./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test04_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test04_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash acbed71759f45b322ef055991b90acd5402a32bc ............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 11:58:54,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:58:54,048 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:58:54,055 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:58:54,055 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:58:54,056 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:58:54,057 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:58:54,058 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:58:54,059 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:58:54,059 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:58:54,060 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:58:54,060 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:58:54,061 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:58:54,061 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:58:54,062 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:58:54,063 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:58:54,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:58:54,064 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:58:54,065 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:58:54,066 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:58:54,067 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:58:54,068 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:58:54,069 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:58:54,070 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:58:54,070 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:58:54,070 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:58:54,071 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:58:54,072 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:58:54,072 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:58:54,074 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:58:54,074 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:58:54,074 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:58:54,074 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:58:54,074 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:58:54,075 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:58:54,076 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:58:54,076 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 11:58:54,086 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:58:54,086 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:58:54,086 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:58:54,086 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:58:54,087 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 11:58:54,087 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 11:58:54,087 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 11:58:54,087 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 11:58:54,087 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 11:58:54,087 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 11:58:54,087 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 11:58:54,087 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 11:58:54,088 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 11:58:54,088 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:58:54,088 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:58:54,088 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:58:54,089 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:58:54,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:58:54,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:58:54,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:58:54,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:58:54,090 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:58:54,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:58:54,090 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:58:54,091 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:58:54,091 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:58:54,091 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 11:58:54,091 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:58:54,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 11:58:54,091 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 11:58:54,091 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acbed71759f45b322ef055991b90acd5402a32bc [2018-11-23 11:58:54,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:58:54,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:58:54,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:58:54,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:58:54,124 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:58:54,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test04_true-unreach-call_true-termination.c [2018-11-23 11:58:54,159 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/data/f60bb2b6c/529ef753abec4e0a949de34fafbf8648/FLAG7add62445 [2018-11-23 11:58:54,572 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:58:54,573 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/sv-benchmarks/c/ldv-regression/test04_true-unreach-call_true-termination.c [2018-11-23 11:58:54,578 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/data/f60bb2b6c/529ef753abec4e0a949de34fafbf8648/FLAG7add62445 [2018-11-23 11:58:54,589 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/data/f60bb2b6c/529ef753abec4e0a949de34fafbf8648 [2018-11-23 11:58:54,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:58:54,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:58:54,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:58:54,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:58:54,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:58:54,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45abf0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54, skipping insertion in model container [2018-11-23 11:58:54,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:58:54,621 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:58:54,743 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:58:54,749 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:58:54,757 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:58:54,768 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:58:54,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54 WrapperNode [2018-11-23 11:58:54,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:58:54,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:58:54,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:58:54,769 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:58:54,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:58:54,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:58:54,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:58:54,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:58:54,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... [2018-11-23 11:58:54,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:58:54,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:58:54,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:58:54,797 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:58:54,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:58:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 11:58:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:58:54,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:58:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 11:58:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-23 11:58:54,867 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-23 11:58:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:58:54,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:58:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 11:58:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:58:54,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:58:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 11:58:54,975 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:58:54,975 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 11:58:54,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:58:54 BoogieIcfgContainer [2018-11-23 11:58:54,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:58:54,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:58:54,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:58:54,978 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:58:54,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:58:54" (1/3) ... [2018-11-23 11:58:54,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de448b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:58:54, skipping insertion in model container [2018-11-23 11:58:54,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:58:54" (2/3) ... [2018-11-23 11:58:54,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de448b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:58:54, skipping insertion in model container [2018-11-23 11:58:54,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:58:54" (3/3) ... [2018-11-23 11:58:54,980 INFO L112 eAbstractionObserver]: Analyzing ICFG test04_true-unreach-call_true-termination.c [2018-11-23 11:58:54,988 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:58:54,994 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 11:58:55,003 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 11:58:55,020 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:58:55,021 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:58:55,021 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:58:55,021 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:58:55,021 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:58:55,021 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:58:55,021 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:58:55,021 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:58:55,032 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-23 11:58:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 11:58:55,035 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:58:55,036 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:58:55,038 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:58:55,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:58:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1498735640, now seen corresponding path program 1 times [2018-11-23 11:58:55,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 11:58:55,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:58:55,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:58:55,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 11:58:55,075 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 11:58:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:58:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:58:55,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:58:55,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 11:58:55,249 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 11:58:55,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 11:58:55,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 11:58:55,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-23 11:58:55,260 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2018-11-23 11:58:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:58:55,341 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-11-23 11:58:55,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 11:58:55,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-23 11:58:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:58:55,347 INFO L225 Difference]: With dead ends: 22 [2018-11-23 11:58:55,347 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 11:58:55,349 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-23 11:58:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 11:58:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 11:58:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 11:58:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 11:58:55,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-23 11:58:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:58:55,366 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 11:58:55,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 11:58:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 11:58:55,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:58:55,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 11:58:55,400 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 11:58:55,400 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 11:58:55,400 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:58:55,400 INFO L448 ceAbstractionStarter]: For program point fEXIT(lines 4 6) no Hoare annotation was computed. [2018-11-23 11:58:55,400 INFO L451 ceAbstractionStarter]: At program point fENTRY(lines 4 6) the Hoare annotation is: true [2018-11-23 11:58:55,400 INFO L448 ceAbstractionStarter]: For program point fFINAL(lines 4 6) no Hoare annotation was computed. [2018-11-23 11:58:55,401 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 11:58:55,401 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 11:58:55,401 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 11:58:55,401 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 11:58:55,401 INFO L444 ceAbstractionStarter]: At program point L17(lines 8 24) the Hoare annotation is: false [2018-11-23 11:58:55,401 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2018-11-23 11:58:55,401 INFO L444 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (= |main_~#a~0.offset| main_~p1~0.offset) (= |main_~#a~0.base| main_~p1~0.base) (= main_~p1~0.offset main_~p2~0.offset) (not (= main_~p1~0.base main_~p2~0.base))) [2018-11-23 11:58:55,401 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 24) the Hoare annotation is: true [2018-11-23 11:58:55,401 INFO L448 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-23 11:58:55,402 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 24) no Hoare annotation was computed. [2018-11-23 11:58:55,402 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2018-11-23 11:58:55,402 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 24) no Hoare annotation was computed. [2018-11-23 11:58:55,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:58:55 BoogieIcfgContainer [2018-11-23 11:58:55,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 11:58:55,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 11:58:55,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 11:58:55,407 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 11:58:55,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:58:54" (3/4) ... [2018-11-23 11:58:55,410 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 11:58:55,414 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 11:58:55,414 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-23 11:58:55,414 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 11:58:55,418 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-23 11:58:55,418 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-23 11:58:55,418 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 11:58:55,418 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 11:58:55,446 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_487ac8f2-bc29-4ce1-9e55-69ab70c99872/bin-2019/utaipan/witness.graphml [2018-11-23 11:58:55,446 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 11:58:55,447 INFO L168 Benchmark]: Toolchain (without parser) took 855.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -140.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-23 11:58:55,448 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:58:55,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.77 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:58:55,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.97 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 11:58:55,449 INFO L168 Benchmark]: Boogie Preprocessor took 11.81 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 11:58:55,450 INFO L168 Benchmark]: RCFGBuilder took 178.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -203.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2018-11-23 11:58:55,451 INFO L168 Benchmark]: TraceAbstraction took 430.80 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: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 11.5 GB. [2018-11-23 11:58:55,452 INFO L168 Benchmark]: Witness Printer took 39.44 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 11:58:55,454 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.77 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.97 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.81 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 178.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -203.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 430.80 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: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 11.5 GB. * Witness Printer took 39.44 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: 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: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 20 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...