./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_2_true-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_2_true-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38eaba8d64f477684f2f9d73b6277bf5294da706 .................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:19:44,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:19:44,737 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:19:44,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:19:44,745 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:19:44,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:19:44,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:19:44,748 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:19:44,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:19:44,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:19:44,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:19:44,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:19:44,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:19:44,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:19:44,753 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:19:44,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:19:44,755 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:19:44,756 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:19:44,757 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:19:44,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:19:44,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:19:44,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:19:44,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:19:44,761 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:19:44,761 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:19:44,762 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:19:44,762 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:19:44,763 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:19:44,763 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:19:44,764 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:19:44,764 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:19:44,764 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:19:44,764 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:19:44,764 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:19:44,765 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:19:44,765 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:19:44,765 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 14:19:44,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:19:44,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:19:44,774 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:19:44,774 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 14:19:44,774 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 14:19:44,774 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 14:19:44,774 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 14:19:44,774 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 14:19:44,774 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 14:19:44,775 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 14:19:44,775 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 14:19:44,775 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 14:19:44,775 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 14:19:44,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:19:44,776 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:19:44,776 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:19:44,776 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:19:44,776 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:19:44,776 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:19:44,776 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:19:44,776 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:19:44,777 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:19:44,777 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:19:44,777 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:19:44,777 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:19:44,777 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:19:44,777 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:19:44,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:19:44,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:19:44,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:19:44,778 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:19:44,778 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:19:44,778 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:19:44,778 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 14:19:44,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:19:44,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:19:44,778 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 14:19:44,779 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38eaba8d64f477684f2f9d73b6277bf5294da706 [2018-11-18 14:19:44,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:19:44,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:19:44,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:19:44,819 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:19:44,819 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:19:44,820 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/../../sv-benchmarks/c/loops/while_infinite_loop_2_true-unreach-call_false-termination.i [2018-11-18 14:19:44,861 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/data/dd269540f/8fb24b3cf31f48d095ab332f59e6e8c9/FLAG2a3374917 [2018-11-18 14:19:45,257 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:19:45,257 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/sv-benchmarks/c/loops/while_infinite_loop_2_true-unreach-call_false-termination.i [2018-11-18 14:19:45,261 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/data/dd269540f/8fb24b3cf31f48d095ab332f59e6e8c9/FLAG2a3374917 [2018-11-18 14:19:45,272 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/data/dd269540f/8fb24b3cf31f48d095ab332f59e6e8c9 [2018-11-18 14:19:45,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:19:45,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:19:45,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:19:45,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:19:45,279 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:19:45,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49fe5536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45, skipping insertion in model container [2018-11-18 14:19:45,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:19:45,300 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:19:45,397 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:19:45,399 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:19:45,407 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:19:45,414 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:19:45,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45 WrapperNode [2018-11-18 14:19:45,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:19:45,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:19:45,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:19:45,415 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:19:45,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:19:45,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:19:45,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:19:45,432 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:19:45,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... [2018-11-18 14:19:45,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:19:45,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:19:45,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:19:45,448 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:19:45,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/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 [2018-11-18 14:19:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:19:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:19:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:19:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:19:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:19:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:19:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 14:19:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 14:19:45,657 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:19:45,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:19:45 BoogieIcfgContainer [2018-11-18 14:19:45,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:19:45,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:19:45,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:19:45,662 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:19:45,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:19:45" (1/3) ... [2018-11-18 14:19:45,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd1869b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:19:45, skipping insertion in model container [2018-11-18 14:19:45,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:19:45" (2/3) ... [2018-11-18 14:19:45,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd1869b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:19:45, skipping insertion in model container [2018-11-18 14:19:45,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:19:45" (3/3) ... [2018-11-18 14:19:45,665 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_2_true-unreach-call_false-termination.i [2018-11-18 14:19:45,674 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:19:45,678 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:19:45,689 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:19:45,715 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:19:45,716 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:19:45,716 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:19:45,716 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:19:45,716 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:19:45,716 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:19:45,716 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:19:45,716 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:19:45,731 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 14:19:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 14:19:45,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:19:45,737 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:19:45,739 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:19:45,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:19:45,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1870526464, now seen corresponding path program 1 times [2018-11-18 14:19:45,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:19:45,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:19:45,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:19:45,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:19:45,786 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:19:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:19:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:19:45,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:19:45,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:19:45,833 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:19:45,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:19:45,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:19:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:19:45,850 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 14:19:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:19:45,869 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2018-11-18 14:19:45,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:19:45,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 14:19:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:19:45,877 INFO L225 Difference]: With dead ends: 28 [2018-11-18 14:19:45,878 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 14:19:45,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:19:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 14:19:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 14:19:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 14:19:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 14:19:45,911 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-11-18 14:19:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:19:45,911 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 14:19:45,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:19:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 14:19:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 14:19:45,912 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:19:45,913 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:19:45,913 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:19:45,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:19:45,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1863838843, now seen corresponding path program 1 times [2018-11-18 14:19:45,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:19:45,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:19:45,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:19:45,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:19:45,914 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:19:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:19:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:19:46,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:19:46,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 14:19:46,005 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:19:46,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 14:19:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 14:19:46,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:19:46,007 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-11-18 14:19:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:19:46,094 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-18 14:19:46,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:19:46,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 14:19:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:19:46,095 INFO L225 Difference]: With dead ends: 14 [2018-11-18 14:19:46,095 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 14:19:46,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:19:46,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 14:19:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 14:19:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 14:19:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 14:19:46,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-18 14:19:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:19:46,097 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:19:46,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 14:19:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 14:19:46,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 14:19:46,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 14:19:46,127 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 14:19:46,127 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:19:46,127 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:19:46,127 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 14:19:46,127 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 14:19:46,127 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 14:19:46,128 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true [2018-11-18 14:19:46,128 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed. [2018-11-18 14:19:46,128 INFO L421 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 0) [2018-11-18 14:19:46,128 INFO L421 ceAbstractionStarter]: At program point L14-1(lines 12 15) the Hoare annotation is: (= main_~x~0 0) [2018-11-18 14:19:46,128 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 18) no Hoare annotation was computed. [2018-11-18 14:19:46,128 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2018-11-18 14:19:46,128 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 15) the Hoare annotation is: false [2018-11-18 14:19:46,129 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 14:19:46,129 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 14:19:46,129 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 14:19:46,129 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 14:19:46,129 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 14:19:46,129 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 14:19:46,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:19:46 BoogieIcfgContainer [2018-11-18 14:19:46,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:19:46,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:19:46,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:19:46,138 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:19:46,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:19:45" (3/4) ... [2018-11-18 14:19:46,141 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 14:19:46,145 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 14:19:46,146 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 14:19:46,146 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 14:19:46,148 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 14:19:46,148 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 14:19:46,148 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 14:19:46,176 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ed8aa782-7250-48a9-8c12-2469fbe68780/bin-2019/utaipan/witness.graphml [2018-11-18 14:19:46,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:19:46,176 INFO L168 Benchmark]: Toolchain (without parser) took 901.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -140.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:19:46,178 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:19:46,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.15 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:19:46,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.94 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:19:46,179 INFO L168 Benchmark]: Boogie Preprocessor took 16.34 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:19:46,179 INFO L168 Benchmark]: RCFGBuilder took 209.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 14:19:46,179 INFO L168 Benchmark]: TraceAbstraction took 479.31 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2018-11-18 14:19:46,180 INFO L168 Benchmark]: Witness Printer took 37.87 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:19:46,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.15 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 943.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.94 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.34 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 479.31 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: 30.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. * Witness Printer took 37.87 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 5 SDslu, 21 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...