./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark14_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark14_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 508cc4537bb2aef4b1661457509d80364f4d0fc9 ........................................................................................................................................................................................................................................................................................................................... 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 07:41:22,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:22,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:22,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:22,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:22,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:22,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:22,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:22,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:22,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:22,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:22,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:22,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:22,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:22,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:22,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:22,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:22,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:22,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:22,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:22,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:22,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:22,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:22,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:22,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:22,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:22,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:22,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:22,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:22,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:22,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:22,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:22,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:22,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:22,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:22,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:22,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:22,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:22,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:22,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:22,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:22,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-28 07:41:22,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:22,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:22,333 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:22,333 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:22,334 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:22,334 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:22,334 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:22,334 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:22,334 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:22,335 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:22,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:22,336 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:22,336 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:22,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:22,337 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:22,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:22,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:22,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:41:22,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:22,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:22,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:22,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:41:22,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:22,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:41:22,339 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:41:22,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:22,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:41:22,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:22,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:41:22,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:22,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:22,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:22,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:22,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:22,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:22,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:41:22,342 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:22,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:22,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:41:22,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:22,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:22,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 508cc4537bb2aef4b1661457509d80364f4d0fc9 [2020-11-28 07:41:22,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:22,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:22,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:22,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:22,711 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:22,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark14_linear.i [2020-11-28 07:41:22,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/data/204060e97/4576b43cc2ad44d383aa0b57b101073d/FLAG07d8a344c [2020-11-28 07:41:23,312 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:23,312 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/sv-benchmarks/c/loop-zilu/benchmark14_linear.i [2020-11-28 07:41:23,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/data/204060e97/4576b43cc2ad44d383aa0b57b101073d/FLAG07d8a344c [2020-11-28 07:41:23,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/data/204060e97/4576b43cc2ad44d383aa0b57b101073d [2020-11-28 07:41:23,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:23,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:23,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:23,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:23,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:23,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18393cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23, skipping insertion in model container [2020-11-28 07:41:23,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:23,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:23,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:23,904 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:23,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:23,932 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:23,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23 WrapperNode [2020-11-28 07:41:23,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:23,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:23,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:23,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:23,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:23,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:23,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:23,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:23,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:24,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:24,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:24,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:24,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:24,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/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 [2020-11-28 07:41:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:41:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:24,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:24,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:24,574 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:24,574 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:41:24,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:24 BoogieIcfgContainer [2020-11-28 07:41:24,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:24,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:24,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:24,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:24,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:23" (1/3) ... [2020-11-28 07:41:24,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d73bf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:24, skipping insertion in model container [2020-11-28 07:41:24,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (2/3) ... [2020-11-28 07:41:24,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d73bf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:24, skipping insertion in model container [2020-11-28 07:41:24,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:24" (3/3) ... [2020-11-28 07:41:24,586 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark14_linear.i [2020-11-28 07:41:24,597 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:24,601 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:41:24,612 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:41:24,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:24,648 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:41:24,648 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:24,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:24,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:24,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:24,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:24,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-28 07:41:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:41:24,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:24,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:41:24,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:41:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:24,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2152192, now seen corresponding path program 1 times [2020-11-28 07:41:24,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:24,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695343501] [2020-11-28 07:41:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:24,886 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 07:41:24,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695343501] [2020-11-28 07:41:24,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:24,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:41:24,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124829896] [2020-11-28 07:41:24,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:24,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:24,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:24,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:24,918 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-11-28 07:41:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:24,991 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-28 07:41:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:24,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:41:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:25,001 INFO L225 Difference]: With dead ends: 11 [2020-11-28 07:41:25,001 INFO L226 Difference]: Without dead ends: 6 [2020-11-28 07:41:25,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:41:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-28 07:41:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-28 07:41:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 07:41:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-28 07:41:25,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-28 07:41:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:25,042 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-28 07:41:25,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:25,042 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-28 07:41:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:41:25,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:25,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:41:25,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:41:25,043 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:41:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:25,044 INFO L82 PathProgramCache]: Analyzing trace with hash 66718002, now seen corresponding path program 1 times [2020-11-28 07:41:25,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:41:25,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971240054] [2020-11-28 07:41:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:41:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:25,080 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 07:41:25,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971240054] [2020-11-28 07:41:25,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:25,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:41:25,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938727099] [2020-11-28 07:41:25,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:25,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:41:25,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:25,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:25,084 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2020-11-28 07:41:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:25,110 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2020-11-28 07:41:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:25,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:41:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:25,111 INFO L225 Difference]: With dead ends: 6 [2020-11-28 07:41:25,111 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:41:25,112 INFO L677 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 [2020-11-28 07:41:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:41:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:41:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:41:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:41:25,113 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2020-11-28 07:41:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:25,113 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:41:25,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:41:25,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:41:25,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:41:25,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:41:25,132 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:41:25,132 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:41:25,132 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 07:41:25,133 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-28 07:41:25,133 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-28 07:41:25,133 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:41:25,133 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:41:25,133 INFO L277 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2020-11-28 07:41:25,134 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 200) [2020-11-28 07:41:25,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:25 BoogieIcfgContainer [2020-11-28 07:41:25,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:25,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:25,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:25,155 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:25,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:24" (3/4) ... [2020-11-28 07:41:25,160 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:41:25,170 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:41:25,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:41:25,179 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:25,179 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:41:25,238 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_36601a78-c624-42dd-b33e-fec3cc9fcbc1/bin/utaipan/witness.graphml [2020-11-28 07:41:25,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:25,241 INFO L168 Benchmark]: Toolchain (without parser) took 1569.81 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 54.5 MB in the beginning and 73.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:25,242 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:25,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.65 ms. Allocated memory is still 86.0 MB. Free memory was 54.3 MB in the beginning and 63.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:25,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 62.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:25,244 INFO L168 Benchmark]: Boogie Preprocessor took 37.28 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 61.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:25,245 INFO L168 Benchmark]: RCFGBuilder took 571.97 ms. Allocated memory is still 86.0 MB. Free memory was 61.5 MB in the beginning and 46.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:25,246 INFO L168 Benchmark]: TraceAbstraction took 575.95 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.2 MB in the beginning and 76.0 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:25,246 INFO L168 Benchmark]: Witness Printer took 84.36 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 73.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:25,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.65 ms. Allocated memory is still 86.0 MB. Free memory was 54.3 MB in the beginning and 63.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 62.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.28 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 61.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 571.97 ms. Allocated memory is still 86.0 MB. Free memory was 61.5 MB in the beginning and 46.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 575.95 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 46.2 MB in the beginning and 76.0 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 84.36 ms. Allocated memory is still 109.1 MB. Free memory was 76.0 MB in the beginning and 73.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: i <= 200 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 3 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...