./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/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 758e11db5477313a713e54f54bb9ddc1e042288b .............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:08:04,827 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:08:04,828 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:08:04,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:08:04,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:08:04,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:08:04,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:08:04,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:08:04,837 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:08:04,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:08:04,837 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:08:04,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:08:04,838 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:08:04,838 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:08:04,839 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:08:04,839 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:08:04,840 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:08:04,840 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:08:04,841 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:08:04,842 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:08:04,843 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:08:04,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:08:04,844 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:08:04,844 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:08:04,844 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:08:04,845 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:08:04,845 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:08:04,846 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:08:04,846 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:08:04,847 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:08:04,847 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:08:04,847 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:08:04,847 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:08:04,847 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:08:04,848 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:08:04,848 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:08:04,848 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:08:04,855 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:08:04,855 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:08:04,856 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:08:04,856 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:08:04,856 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:08:04,856 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:08:04,856 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:08:04,856 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:08:04,856 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:08:04,856 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:08:04,856 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:08:04,857 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:08:04,857 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:08:04,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:08:04,857 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:08:04,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:08:04,857 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:08:04,857 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:08:04,857 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:08:04,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:08:04,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:08:04,858 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:08:04,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:08:04,859 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:08:04,859 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:08:04,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:08:04,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:08:04,859 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:08:04,859 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_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/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 -> 758e11db5477313a713e54f54bb9ddc1e042288b [2018-12-09 19:08:04,876 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:08:04,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:08:04,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:08:04,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:08:04,886 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:08:04,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/../../sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i [2018-12-09 19:08:04,921 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/data/3004261c5/69c37135c09a4b12b8c699508203ad2a/FLAGcde791668 [2018-12-09 19:08:05,364 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:08:05,364 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i [2018-12-09 19:08:05,367 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/data/3004261c5/69c37135c09a4b12b8c699508203ad2a/FLAGcde791668 [2018-12-09 19:08:05,759 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/data/3004261c5/69c37135c09a4b12b8c699508203ad2a [2018-12-09 19:08:05,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:08:05,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:08:05,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:08:05,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:08:05,766 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:08:05,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dabb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05, skipping insertion in model container [2018-12-09 19:08:05,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:08:05,784 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:08:05,873 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:08:05,875 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:08:05,883 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:08:05,890 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:08:05,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05 WrapperNode [2018-12-09 19:08:05,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:08:05,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:08:05,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:08:05,891 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:08:05,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:08:05,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:08:05,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:08:05,902 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:08:05,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... [2018-12-09 19:08:05,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:08:05,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:08:05,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:08:05,913 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:08:05,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/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 [2018-12-09 19:08:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:08:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:08:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:08:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:08:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:08:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:08:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 19:08:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 19:08:06,044 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:08:06,045 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 19:08:06,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:06 BoogieIcfgContainer [2018-12-09 19:08:06,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:08:06,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:08:06,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:08:06,047 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:08:06,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:08:05" (1/3) ... [2018-12-09 19:08:06,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d39bb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:08:06, skipping insertion in model container [2018-12-09 19:08:06,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:05" (2/3) ... [2018-12-09 19:08:06,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d39bb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:08:06, skipping insertion in model container [2018-12-09 19:08:06,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:06" (3/3) ... [2018-12-09 19:08:06,049 INFO L112 eAbstractionObserver]: Analyzing ICFG overflow_true-unreach-call1.i [2018-12-09 19:08:06,054 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:08:06,058 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:08:06,067 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:08:06,084 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:08:06,084 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:08:06,084 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:08:06,084 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:08:06,085 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:08:06,085 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:08:06,085 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:08:06,085 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:08:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-09 19:08:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:08:06,098 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:08:06,098 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:08:06,099 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:08:06,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:08:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-09 19:08:06,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:08:06,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:08:06,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:08:06,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:08:06,132 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:08:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:08:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:08:06,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:08:06,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:08:06,211 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:08:06,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:08:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:08:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:08:06,223 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-12-09 19:08:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:08:06,240 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-12-09 19:08:06,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:08:06,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 19:08:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:08:06,245 INFO L225 Difference]: With dead ends: 29 [2018-12-09 19:08:06,246 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 19:08:06,247 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:08:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 19:08:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 19:08:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 19:08:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-09 19:08:06,268 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-09 19:08:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:08:06,269 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-09 19:08:06,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:08:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-09 19:08:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 19:08:06,269 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:08:06,270 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:08:06,270 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:08:06,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:08:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-12-09 19:08:06,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:08:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:08:06,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:08:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:08:06,271 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:08:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:08:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:08:06,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:08:06,320 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:08:06,321 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-12-09 19:08:06,322 INFO L205 CegarAbsIntRunner]: [0], [4], [11], [13], [19], [22], [24], [30], [31], [32], [34] [2018-12-09 19:08:06,340 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 19:08:06,341 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 19:08:06,444 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 19:08:06,445 INFO L272 AbstractInterpreter]: Visited 10 different actions 19 times. Merged at 2 different actions 4 times. Never widened. Performed 46 root evaluator evaluations with a maximum evaluation depth of 13. Performed 46 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-12-09 19:08:06,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:08:06,451 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 19:08:06,479 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-12-09 19:08:06,479 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 19:08:06,495 INFO L418 sIntCurrentIteration]: We unified 10 AI predicates to 10 [2018-12-09 19:08:06,495 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 19:08:06,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 19:08:06,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-12-09 19:08:06,496 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:08:06,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:08:06,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:08:06,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:08:06,497 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-12-09 19:08:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:08:06,519 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-12-09 19:08:06,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 19:08:06,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-09 19:08:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:08:06,519 INFO L225 Difference]: With dead ends: 12 [2018-12-09 19:08:06,519 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:08:06,520 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:08:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:08:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:08:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:08:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:08:06,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-12-09 19:08:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:08:06,520 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:08:06,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:08:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:08:06,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:08:06,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 19:08:06,538 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 19:08:06,538 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:08:06,538 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:08:06,539 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 19:08:06,539 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:08:06,539 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:08:06,539 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-12-09 19:08:06,539 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-12-09 19:08:06,539 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-12-09 19:08:06,539 INFO L444 ceAbstractionStarter]: At program point L10-2(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-12-09 19:08:06,539 INFO L444 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-12-09 19:08:06,539 INFO L448 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-12-09 19:08:06,539 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-12-09 19:08:06,539 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-12-09 19:08:06,539 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-12-09 19:08:06,539 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-12-09 19:08:06,540 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-12-09 19:08:06,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:08:06 BoogieIcfgContainer [2018-12-09 19:08:06,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:08:06,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:08:06,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:08:06,545 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:08:06,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:06" (3/4) ... [2018-12-09 19:08:06,547 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:08:06,550 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 19:08:06,550 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 19:08:06,551 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 19:08:06,552 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 19:08:06,552 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 19:08:06,553 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:08:06,573 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_14cdd1b5-6e99-416a-98d5-782d3c0c4e2b/bin-2019/utaipan/witness.graphml [2018-12-09 19:08:06,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:08:06,574 INFO L168 Benchmark]: Toolchain (without parser) took 811.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -79.8 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:08:06,575 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:08:06,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.73 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:08:06,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 10.65 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:08:06,575 INFO L168 Benchmark]: Boogie Preprocessor took 10.91 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:08:06,575 INFO L168 Benchmark]: RCFGBuilder took 131.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -154.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-09 19:08:06,576 INFO L168 Benchmark]: TraceAbstraction took 499.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:08:06,576 INFO L168 Benchmark]: Witness Printer took 28.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:08:06,577 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 127.73 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 10.65 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.91 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 131.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -154.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 499.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. * Witness Printer took 28.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 10]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 1 SDslu, 30 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8 AbsIntWeakeningRatio, 0.3 AbsIntAvgWeakeningVarsNumRemoved, 0.1 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 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, 393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...