./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum03-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum03-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99fb7db18985aa376eea162ee528744f913aa340 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:58:34,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:34,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:34,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:34,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:34,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:34,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:34,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:34,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:34,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:34,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:34,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:34,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:34,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:34,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:34,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:34,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:34,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:34,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:34,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:34,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:34,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:34,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:34,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:34,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:34,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:34,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:34,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:34,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:34,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:34,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:34,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:34,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:34,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:34,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:34,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:34,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:34,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:34,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:34,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:34,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:34,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:35,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:35,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:35,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:35,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:35,021 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:35,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:35,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:35,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:35,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:35,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:35,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:35,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:35,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:35,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:35,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:35,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:35,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:35,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:35,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:35,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:35,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:35,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:35,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:35,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:35,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:35,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:35,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:35,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:35,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:35,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99fb7db18985aa376eea162ee528744f913aa340 [2020-11-28 02:58:35,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:35,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:35,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:35,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:35,349 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:35,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/../../sv-benchmarks/c/loops/sum03-2.i [2020-11-28 02:58:35,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/data/c7c5cfc14/d76622360f5f462887350d2715c739ee/FLAG2b8be82a4 [2020-11-28 02:58:36,028 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:36,029 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/sv-benchmarks/c/loops/sum03-2.i [2020-11-28 02:58:36,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/data/c7c5cfc14/d76622360f5f462887350d2715c739ee/FLAG2b8be82a4 [2020-11-28 02:58:36,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/data/c7c5cfc14/d76622360f5f462887350d2715c739ee [2020-11-28 02:58:36,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:36,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:36,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:36,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:36,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:36,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f465f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36, skipping insertion in model container [2020-11-28 02:58:36,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:36,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:36,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:36,658 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:36,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:36,689 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:36,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36 WrapperNode [2020-11-28 02:58:36,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:36,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:36,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:36,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:36,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:36,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:36,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:36,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:36,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... [2020-11-28 02:58:36,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:36,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:36,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:36,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:36,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/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 [2020-11-28 02:58:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:36,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:37,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:37,119 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 02:58:37,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:37 BoogieIcfgContainer [2020-11-28 02:58:37,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:37,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:37,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:37,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:37,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:36" (1/3) ... [2020-11-28 02:58:37,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec589a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:37, skipping insertion in model container [2020-11-28 02:58:37,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:36" (2/3) ... [2020-11-28 02:58:37,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec589a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:37, skipping insertion in model container [2020-11-28 02:58:37,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:37" (3/3) ... [2020-11-28 02:58:37,139 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2020-11-28 02:58:37,156 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:37,170 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:37,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:58:37,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:37,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:37,257 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:37,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:37,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:37,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:37,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:37,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 02:58:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:58:37,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:37,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:37,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:37,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1810660491, now seen corresponding path program 1 times [2020-11-28 02:58:37,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:37,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108251171] [2020-11-28 02:58:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:37,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108251171] [2020-11-28 02:58:37,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:37,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:37,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585183713] [2020-11-28 02:58:37,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:37,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:37,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:37,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:37,791 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-11-28 02:58:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:37,840 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2020-11-28 02:58:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:37,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 02:58:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:37,851 INFO L225 Difference]: With dead ends: 20 [2020-11-28 02:58:37,852 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 02:58:37,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 02:58:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:58:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:58:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 02:58:37,889 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2020-11-28 02:58:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:37,889 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 02:58:37,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 02:58:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:58:37,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:37,890 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:37,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:37,891 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:37,892 INFO L82 PathProgramCache]: Analyzing trace with hash 950324699, now seen corresponding path program 1 times [2020-11-28 02:58:37,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:37,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162651343] [2020-11-28 02:58:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:38,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162651343] [2020-11-28 02:58:38,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518472339] [2020-11-28 02:58:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/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 [2020-11-28 02:58:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:38,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 02:58:38,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:38,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:58:38,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-28 02:58:38,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333648858] [2020-11-28 02:58:38,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:58:38,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:58:38,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:58:38,207 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2020-11-28 02:58:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:38,300 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-28 02:58:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:38,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 02:58:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:38,302 INFO L225 Difference]: With dead ends: 11 [2020-11-28 02:58:38,302 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:38,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:58:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:38,304 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 02:58:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:38,304 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:38,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:58:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:38,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:38,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:58:38,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:58:38,625 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:58:38,626 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-28 02:58:38,626 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:58:38,626 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:58:38,626 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:58:38,626 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 02:58:38,626 INFO L274 CegarLoopResult]: For program point L20(lines 20 29) no Hoare annotation was computed. [2020-11-28 02:58:38,627 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-11-28 02:58:38,627 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 02:58:38,627 INFO L270 CegarLoopResult]: At program point L14-2(lines 13 28) the Hoare annotation is: (or (let ((.cse0 (* 2 ULTIMATE.start_main_~x~0))) (and (<= ULTIMATE.start_main_~sn~0 .cse0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= .cse0 ULTIMATE.start_main_~sn~0))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~sn~0 0))) [2020-11-28 02:58:38,627 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 02:58:38,627 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 02:58:38,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:38 BoogieIcfgContainer [2020-11-28 02:58:38,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:38,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:38,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:38,651 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:38,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:37" (3/4) ... [2020-11-28 02:58:38,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:38,671 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 02:58:38,672 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:58:38,673 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:38,673 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:38,710 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15e9ab75-d20c-44da-bce6-1260d9284580/bin/uautomizer/witness.graphml [2020-11-28 02:58:38,710 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:38,712 INFO L168 Benchmark]: Toolchain (without parser) took 2338.04 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.5 MB in the beginning and 70.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:38,713 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:38,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.88 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 77.1 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:38,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:38,715 INFO L168 Benchmark]: Boogie Preprocessor took 23.01 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:38,716 INFO L168 Benchmark]: RCFGBuilder took 364.62 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 64.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:38,717 INFO L168 Benchmark]: TraceAbstraction took 1526.17 ms. Allocated memory is still 100.7 MB. Free memory was 63.8 MB in the beginning and 72.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:38,718 INFO L168 Benchmark]: Witness Printer took 60.36 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 70.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:38,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory is still 40.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.88 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 55.2 MB in the beginning and 77.1 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 75.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.01 ms. Allocated memory is still 100.7 MB. Free memory was 75.8 MB in the beginning and 74.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 364.62 ms. Allocated memory is still 100.7 MB. Free memory was 74.7 MB in the beginning and 64.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1526.17 ms. Allocated memory is still 100.7 MB. Free memory was 63.8 MB in the beginning and 72.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.36 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 70.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((sn <= 2 * x && 1 <= cond) && 2 * x <= sn) || (x == 0 && sn == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 5 SDslu, 15 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 22 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 4 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...