43474feb [2019-11-26 02:40:51,545 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:40:51,546 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/sv-benchmarks/c/loop-acceleration/underapprox_2-2.c [2019-11-26 02:40:51,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/data/8bc547b46/6ae6dadebe584ef48a795eb5bb0612d5/FLAGd43474feb [2019-11-26 02:40:51,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/data/8bc547b46/6ae6dadebe584ef48a795eb5bb0612d5 [2019-11-26 02:40:51,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:40:51,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:40:51,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:51,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:40:51,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:40:51,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b8f7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51, skipping insertion in model container [2019-11-26 02:40:51,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:40:51,598 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:40:51,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:51,782 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:40:51,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:40:51,882 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:40:51,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51 WrapperNode [2019-11-26 02:40:51,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:40:51,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:51,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:40:51,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:40:51,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:40:51,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:40:51,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:40:51,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:40:51,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... [2019-11-26 02:40:51,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:40:51,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:40:51,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:40:51,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:40:51,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/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 02:40:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:40:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:40:52,152 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:40:52,153 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:40:52,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:52 BoogieIcfgContainer [2019-11-26 02:40:52,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:40:52,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:40:52,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:40:52,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:40:52,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:40:51" (1/3) ... [2019-11-26 02:40:52,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70058d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:52, skipping insertion in model container [2019-11-26 02:40:52,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:40:51" (2/3) ... [2019-11-26 02:40:52,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70058d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:40:52, skipping insertion in model container [2019-11-26 02:40:52,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:52" (3/3) ... [2019-11-26 02:40:52,163 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2019-11-26 02:40:52,171 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:40:52,177 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:40:52,187 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:40:52,217 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:40:52,218 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:40:52,218 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:40:52,218 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:40:52,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:40:52,218 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:40:52,219 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:40:52,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:40:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-26 02:40:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:40:52,236 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:52,237 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:40:52,237 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:40:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:52,242 INFO L82 PathProgramCache]: Analyzing trace with hash 982688, now seen corresponding path program 1 times [2019-11-26 02:40:52,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:40:52,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372805620] [2019-11-26 02:40:52,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:40:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:40:52,422 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 02:40:52,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372805620] [2019-11-26 02:40:52,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:40:52,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:40:52,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975241734] [2019-11-26 02:40:52,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:40:52,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:40:52,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:40:52,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:40:52,469 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-26 02:40:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:40:52,489 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-26 02:40:52,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:40:52,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:40:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:40:52,499 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:40:52,499 INFO L226 Difference]: Without dead ends: 6 [2019-11-26 02:40:52,502 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 02:40:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-26 02:40:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-26 02:40:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-26 02:40:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-26 02:40:52,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-26 02:40:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:40:52,550 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-26 02:40:52,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:40:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-26 02:40:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:40:52,562 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:40:52,562 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:40:52,562 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:40:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:52,563 INFO L82 PathProgramCache]: Analyzing trace with hash 29879958, now seen corresponding path program 1 times [2019-11-26 02:40:52,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:40:52,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722202009] [2019-11-26 02:40:52,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:40:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:40:52,633 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 02:40:52,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722202009] [2019-11-26 02:40:52,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648969613] [2019-11-26 02:40:52,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/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 02:40:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:40:52,666 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:40:52,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:40:52,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:40:52,709 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 02:40:52,709 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:40:52,777 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 02:40:52,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [187939741] [2019-11-26 02:40:52,799 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-26 02:40:52,799 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:40:52,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:40:52,810 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:40:52,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:40:52,918 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:40:53,013 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:40:53,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:40:53,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 7 [2019-11-26 02:40:53,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167639898] [2019-11-26 02:40:53,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:40:53,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:40:53,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:40:53,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:40:53,016 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2019-11-26 02:40:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:40:53,123 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2019-11-26 02:40:53,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:40:53,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2019-11-26 02:40:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:40:53,124 INFO L225 Difference]: With dead ends: 9 [2019-11-26 02:40:53,124 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:40:53,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:40:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:40:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:40:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:40:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:40:53,126 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-26 02:40:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:40:53,127 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:40:53,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:40:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:40:53,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:40:53,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:40:53,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:40:53,364 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:40:53,364 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 02:40:53,364 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:40:53,365 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 02:40:53,365 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~x~0 4294967296))) (or (< .cse0 6) (= 6 .cse0))) [2019-11-26 02:40:53,365 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 02:40:53,365 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 1 20) the Hoare annotation is: true [2019-11-26 02:40:53,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:40:53 BoogieIcfgContainer [2019-11-26 02:40:53,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:40:53,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:40:53,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:40:53,383 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:40:53,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:40:52" (3/4) ... [2019-11-26 02:40:53,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:40:53,399 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:40:53,399 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:40:53,441 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a2536269-0e79-4685-93ad-f2d1ea6a2193/bin/utaipan/witness.graphml [2019-11-26 02:40:53,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:40:53,443 INFO L168 Benchmark]: Toolchain (without parser) took 1869.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -111.1 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:53,444 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:53,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -198.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:53,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.76 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 02:40:53,446 INFO L168 Benchmark]: Boogie Preprocessor took 12.82 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 02:40:53,450 INFO L168 Benchmark]: RCFGBuilder took 230.35 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:53,451 INFO L168 Benchmark]: TraceAbstraction took 1227.07 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: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:53,451 INFO L168 Benchmark]: Witness Printer took 59.23 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 02:40:53,457 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 309.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -198.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.76 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 12.82 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. * RCFGBuilder took 230.35 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1227.07 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: 70.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. * Witness Printer took 59.23 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. * 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: 14]: Loop Invariant Derived loop invariant: x % 4294967296 < 6 || 6 == x % 4294967296 - 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 1 SDslu, 5 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 2 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 11 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...