./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 301c54c8b861008a1cf318e5b7f3396bc86db7c8 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:15:21,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:15:21,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:15:21,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:15:21,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:15:21,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:15:21,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:15:21,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:15:21,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:15:21,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:15:21,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:15:21,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:15:21,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:15:21,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:15:21,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:15:21,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:15:21,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:15:21,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:15:21,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:15:21,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:15:21,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:15:21,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:15:21,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:15:21,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:15:21,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:15:21,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:15:21,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:15:21,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:15:21,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:15:21,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:15:21,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:15:21,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:15:21,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:15:21,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:15:21,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:15:21,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:15:21,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:15:21,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:15:21,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:15:21,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:15:21,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:15:21,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:15:21,739 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:15:21,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:15:21,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:15:21,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:15:21,751 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:15:21,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:15:21,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:15:21,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:15:21,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:15:21,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:15:21,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:15:21,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:15:21,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:15:21,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:15:21,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:15:21,754 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:15:21,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:15:21,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:15:21,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:15:21,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:15:21,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:15:21,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:15:21,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:15:21,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:15:21,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:15:21,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:15:21,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:15:21,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:15:21,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/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(__VERIFIER_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 -> 301c54c8b861008a1cf318e5b7f3396bc86db7c8 [2019-11-15 22:15:21,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:15:21,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:15:21,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:15:21,806 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:15:21,807 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:15:21,807 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2019-11-15 22:15:21,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/data/4fc9f86cc/721a534f722448a5a7012bd54591a483/FLAG99ed2fe9a [2019-11-15 22:15:22,211 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:15:22,212 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2019-11-15 22:15:22,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/data/4fc9f86cc/721a534f722448a5a7012bd54591a483/FLAG99ed2fe9a [2019-11-15 22:15:22,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/data/4fc9f86cc/721a534f722448a5a7012bd54591a483 [2019-11-15 22:15:22,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:15:22,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:15:22,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:15:22,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:15:22,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:15:22,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:22,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4146e191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22, skipping insertion in model container [2019-11-15 22:15:22,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:22,682 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:15:22,698 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:15:22,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:15:22,940 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:15:22,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:15:22,965 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:15:22,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22 WrapperNode [2019-11-15 22:15:22,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:15:22,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:15:22,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:15:22,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:15:22,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:22,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:22,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:15:22,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:15:22,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:15:22,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:15:23,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:23,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:23,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:23,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:23,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:23,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:23,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... [2019-11-15 22:15:23,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:15:23,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:15:23,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:15:23,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:15:23,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/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 [2019-11-15 22:15:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:15:23,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:15:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-15 22:15:23,054 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-15 22:15:23,170 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:15:23,170 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 22:15:23,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:15:23 BoogieIcfgContainer [2019-11-15 22:15:23,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:15:23,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:15:23,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:15:23,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:15:23,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:15:22" (1/3) ... [2019-11-15 22:15:23,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171afd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:15:23, skipping insertion in model container [2019-11-15 22:15:23,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:15:22" (2/3) ... [2019-11-15 22:15:23,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171afd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:15:23, skipping insertion in model container [2019-11-15 22:15:23,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:15:23" (3/3) ... [2019-11-15 22:15:23,178 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-2.c [2019-11-15 22:15:23,187 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:15:23,192 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:15:23,202 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:15:23,222 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:15:23,223 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:15:23,223 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:15:23,223 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:15:23,223 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:15:23,223 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:15:23,223 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:15:23,223 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:15:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-15 22:15:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 22:15:23,243 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:15:23,244 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:15:23,245 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:15:23,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:15:23,250 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-11-15 22:15:23,258 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:15:23,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925516015] [2019-11-15 22:15:23,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:15:23,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:15:23,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:15:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:15:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:15:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:15:23,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925516015] [2019-11-15 22:15:23,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:15:23,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:15:23,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679756880] [2019-11-15 22:15:23,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:15:23,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:15:23,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:15:23,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:15:23,670 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 6 states. [2019-11-15 22:15:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:15:23,806 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-11-15 22:15:23,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:15:23,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-15 22:15:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:15:23,818 INFO L225 Difference]: With dead ends: 27 [2019-11-15 22:15:23,818 INFO L226 Difference]: Without dead ends: 14 [2019-11-15 22:15:23,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:15:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-15 22:15:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-15 22:15:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 22:15:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-15 22:15:23,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-11-15 22:15:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:15:23,858 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-15 22:15:23,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:15:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-15 22:15:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 22:15:23,859 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:15:23,860 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:15:23,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:15:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:15:23,860 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-11-15 22:15:23,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:15:23,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196382287] [2019-11-15 22:15:23,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:15:23,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:15:23,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:15:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:15:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:15:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:15:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 22:15:24,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196382287] [2019-11-15 22:15:24,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470341755] [2019-11-15 22:15:24,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/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 [2019-11-15 22:15:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:15:24,276 WARN L254 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-15 22:15:24,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:15:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 22:15:24,462 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:15:24,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-15 22:15:24,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373590945] [2019-11-15 22:15:24,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 22:15:24,465 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:15:24,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 22:15:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:15:24,467 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 12 states. [2019-11-15 22:15:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:15:24,675 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-15 22:15:24,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 22:15:24,676 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-11-15 22:15:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:15:24,677 INFO L225 Difference]: With dead ends: 19 [2019-11-15 22:15:24,677 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:15:24,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2019-11-15 22:15:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:15:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:15:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:15:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:15:24,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-15 22:15:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:15:24,679 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:15:24,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 22:15:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:15:24,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:15:24,885 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:15:24,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 22:15:24,915 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 22:15:24,915 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 22:15:24,916 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 22:15:24,916 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-15 22:15:24,916 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-11-15 22:15:24,916 INFO L446 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: true [2019-11-15 22:15:24,916 INFO L443 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-11-15 22:15:24,916 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 19) no Hoare annotation was computed. [2019-11-15 22:15:24,916 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2019-11-15 22:15:24,917 INFO L443 ceAbstractionStarter]: For program point sumEXIT(lines 4 10) no Hoare annotation was computed. [2019-11-15 22:15:24,917 INFO L439 ceAbstractionStarter]: At program point L8(line 8) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|)) [2019-11-15 22:15:24,917 INFO L443 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2019-11-15 22:15:24,917 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 9) no Hoare annotation was computed. [2019-11-15 22:15:24,917 INFO L443 ceAbstractionStarter]: For program point sumFINAL(lines 4 10) no Hoare annotation was computed. [2019-11-15 22:15:24,917 INFO L446 ceAbstractionStarter]: At program point sumENTRY(lines 4 10) the Hoare annotation is: true [2019-11-15 22:15:24,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:15:24 BoogieIcfgContainer [2019-11-15 22:15:24,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:15:24,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:15:24,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:15:24,920 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:15:24,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:15:23" (3/4) ... [2019-11-15 22:15:24,928 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:15:24,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2019-11-15 22:15:24,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-15 22:15:24,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 22:15:24,974 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fa9e9aa0-9d8b-4e1a-b643-535371c87ef6/bin/uautomizer/witness.graphml [2019-11-15 22:15:24,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:15:24,976 INFO L168 Benchmark]: Toolchain (without parser) took 2318.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -56.8 MB). Peak memory consumption was 83.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:15:24,976 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:15:24,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:15:24,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:15:24,978 INFO L168 Benchmark]: Boogie Preprocessor took 12.77 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. [2019-11-15 22:15:24,978 INFO L168 Benchmark]: RCFGBuilder took 164.10 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:15:24,979 INFO L168 Benchmark]: TraceAbstraction took 1747.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:15:24,979 INFO L168 Benchmark]: Witness Printer took 54.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:15:24,982 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.77 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 164.10 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1747.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. * Witness Printer took 54.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 12 SDslu, 40 SDs, 0 SdLazy, 87 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 4688 SizeOfPredicates, 7 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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...