./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-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_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/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 9448a6696b4991e038dda55623feb6ffc9366da0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:03:02,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 09:03:02,940 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 09:03:02,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 09:03:02,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 09:03:02,949 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 09:03:02,950 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 09:03:02,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 09:03:02,952 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 09:03:02,953 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 09:03:02,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 09:03:02,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 09:03:02,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 09:03:02,955 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 09:03:02,956 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 09:03:02,957 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 09:03:02,957 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 09:03:02,959 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 09:03:02,961 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 09:03:02,962 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 09:03:02,962 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 09:03:02,963 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 09:03:02,965 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 09:03:02,965 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 09:03:02,965 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 09:03:02,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 09:03:02,967 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 09:03:02,967 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 09:03:02,968 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 09:03:02,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 09:03:02,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 09:03:02,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 09:03:02,970 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 09:03:02,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 09:03:02,971 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 09:03:02,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 09:03:02,971 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 09:03:02,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 09:03:02,982 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 09:03:02,983 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 09:03:02,983 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 09:03:02,983 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 09:03:02,983 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 09:03:02,984 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 09:03:02,984 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 09:03:02,984 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 09:03:02,984 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 09:03:02,984 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 09:03:02,984 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 09:03:02,984 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 09:03:02,985 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 09:03:02,985 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 09:03:02,985 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 09:03:02,985 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 09:03:02,986 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 09:03:02,986 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 09:03:02,986 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 09:03:02,986 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 09:03:02,986 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 09:03:02,986 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 09:03:02,986 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 09:03:02,987 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 09:03:02,987 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 09:03:02,987 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 09:03:02,987 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 09:03:02,987 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 09:03:02,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 09:03:02,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 09:03:02,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 09:03:02,988 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 09:03:02,988 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 09:03:02,988 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 09:03:02,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 09:03:02,988 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 09:03:02,988 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_0dca334c-708a-4990-a1a6-f039444ef94c/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 -> 9448a6696b4991e038dda55623feb6ffc9366da0 [2018-11-23 09:03:03,014 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 09:03:03,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 09:03:03,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 09:03:03,027 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 09:03:03,028 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 09:03:03,028 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c [2018-11-23 09:03:03,065 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/data/6c9b1eea8/daa6e846c0ed436dba00fe6f6d1ec0d8/FLAG4a88c0355 [2018-11-23 09:03:03,408 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 09:03:03,409 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c [2018-11-23 09:03:03,413 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/data/6c9b1eea8/daa6e846c0ed436dba00fe6f6d1ec0d8/FLAG4a88c0355 [2018-11-23 09:03:03,837 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/data/6c9b1eea8/daa6e846c0ed436dba00fe6f6d1ec0d8 [2018-11-23 09:03:03,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 09:03:03,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 09:03:03,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 09:03:03,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 09:03:03,843 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 09:03:03,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:03,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6566c35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03, skipping insertion in model container [2018-11-23 09:03:03,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:03,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 09:03:03,867 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 09:03:03,978 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:03:03,980 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 09:03:03,989 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 09:03:03,997 INFO L195 MainTranslator]: Completed translation [2018-11-23 09:03:03,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03 WrapperNode [2018-11-23 09:03:03,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 09:03:03,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 09:03:03,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 09:03:03,998 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 09:03:04,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 09:03:04,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 09:03:04,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 09:03:04,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 09:03:04,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... [2018-11-23 09:03:04,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 09:03:04,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 09:03:04,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 09:03:04,026 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 09:03:04,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/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 09:03:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 09:03:04,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 09:03:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-11-23 09:03:04,108 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-11-23 09:03:04,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 09:03:04,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 09:03:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 09:03:04,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 09:03:04,109 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-23 09:03:04,109 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-23 09:03:04,198 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 09:03:04,198 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 09:03:04,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:03:04 BoogieIcfgContainer [2018-11-23 09:03:04,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 09:03:04,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 09:03:04,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 09:03:04,202 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 09:03:04,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:03:03" (1/3) ... [2018-11-23 09:03:04,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c7fca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:03:04, skipping insertion in model container [2018-11-23 09:03:04,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:03:03" (2/3) ... [2018-11-23 09:03:04,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c7fca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:03:04, skipping insertion in model container [2018-11-23 09:03:04,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:03:04" (3/3) ... [2018-11-23 09:03:04,204 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5_true-unreach-call_true-termination.c [2018-11-23 09:03:04,212 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 09:03:04,217 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 09:03:04,226 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 09:03:04,243 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 09:03:04,243 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 09:03:04,243 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 09:03:04,243 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 09:03:04,243 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 09:03:04,243 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 09:03:04,243 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 09:03:04,244 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 09:03:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-23 09:03:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 09:03:04,257 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:04,257 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:04,258 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:04,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:04,262 INFO L82 PathProgramCache]: Analyzing trace with hash -550894517, now seen corresponding path program 1 times [2018-11-23 09:03:04,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:04,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:04,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:03:04,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:04,295 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:04,390 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 09:03:04,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:03:04,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 09:03:04,392 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:03:04,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 09:03:04,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 09:03:04,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 09:03:04,405 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-11-23 09:03:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:04,472 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-23 09:03:04,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 09:03:04,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 09:03:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:04,479 INFO L225 Difference]: With dead ends: 36 [2018-11-23 09:03:04,480 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 09:03:04,482 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 09:03:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 09:03:04,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-23 09:03:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 09:03:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-11-23 09:03:04,509 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2018-11-23 09:03:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:04,510 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-11-23 09:03:04,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 09:03:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-11-23 09:03:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 09:03:04,511 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:04,511 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:04,512 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:04,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:04,512 INFO L82 PathProgramCache]: Analyzing trace with hash 40504409, now seen corresponding path program 1 times [2018-11-23 09:03:04,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:04,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:04,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:03:04,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:04,513 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:04,575 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 09:03:04,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:03:04,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-23 09:03:04,575 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:03:04,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 09:03:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 09:03:04,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 09:03:04,577 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2018-11-23 09:03:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:04,644 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-11-23 09:03:04,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 09:03:04,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-23 09:03:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:04,646 INFO L225 Difference]: With dead ends: 33 [2018-11-23 09:03:04,646 INFO L226 Difference]: Without dead ends: 29 [2018-11-23 09:03:04,647 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 09:03:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-23 09:03:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-23 09:03:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-23 09:03:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-23 09:03:04,652 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2018-11-23 09:03:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:04,652 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-23 09:03:04,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 09:03:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-23 09:03:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 09:03:04,653 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:04,653 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:04,654 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:04,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1029702107, now seen corresponding path program 1 times [2018-11-23 09:03:04,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:04,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:04,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:03:04,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:04,655 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 09:03:04,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:04,738 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:03:04,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-11-23 09:03:04,741 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [7], [8], [12], [14], [17], [19], [25], [28], [29], [31], [32], [33], [34], [35], [36], [37], [39], [40], [41], [42] [2018-11-23 09:03:04,772 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:03:04,772 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:03:04,897 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:03:04,897 INFO L272 AbstractInterpreter]: Visited 23 different actions 67 times. Never merged. Widened at 2 different actions 4 times. Performed 142 root evaluator evaluations with a maximum evaluation depth of 3. Performed 142 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-23 09:03:04,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:04,912 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:03:04,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:04,912 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:03:04,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:03:04,919 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:03:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:04,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:03:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 09:03:04,961 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:03:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 09:03:05,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:03:05,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 12 [2018-11-23 09:03:05,255 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:03:05,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 09:03:05,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 09:03:05,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:03:05,256 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-11-23 09:03:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:05,317 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-11-23 09:03:05,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 09:03:05,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-23 09:03:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:05,319 INFO L225 Difference]: With dead ends: 39 [2018-11-23 09:03:05,319 INFO L226 Difference]: Without dead ends: 35 [2018-11-23 09:03:05,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:03:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-23 09:03:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2018-11-23 09:03:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 09:03:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-11-23 09:03:05,326 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2018-11-23 09:03:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:05,326 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-11-23 09:03:05,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 09:03:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-11-23 09:03:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 09:03:05,327 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:05,327 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:05,327 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:05,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:05,328 INFO L82 PathProgramCache]: Analyzing trace with hash -559715991, now seen corresponding path program 1 times [2018-11-23 09:03:05,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:05,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:05,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:03:05,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:05,329 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 09:03:05,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:05,402 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:03:05,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 32 with the following transitions: [2018-11-23 09:03:05,403 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [5], [7], [8], [12], [14], [17], [19], [25], [29], [31], [32], [33], [34], [35], [36], [37], [39], [40], [41], [42] [2018-11-23 09:03:05,404 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 09:03:05,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 09:03:05,473 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 09:03:05,473 INFO L272 AbstractInterpreter]: Visited 23 different actions 82 times. Merged at 8 different actions 19 times. Widened at 2 different actions 4 times. Performed 230 root evaluator evaluations with a maximum evaluation depth of 3. Performed 230 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-23 09:03:05,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:05,484 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 09:03:05,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:05,484 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:03:05,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:03:05,501 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 09:03:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:05,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:03:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 09:03:05,527 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:03:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 09:03:05,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:03:05,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 14 [2018-11-23 09:03:05,859 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:03:05,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 09:03:05,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 09:03:05,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-11-23 09:03:05,860 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 9 states. [2018-11-23 09:03:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:05,916 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-11-23 09:03:05,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 09:03:05,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-11-23 09:03:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:05,917 INFO L225 Difference]: With dead ends: 45 [2018-11-23 09:03:05,917 INFO L226 Difference]: Without dead ends: 41 [2018-11-23 09:03:05,917 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-11-23 09:03:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-23 09:03:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2018-11-23 09:03:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 09:03:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-11-23 09:03:05,923 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2018-11-23 09:03:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:05,923 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-11-23 09:03:05,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 09:03:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-11-23 09:03:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 09:03:05,924 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:05,924 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:05,924 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:05,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2003326827, now seen corresponding path program 2 times [2018-11-23 09:03:05,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:05,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:05,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 09:03:05,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:05,925 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 09:03:05,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:05,982 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:03:05,982 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 09:03:05,982 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 09:03:05,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:05,982 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:03:05,992 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 09:03:05,992 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 09:03:06,002 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 09:03:06,003 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:03:06,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:03:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 09:03:06,015 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:03:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 09:03:06,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:03:06,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 15 [2018-11-23 09:03:06,434 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:03:06,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 09:03:06,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 09:03:06,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:03:06,435 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 10 states. [2018-11-23 09:03:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:06,512 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-23 09:03:06,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 09:03:06,513 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-11-23 09:03:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:06,514 INFO L225 Difference]: With dead ends: 51 [2018-11-23 09:03:06,514 INFO L226 Difference]: Without dead ends: 47 [2018-11-23 09:03:06,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2018-11-23 09:03:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-23 09:03:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2018-11-23 09:03:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-23 09:03:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-11-23 09:03:06,519 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2018-11-23 09:03:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:06,519 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-11-23 09:03:06,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 09:03:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-11-23 09:03:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-23 09:03:06,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:06,520 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:06,521 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:06,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:06,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1197899385, now seen corresponding path program 2 times [2018-11-23 09:03:06,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:06,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:06,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:03:06,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:06,522 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-23 09:03:06,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:06,649 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:03:06,649 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 09:03:06,649 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 09:03:06,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:06,649 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:03:06,655 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 09:03:06,655 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 09:03:06,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 09:03:06,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:03:06,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:03:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-23 09:03:06,713 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:03:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-23 09:03:06,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 09:03:06,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2018-11-23 09:03:06,923 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 09:03:06,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 09:03:06,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 09:03:06,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:03:06,924 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 15 states. [2018-11-23 09:03:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:07,004 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-11-23 09:03:07,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 09:03:07,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2018-11-23 09:03:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:07,006 INFO L225 Difference]: With dead ends: 57 [2018-11-23 09:03:07,007 INFO L226 Difference]: Without dead ends: 53 [2018-11-23 09:03:07,007 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-23 09:03:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-23 09:03:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2018-11-23 09:03:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 09:03:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-11-23 09:03:07,016 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2018-11-23 09:03:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:07,017 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-11-23 09:03:07,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 09:03:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-11-23 09:03:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-23 09:03:07,017 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:07,018 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:07,018 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:07,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:07,018 INFO L82 PathProgramCache]: Analyzing trace with hash 706413819, now seen corresponding path program 3 times [2018-11-23 09:03:07,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:07,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:07,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:03:07,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:07,020 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-23 09:03:07,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 09:03:07,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-23 09:03:07,111 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:03:07,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 09:03:07,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 09:03:07,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-23 09:03:07,112 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2018-11-23 09:03:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:07,182 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-11-23 09:03:07,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 09:03:07,183 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2018-11-23 09:03:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:07,184 INFO L225 Difference]: With dead ends: 63 [2018-11-23 09:03:07,184 INFO L226 Difference]: Without dead ends: 39 [2018-11-23 09:03:07,185 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-23 09:03:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-23 09:03:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-23 09:03:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 09:03:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-23 09:03:07,189 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 49 [2018-11-23 09:03:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:07,190 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-23 09:03:07,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 09:03:07,190 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-23 09:03:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-23 09:03:07,191 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 09:03:07,191 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 09:03:07,193 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 09:03:07,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 09:03:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1492956279, now seen corresponding path program 3 times [2018-11-23 09:03:07,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 09:03:07,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:07,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 09:03:07,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 09:03:07,194 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 09:03:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 09:03:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-23 09:03:07,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:07,391 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 09:03:07,391 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 09:03:07,391 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 09:03:07,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 09:03:07,391 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 09:03:07,398 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 09:03:07,399 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 09:03:07,407 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 09:03:07,408 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 09:03:07,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 09:03:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-23 09:03:07,532 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 09:03:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-23 09:03:08,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 09:03:08,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 19] total 33 [2018-11-23 09:03:08,746 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 09:03:08,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 09:03:08,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 09:03:08,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2018-11-23 09:03:08,747 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 13 states. [2018-11-23 09:03:08,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 09:03:08,850 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-11-23 09:03:08,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 09:03:08,850 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2018-11-23 09:03:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 09:03:08,851 INFO L225 Difference]: With dead ends: 39 [2018-11-23 09:03:08,851 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 09:03:08,852 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 78 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1402, Unknown=0, NotChecked=0, Total=1640 [2018-11-23 09:03:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 09:03:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 09:03:08,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 09:03:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 09:03:08,852 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2018-11-23 09:03:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 09:03:08,853 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 09:03:08,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 09:03:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 09:03:08,853 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 09:03:08,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 09:03:08,871 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 09:03:08,871 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 09:03:08,871 INFO L444 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= |id2_#in~x| id2_~x) (<= id2_~x |id2_#in~x|)) [2018-11-23 09:03:08,871 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-23 09:03:08,871 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-23 09:03:08,871 INFO L448 ceAbstractionStarter]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2018-11-23 09:03:08,871 INFO L451 ceAbstractionStarter]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2018-11-23 09:03:08,871 INFO L448 ceAbstractionStarter]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 09:03:08,872 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L444 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L444 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: (and (<= |id_#in~x| id_~x) (<= id_~x |id_#in~x|)) [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-23 09:03:08,872 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2018-11-23 09:03:08,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:03:08 BoogieIcfgContainer [2018-11-23 09:03:08,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 09:03:08,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 09:03:08,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 09:03:08,874 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 09:03:08,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:03:04" (3/4) ... [2018-11-23 09:03:08,877 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 09:03:08,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 09:03:08,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-11-23 09:03:08,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 09:03:08,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-23 09:03:08,883 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 09:03:08,883 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 09:03:08,883 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 09:03:08,909 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0dca334c-708a-4990-a1a6-f039444ef94c/bin-2019/utaipan/witness.graphml [2018-11-23 09:03:08,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 09:03:08,910 INFO L168 Benchmark]: Toolchain (without parser) took 5069.89 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 289.9 MB). Free memory was 959.1 MB in the beginning and 903.6 MB in the end (delta: 55.5 MB). Peak memory consumption was 345.5 MB. Max. memory is 11.5 GB. [2018-11-23 09:03:08,911 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:03:08,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.86 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:03:08,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.65 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 09:03:08,911 INFO L168 Benchmark]: Boogie Preprocessor took 13.07 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:03:08,912 INFO L168 Benchmark]: RCFGBuilder took 173.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-11-23 09:03:08,912 INFO L168 Benchmark]: TraceAbstraction took 4674.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 153.1 MB). Free memory was 1.1 GB in the beginning and 903.6 MB in the end (delta: 217.4 MB). Peak memory consumption was 370.5 MB. Max. memory is 11.5 GB. [2018-11-23 09:03:08,912 INFO L168 Benchmark]: Witness Printer took 35.51 ms. Allocated memory is still 1.3 GB. Free memory is still 903.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 09:03:08,914 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.86 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 13.65 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.07 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 173.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4674.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 153.1 MB). Free memory was 1.1 GB in the beginning and 903.6 MB in the end (delta: 217.4 MB). Peak memory consumption was 370.5 MB. Max. memory is 11.5 GB. * Witness Printer took 35.51 ms. Allocated memory is still 1.3 GB. Free memory is still 903.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. SAFE Result, 4.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 179 SDtfs, 89 SDslu, 1041 SDs, 0 SdLazy, 477 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 328 SyntacticMatches, 45 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 27 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 463 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 636 ConstructedInterpolants, 0 QuantifiedInterpolants, 79740 SizeOfPredicates, 25 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 283/444 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...