./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test05.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/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 d041348802bf4718d6612df649aecee20760a6ff ................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:15:43,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:15:43,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:15:43,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:15:43,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:15:43,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:15:43,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:15:43,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:15:43,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:15:43,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:15:43,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:15:43,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:15:43,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:15:43,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:15:43,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:15:43,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:15:43,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:15:43,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:15:43,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:15:43,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:15:43,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:15:43,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:15:43,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:15:43,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:15:43,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:15:43,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:15:43,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:15:43,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:15:43,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:15:43,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:15:43,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:15:43,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:15:43,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:15:43,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:15:43,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:15:43,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:15:43,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:15:43,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:15:43,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:15:43,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:15:43,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:15:43,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:15:44,016 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:15:44,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:15:44,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:15:44,026 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:15:44,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:15:44,027 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:15:44,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:15:44,027 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:15:44,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:15:44,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:15:44,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:15:44,028 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:15:44,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:15:44,028 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:15:44,029 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:15:44,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:15:44,030 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:15:44,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:15:44,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:15:44,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:15:44,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:15:44,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:15:44,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:15:44,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:15:44,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:15:44,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:15:44,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:15:44,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:15:44,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:15:44,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:15:44,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:15:44,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:15:44,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:15:44,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:15:44,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:15:44,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:15:44,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:15:44,035 INFO L138 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/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/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 -> d041348802bf4718d6612df649aecee20760a6ff [2019-11-26 02:15:44,198 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:15:44,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:15:44,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:15:44,210 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:15:44,211 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:15:44,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test05.c [2019-11-26 02:15:44,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/data/b55ba94af/b36bc20b91494d0793de010385275f25/FLAGa231d102d [2019-11-26 02:15:44,662 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:15:44,662 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/sv-benchmarks/c/ldv-regression/test05.c [2019-11-26 02:15:44,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/data/b55ba94af/b36bc20b91494d0793de010385275f25/FLAGa231d102d [2019-11-26 02:15:44,682 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/data/b55ba94af/b36bc20b91494d0793de010385275f25 [2019-11-26 02:15:44,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:15:44,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:15:44,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:15:44,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:15:44,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:15:44,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:15:44" (1/1) ... [2019-11-26 02:15:44,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a8a89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:44, skipping insertion in model container [2019-11-26 02:15:44,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:15:44" (1/1) ... [2019-11-26 02:15:44,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:15:44,724 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:15:44,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:15:44,983 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:15:45,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:15:45,020 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:15:45,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45 WrapperNode [2019-11-26 02:15:45,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:15:45,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:15:45,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:15:45,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:15:45,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:15:45,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:15:45,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:15:45,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:15:45,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... [2019-11-26 02:15:45,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:15:45,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:15:45,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:15:45,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:15:45,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/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 [2019-11-26 02:15:45,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:15:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:15:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:15:45,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:15:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:15:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:15:45,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:15:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:15:45,703 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:15:45,703 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-26 02:15:45,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:15:45 BoogieIcfgContainer [2019-11-26 02:15:45,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:15:45,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:15:45,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:15:45,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:15:45,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:15:44" (1/3) ... [2019-11-26 02:15:45,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b275ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:15:45, skipping insertion in model container [2019-11-26 02:15:45,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:15:45" (2/3) ... [2019-11-26 02:15:45,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b275ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:15:45, skipping insertion in model container [2019-11-26 02:15:45,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:15:45" (3/3) ... [2019-11-26 02:15:45,711 INFO L109 eAbstractionObserver]: Analyzing ICFG test05.c [2019-11-26 02:15:45,719 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:15:45,725 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:15:45,733 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:15:45,751 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:15:45,751 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:15:45,751 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:15:45,752 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:15:45,752 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:15:45,752 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:15:45,752 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:15:45,752 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:15:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-26 02:15:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:15:45,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:15:45,767 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:15:45,767 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:15:45,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:15:45,772 INFO L82 PathProgramCache]: Analyzing trace with hash 61961, now seen corresponding path program 1 times [2019-11-26 02:15:45,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:15:45,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908724787] [2019-11-26 02:15:45,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:15:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:15:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:15:46,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908724787] [2019-11-26 02:15:46,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:15:46,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:15:46,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530427551] [2019-11-26 02:15:46,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:15:46,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:15:46,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:15:46,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:15:46,073 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-26 02:15:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:15:46,096 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-11-26 02:15:46,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:15:46,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:15:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:15:46,107 INFO L225 Difference]: With dead ends: 11 [2019-11-26 02:15:46,108 INFO L226 Difference]: Without dead ends: 5 [2019-11-26 02:15:46,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:15:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-11-26 02:15:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-11-26 02:15:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-26 02:15:46,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2019-11-26 02:15:46,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 3 [2019-11-26 02:15:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:15:46,135 INFO L462 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2019-11-26 02:15:46,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:15:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2019-11-26 02:15:46,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:15:46,136 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:15:46,136 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:15:46,136 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:15:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:15:46,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1922612, now seen corresponding path program 1 times [2019-11-26 02:15:46,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:15:46,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868721852] [2019-11-26 02:15:46,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:15:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:15:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:15:46,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868721852] [2019-11-26 02:15:46,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:15:46,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:15:46,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134424583] [2019-11-26 02:15:46,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:15:46,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:15:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:15:46,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:15:46,324 INFO L87 Difference]: Start difference. First operand 5 states and 4 transitions. Second operand 4 states. [2019-11-26 02:15:46,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:15:46,381 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2019-11-26 02:15:46,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:15:46,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-26 02:15:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:15:46,381 INFO L225 Difference]: With dead ends: 5 [2019-11-26 02:15:46,381 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:15:46,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:15:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:15:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:15:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:15:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:15:46,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-26 02:15:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:15:46,383 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:15:46,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:15:46,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:15:46,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:15:46,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:15:46,400 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:15:46,400 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2019-11-26 02:15:46,400 INFO L444 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2019-11-26 02:15:46,400 INFO L447 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-26 02:15:46,400 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2019-11-26 02:15:46,400 INFO L447 ceAbstractionStarter]: At program point L45(lines 20 46) the Hoare annotation is: true [2019-11-26 02:15:46,401 INFO L440 ceAbstractionStarter]: At program point L39(lines 20 46) the Hoare annotation is: false [2019-11-26 02:15:46,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:15:46 BoogieIcfgContainer [2019-11-26 02:15:46,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:15:46,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:15:46,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:15:46,416 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:15:46,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:15:45" (3/4) ... [2019-11-26 02:15:46,420 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:15:46,435 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2019-11-26 02:15:46,436 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:15:46,436 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:15:46,515 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b76d5cd9-55c9-4a9c-8445-94504755ea82/bin/utaipan/witness.graphml [2019-11-26 02:15:46,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:15:46,518 INFO L168 Benchmark]: Toolchain (without parser) took 1831.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -94.1 MB). Peak memory consumption was 50.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:15:46,526 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:15:46,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:15:46,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:15:46,527 INFO L168 Benchmark]: Boogie Preprocessor took 21.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:15:46,527 INFO L168 Benchmark]: RCFGBuilder took 622.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:15:46,528 INFO L168 Benchmark]: TraceAbstraction took 709.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:15:46,528 INFO L168 Benchmark]: Witness Printer took 101.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:15:46,531 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 622.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 709.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 101.22 ms. Allocated memory is still 1.2 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: 44]: 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: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 1 SDslu, 4 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 4 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...