./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/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 243aabcd2dba446bff3e5c5a4012e6e80ddc3b51 ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 11:54:22,679 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:54:22,680 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:54:22,688 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:54:22,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:54:22,689 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:54:22,690 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:54:22,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:54:22,691 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:54:22,692 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:54:22,692 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:54:22,692 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:54:22,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:54:22,693 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:54:22,694 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:54:22,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:54:22,695 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:54:22,696 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:54:22,697 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:54:22,698 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:54:22,699 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:54:22,699 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:54:22,700 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:54:22,700 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:54:22,701 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:54:22,701 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:54:22,702 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:54:22,703 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:54:22,703 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:54:22,704 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:54:22,704 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:54:22,705 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:54:22,705 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:54:22,705 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:54:22,706 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:54:22,706 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:54:22,707 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 11:54:22,714 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:54:22,715 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:54:22,715 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:54:22,715 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:54:22,716 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 11:54:22,716 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 11:54:22,716 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 11:54:22,716 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 11:54:22,716 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 11:54:22,716 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 11:54:22,716 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 11:54:22,717 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 11:54:22,717 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 11:54:22,717 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:54:22,717 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:54:22,718 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:54:22,719 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:54:22,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:54:22,719 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:54:22,719 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:54:22,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:54:22,719 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:54:22,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:54:22,720 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:54:22,720 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:54:22,720 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:54:22,720 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 11:54:22,720 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:54:22,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 11:54:22,720 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 11:54:22,720 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_55c45772-2161-4cc5-9a60-fcb7a417831b/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 -> 243aabcd2dba446bff3e5c5a4012e6e80ddc3b51 [2018-11-23 11:54:22,746 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:54:22,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:54:22,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:54:22,758 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:54:22,758 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:54:22,759 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/../../sv-benchmarks/c/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-23 11:54:22,803 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/data/9db5814f0/b1cfa2d6e4ea475dad55b7bbf2de00b9/FLAGcf432b7af [2018-11-23 11:54:23,119 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:54:23,120 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/sv-benchmarks/c/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-23 11:54:23,125 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/data/9db5814f0/b1cfa2d6e4ea475dad55b7bbf2de00b9/FLAGcf432b7af [2018-11-23 11:54:23,566 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/data/9db5814f0/b1cfa2d6e4ea475dad55b7bbf2de00b9 [2018-11-23 11:54:23,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:54:23,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:54:23,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:54:23,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:54:23,572 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:54:23,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b7d795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23, skipping insertion in model container [2018-11-23 11:54:23,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:54:23,591 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:54:23,693 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:54:23,695 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:54:23,704 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:54:23,713 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:54:23,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23 WrapperNode [2018-11-23 11:54:23,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:54:23,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:54:23,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:54:23,714 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:54:23,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:54:23,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:54:23,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:54:23,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:54:23,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... [2018-11-23 11:54:23,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:54:23,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:54:23,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:54:23,739 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:54:23,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/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 [2018-11-23 11:54:23,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:54:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:54:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:54:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:54:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:54:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:54:23,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 11:54:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 11:54:23,902 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:54:23,902 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 11:54:23,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:54:23 BoogieIcfgContainer [2018-11-23 11:54:23,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:54:23,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:54:23,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:54:23,905 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:54:23,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:54:23" (1/3) ... [2018-11-23 11:54:23,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af92fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:54:23, skipping insertion in model container [2018-11-23 11:54:23,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:54:23" (2/3) ... [2018-11-23 11:54:23,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af92fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:54:23, skipping insertion in model container [2018-11-23 11:54:23,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:54:23" (3/3) ... [2018-11-23 11:54:23,907 INFO L112 eAbstractionObserver]: Analyzing ICFG const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-23 11:54:23,913 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:54:23,919 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 11:54:23,929 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 11:54:23,955 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:54:23,955 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:54:23,955 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:54:23,955 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:54:23,955 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:54:23,955 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:54:23,956 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:54:23,956 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:54:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-23 11:54:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 11:54:23,973 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:54:23,973 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:54:23,975 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:54:23,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:54:23,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1311776583, now seen corresponding path program 1 times [2018-11-23 11:54:23,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:54:24,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:54:24,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:54:24,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:54:24,017 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:54:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:54:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:54:24,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:54:24,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 11:54:24,117 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 11:54:24,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 11:54:24,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 11:54:24,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 11:54:24,129 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-11-23 11:54:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:54:24,146 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2018-11-23 11:54:24,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 11:54:24,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-23 11:54:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:54:24,152 INFO L225 Difference]: With dead ends: 35 [2018-11-23 11:54:24,153 INFO L226 Difference]: Without dead ends: 15 [2018-11-23 11:54:24,155 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 11:54:24,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-23 11:54:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-23 11:54:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 11:54:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-11-23 11:54:24,179 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-11-23 11:54:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:54:24,179 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-11-23 11:54:24,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 11:54:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-11-23 11:54:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 11:54:24,180 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:54:24,180 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:54:24,180 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:54:24,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:54:24,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1254518281, now seen corresponding path program 1 times [2018-11-23 11:54:24,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:54:24,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:54:24,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:54:24,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:54:24,182 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:54:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:54:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:54:24,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:54:24,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 11:54:24,226 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 11:54:24,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 11:54:24,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 11:54:24,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 11:54:24,228 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2018-11-23 11:54:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:54:24,250 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2018-11-23 11:54:24,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 11:54:24,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-23 11:54:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:54:24,251 INFO L225 Difference]: With dead ends: 15 [2018-11-23 11:54:24,251 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 11:54:24,251 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 11:54:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 11:54:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 11:54:24,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 11:54:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 11:54:24,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-23 11:54:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:54:24,252 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:54:24,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 11:54:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 11:54:24,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:54:24,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 11:54:24,289 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 11:54:24,290 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:54:24,290 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:54:24,290 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 11:54:24,290 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 11:54:24,290 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 11:54:24,290 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed. [2018-11-23 11:54:24,290 INFO L444 ceAbstractionStarter]: At program point L15(lines 11 18) the Hoare annotation is: (let ((.cse0 (div main_~s~0 4294967296))) (and (= main_~s~0 (* 4294967296 .cse0)) (< 0 (+ .cse0 1)))) [2018-11-23 11:54:24,290 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point L11-2(lines 11 18) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true [2018-11-23 11:54:24,291 INFO L444 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: (let ((.cse0 (div main_~s~0 4294967296))) (and (= main_~s~0 (* 4294967296 .cse0)) (< 0 (+ .cse0 1)))) [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point L12-2(lines 11 18) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-23 11:54:24,291 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-23 11:54:24,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:54:24 BoogieIcfgContainer [2018-11-23 11:54:24,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 11:54:24,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 11:54:24,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 11:54:24,300 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 11:54:24,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:54:23" (3/4) ... [2018-11-23 11:54:24,304 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 11:54:24,308 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 11:54:24,308 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 11:54:24,309 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 11:54:24,311 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-23 11:54:24,312 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 11:54:24,312 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 11:54:24,337 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_55c45772-2161-4cc5-9a60-fcb7a417831b/bin-2019/utaipan/witness.graphml [2018-11-23 11:54:24,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 11:54:24,338 INFO L168 Benchmark]: Toolchain (without parser) took 769.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -112.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-11-23 11:54:24,339 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:54:24,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.07 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:54:24,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.71 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 11:54:24,339 INFO L168 Benchmark]: Boogie Preprocessor took 12.25 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:54:24,340 INFO L168 Benchmark]: RCFGBuilder took 164.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-23 11:54:24,340 INFO L168 Benchmark]: TraceAbstraction took 396.62 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-23 11:54:24,340 INFO L168 Benchmark]: Witness Printer took 37.16 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. [2018-11-23 11:54:24,342 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 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.07 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.71 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.25 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 164.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -171.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 396.62 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 37.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: s == 4294967296 * (s / 4294967296) && 0 < s / 4294967296 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 13 SDslu, 35 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 35 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 726 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...