./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0c74f0cc26425c1a044a70e86941b5dd82b132ff ..................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:27:16,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:27:16,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:27:16,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:27:16,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:27:16,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:27:16,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:27:16,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:27:16,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:27:16,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:27:16,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:27:16,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:27:16,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:27:16,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:27:16,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:27:16,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:27:16,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:27:16,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:27:16,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:27:16,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:27:16,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:27:16,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:27:16,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:27:16,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:27:16,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:27:16,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:27:16,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:27:16,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:27:16,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:27:16,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:27:16,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:27:16,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:27:16,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:27:16,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:27:16,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:27:16,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:27:16,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:27:16,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:27:16,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:27:16,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:27:16,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:27:16,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-10-22 11:27:16,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:27:16,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:27:16,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:27:16,887 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:27:16,887 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:27:16,887 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:27:16,887 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:27:16,887 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:27:16,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:27:16,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:27:16,888 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:27:16,888 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:27:16,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:27:16,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:27:16,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:27:16,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:27:16,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:27:16,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:27:16,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:27:16,890 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:27:16,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:27:16,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:27:16,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:27:16,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:27:16,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:27:16,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:27:16,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:27:16,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:27:16,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:27:16,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:27:16,891 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:27:16,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:27:16,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:27:16,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:27:16,892 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/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c74f0cc26425c1a044a70e86941b5dd82b132ff [2019-10-22 11:27:16,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:27:16,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:27:16,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:27:16,945 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:27:16,945 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:27:16,946 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2019-10-22 11:27:16,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/data/3557325bd/904baacf70a24f5998b4004a0ed814a6/FLAG62717f7c4 [2019-10-22 11:27:17,343 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:27:17,343 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/sv-benchmarks/c/termination-crafted-lit/cstrspn.c [2019-10-22 11:27:17,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/data/3557325bd/904baacf70a24f5998b4004a0ed814a6/FLAG62717f7c4 [2019-10-22 11:27:17,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/data/3557325bd/904baacf70a24f5998b4004a0ed814a6 [2019-10-22 11:27:17,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:27:17,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:27:17,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:17,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:27:17,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:27:17,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:17" (1/1) ... [2019-10-22 11:27:17,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a43941d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:17, skipping insertion in model container [2019-10-22 11:27:17,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:17" (1/1) ... [2019-10-22 11:27:17,804 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:27:17,822 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:27:17,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:18,041 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:27:18,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:18,067 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:27:18,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18 WrapperNode [2019-10-22 11:27:18,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:18,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:18,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:27:18,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:27:18,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:18,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:27:18,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:27:18,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:27:18,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... [2019-10-22 11:27:18,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:27:18,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:27:18,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:27:18,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:27:18,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/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 [2019-10-22 11:27:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:27:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:27:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:27:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:27:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:27:18,540 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:27:18,541 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 11:27:18,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:18 BoogieIcfgContainer [2019-10-22 11:27:18,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:27:18,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:27:18,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:27:18,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:27:18,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:27:17" (1/3) ... [2019-10-22 11:27:18,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5cf9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:18, skipping insertion in model container [2019-10-22 11:27:18,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:18" (2/3) ... [2019-10-22 11:27:18,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5cf9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:18, skipping insertion in model container [2019-10-22 11:27:18,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:18" (3/3) ... [2019-10-22 11:27:18,553 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrspn.c [2019-10-22 11:27:18,561 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:27:18,566 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-10-22 11:27:18,575 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-10-22 11:27:18,593 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:27:18,593 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:27:18,593 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:27:18,593 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:27:18,594 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:27:18,594 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:27:18,594 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:27:18,594 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:27:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-22 11:27:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:27:18,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:18,615 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:27:18,617 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:27:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:18,623 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2019-10-22 11:27:18,629 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:18,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541979017] [2019-10-22 11:27:18,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:18,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:18,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:18,732 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541979017] [2019-10-22 11:27:18,732 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:18,733 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:27:18,733 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656293775] [2019-10-22 11:27:18,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:18,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:18,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:18,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:18,753 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2019-10-22 11:27:18,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:18,902 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2019-10-22 11:27:18,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:18,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 11:27:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:18,916 INFO L225 Difference]: With dead ends: 75 [2019-10-22 11:27:18,916 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 11:27:18,919 INFO L600 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 [2019-10-22 11:27:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 11:27:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-10-22 11:27:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 11:27:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-10-22 11:27:18,944 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 4 [2019-10-22 11:27:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:18,945 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-10-22 11:27:18,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-10-22 11:27:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 11:27:18,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:18,945 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 11:27:18,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:27:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-10-22 11:27:18,947 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:18,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980306370] [2019-10-22 11:27:18,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:18,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:18,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:18,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980306370] [2019-10-22 11:27:18,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:18,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:27:18,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073705031] [2019-10-22 11:27:18,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:18,964 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:18,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:18,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:18,964 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 3 states. [2019-10-22 11:27:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:18,995 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-22 11:27:18,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:18,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 11:27:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:18,996 INFO L225 Difference]: With dead ends: 27 [2019-10-22 11:27:18,996 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 11:27:18,997 INFO L600 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 [2019-10-22 11:27:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 11:27:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2019-10-22 11:27:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:27:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-22 11:27:19,000 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2019-10-22 11:27:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:19,000 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-22 11:27:19,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-22 11:27:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:27:19,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:19,001 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:27:19,001 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:27:19,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:19,001 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2019-10-22 11:27:19,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:27:19,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137083808] [2019-10-22 11:27:19,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:19,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:27:19,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:27:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:19,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137083808] [2019-10-22 11:27:19,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:19,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:27:19,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904233057] [2019-10-22 11:27:19,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:19,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:27:19,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:19,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:19,019 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2019-10-22 11:27:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:19,067 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-10-22 11:27:19,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:19,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 11:27:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:19,068 INFO L225 Difference]: With dead ends: 17 [2019-10-22 11:27:19,069 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:27:19,069 INFO L600 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 [2019-10-22 11:27:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:27:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:27:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:27:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:27:19,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-10-22 11:27:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:19,070 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:27:19,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:27:19,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:27:19,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:27:19,099 INFO L443 ceAbstractionStarter]: For program point L31-1(lines 31 38) no Hoare annotation was computed. [2019-10-22 11:27:19,099 INFO L443 ceAbstractionStarter]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2019-10-22 11:27:19,099 INFO L446 ceAbstractionStarter]: At program point L31-4(lines 31 38) the Hoare annotation is: true [2019-10-22 11:27:19,099 INFO L443 ceAbstractionStarter]: For program point L31-5(lines 31 38) no Hoare annotation was computed. [2019-10-22 11:27:19,100 INFO L439 ceAbstractionStarter]: At program point L19(lines 12 20) the Hoare annotation is: (and (<= ULTIMATE.start_build_nondet_String_~length~0 2147483647) (<= 1 ULTIMATE.start_build_nondet_String_~length~0)) [2019-10-22 11:27:19,100 INFO L446 ceAbstractionStarter]: At program point L19-1(lines 12 20) the Hoare annotation is: true [2019-10-22 11:27:19,100 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 11:27:19,100 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 11:27:19,100 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 37) no Hoare annotation was computed. [2019-10-22 11:27:19,100 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:27:19,100 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:27:19,100 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:27:19,101 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,101 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,101 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:27:19,101 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 11:27:19,101 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,104 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-10-22 11:27:19,104 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,104 INFO L443 ceAbstractionStarter]: For program point L34-1(line 34) no Hoare annotation was computed. [2019-10-22 11:27:19,104 INFO L443 ceAbstractionStarter]: For program point L34-3(lines 34 35) no Hoare annotation was computed. [2019-10-22 11:27:19,104 INFO L446 ceAbstractionStarter]: At program point L34-5(lines 34 35) the Hoare annotation is: true [2019-10-22 11:27:19,104 INFO L443 ceAbstractionStarter]: For program point L34-6(lines 34 35) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point L18-2(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L443 ceAbstractionStarter]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2019-10-22 11:27:19,105 INFO L446 ceAbstractionStarter]: At program point L43(lines 42 44) the Hoare annotation is: true [2019-10-22 11:27:19,106 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 11:27:19,106 INFO L443 ceAbstractionStarter]: For program point L14-5(lines 14 16) no Hoare annotation was computed. [2019-10-22 11:27:19,106 INFO L446 ceAbstractionStarter]: At program point L39(lines 26 40) the Hoare annotation is: true [2019-10-22 11:27:19,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:27:19 BoogieIcfgContainer [2019-10-22 11:27:19,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:27:19,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:27:19,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:27:19,117 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:27:19,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:18" (3/4) ... [2019-10-22 11:27:19,121 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:27:19,129 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:27:19,129 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:27:19,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 11:27:19,179 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0608c48a-685d-4b16-9545-fa49e856dbc3/bin/utaipan/witness.graphml [2019-10-22 11:27:19,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:27:19,181 INFO L168 Benchmark]: Toolchain (without parser) took 1393.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -113.1 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:19,181 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:27:19,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:19,182 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.14 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. [2019-10-22 11:27:19,182 INFO L168 Benchmark]: Boogie Preprocessor took 47.99 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. [2019-10-22 11:27:19,182 INFO L168 Benchmark]: RCFGBuilder took 385.15 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:19,183 INFO L168 Benchmark]: TraceAbstraction took 573.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:19,183 INFO L168 Benchmark]: Witness Printer took 62.26 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:19,185 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.14 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 47.99 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 385.15 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 573.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 62.26 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: length <= 2147483647 && 1 <= length - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 8 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 47 SDslu, 20 SDs, 0 SdLazy, 52 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 12 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...