./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.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_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/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 0449565d36be00deee168302da89fb227fc941e3 ............................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:57:35,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:57:35,847 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:57:35,856 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:57:35,857 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:57:35,857 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:57:35,858 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:57:35,860 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:57:35,861 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:57:35,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:57:35,862 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:57:35,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:57:35,863 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:57:35,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:57:35,865 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:57:35,865 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:57:35,866 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:57:35,868 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:57:35,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:57:35,870 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:57:35,871 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:57:35,872 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:57:35,874 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:57:35,874 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:57:35,875 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:57:35,875 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:57:35,876 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:57:35,877 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:57:35,877 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:57:35,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:57:35,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:57:35,879 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:57:35,879 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:57:35,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:57:35,880 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:57:35,881 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:57:35,881 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 23:57:35,893 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:57:35,893 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:57:35,894 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:57:35,894 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:57:35,895 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 23:57:35,895 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 23:57:35,895 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 23:57:35,895 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 23:57:35,895 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 23:57:35,895 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 23:57:35,895 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 23:57:35,896 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 23:57:35,896 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 23:57:35,896 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:57:35,897 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:57:35,897 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:57:35,897 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:57:35,897 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:57:35,897 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:57:35,897 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:57:35,897 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:57:35,898 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:57:35,898 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:57:35,898 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:57:35,898 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:57:35,898 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:57:35,898 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:57:35,898 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:57:35,899 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:57:35,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:57:35,899 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:57:35,899 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:57:35,899 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:57:35,899 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 23:57:35,900 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:57:35,900 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 23:57:35,900 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 23:57:35,900 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_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/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 -> 0449565d36be00deee168302da89fb227fc941e3 [2018-11-22 23:57:35,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:57:35,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:57:35,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:57:35,938 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:57:35,939 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:57:35,939 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-22 23:57:35,981 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/data/be41982e5/b1b884dfffa3437cbc8afe7c276ea2d7/FLAG57ce662d6 [2018-11-22 23:57:36,317 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:57:36,318 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/sv-benchmarks/c/recursive-simple/id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-22 23:57:36,323 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/data/be41982e5/b1b884dfffa3437cbc8afe7c276ea2d7/FLAG57ce662d6 [2018-11-22 23:57:36,753 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/data/be41982e5/b1b884dfffa3437cbc8afe7c276ea2d7 [2018-11-22 23:57:36,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:57:36,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:57:36,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:57:36,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:57:36,760 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:57:36,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5fba41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36, skipping insertion in model container [2018-11-22 23:57:36,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:57:36,780 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:57:36,908 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:57:36,910 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:57:36,920 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:57:36,929 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:57:36,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36 WrapperNode [2018-11-22 23:57:36,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:57:36,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:57:36,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:57:36,930 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:57:36,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:57:36,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:57:36,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:57:36,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:57:36,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... [2018-11-22 23:57:36,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:57:36,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:57:36,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:57:36,956 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:57:36,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/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 [2018-11-22 23:57:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:57:37,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:57:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:57:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:57:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:57:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:57:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-22 23:57:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-22 23:57:37,142 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:57:37,142 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-22 23:57:37,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:57:37 BoogieIcfgContainer [2018-11-22 23:57:37,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:57:37,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:57:37,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:57:37,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:57:37,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:57:36" (1/3) ... [2018-11-22 23:57:37,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acc391b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:57:37, skipping insertion in model container [2018-11-22 23:57:37,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:57:36" (2/3) ... [2018-11-22 23:57:37,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acc391b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:57:37, skipping insertion in model container [2018-11-22 23:57:37,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:57:37" (3/3) ... [2018-11-22 23:57:37,147 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b5_o10_true-unreach-call_true-termination_true-no-overflow.c [2018-11-22 23:57:37,153 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:57:37,158 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 23:57:37,168 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 23:57:37,189 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:57:37,189 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:57:37,190 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:57:37,190 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:57:37,190 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:57:37,190 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:57:37,190 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:57:37,190 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:57:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-22 23:57:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-22 23:57:37,207 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:57:37,208 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:57:37,209 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:57:37,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:57:37,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2018-11-22 23:57:37,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:57:37,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:37,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:57:37,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:37,253 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:57:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:57:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:57:37,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:57:37,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 23:57:37,348 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:57:37,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 23:57:37,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 23:57:37,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:57:37,366 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2018-11-22 23:57:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:57:37,399 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-22 23:57:37,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 23:57:37,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-22 23:57:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:57:37,406 INFO L225 Difference]: With dead ends: 33 [2018-11-22 23:57:37,407 INFO L226 Difference]: Without dead ends: 19 [2018-11-22 23:57:37,409 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:57:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-22 23:57:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-22 23:57:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-22 23:57:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-22 23:57:37,438 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2018-11-22 23:57:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:57:37,438 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-22 23:57:37,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 23:57:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-22 23:57:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-22 23:57:37,440 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:57:37,440 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:57:37,440 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:57:37,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:57:37,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2018-11-22 23:57:37,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:57:37,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:37,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:57:37,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:37,442 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:57:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:57:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-22 23:57:37,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:57:37,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 23:57:37,498 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:57:37,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 23:57:37,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 23:57:37,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:57:37,500 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-11-22 23:57:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:57:37,528 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-22 23:57:37,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 23:57:37,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-22 23:57:37,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:57:37,529 INFO L225 Difference]: With dead ends: 31 [2018-11-22 23:57:37,529 INFO L226 Difference]: Without dead ends: 23 [2018-11-22 23:57:37,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:57:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-22 23:57:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-22 23:57:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-22 23:57:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-22 23:57:37,534 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2018-11-22 23:57:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:57:37,534 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-22 23:57:37,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 23:57:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-22 23:57:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-22 23:57:37,535 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:57:37,535 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:57:37,535 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:57:37,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:57:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2018-11-22 23:57:37,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:57:37,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:37,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:57:37,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:37,537 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:57:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:57:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-22 23:57:37,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:57:37,619 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 23:57:37,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-22 23:57:37,621 INFO L202 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [17], [20], [21], [23], [27], [28], [29], [30], [31], [33], [34], [35], [36] [2018-11-22 23:57:37,644 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 23:57:37,644 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 23:57:37,791 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-22 23:57:37,792 INFO L272 AbstractInterpreter]: Visited 18 different actions 59 times. Merged at 6 different actions 20 times. Never widened. Performed 157 root evaluator evaluations with a maximum evaluation depth of 5. Performed 157 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 2 fixpoints after 2 different actions. Largest state had 5 variables. [2018-11-22 23:57:37,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:57:37,802 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-22 23:57:37,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:57:37,803 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:57:37,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:57:37,809 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 23:57:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:57:37,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:57:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-22 23:57:37,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:57:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-22 23:57:38,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-22 23:57:38,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2018-11-22 23:57:38,044 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-22 23:57:38,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-22 23:57:38,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-22 23:57:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2018-11-22 23:57:38,045 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2018-11-22 23:57:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:57:38,079 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-22 23:57:38,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 23:57:38,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-11-22 23:57:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:57:38,080 INFO L225 Difference]: With dead ends: 27 [2018-11-22 23:57:38,080 INFO L226 Difference]: Without dead ends: 23 [2018-11-22 23:57:38,081 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-11-22 23:57:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-22 23:57:38,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-22 23:57:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-22 23:57:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-22 23:57:38,085 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-11-22 23:57:38,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:57:38,086 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-22 23:57:38,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-22 23:57:38,086 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-22 23:57:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-22 23:57:38,087 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:57:38,087 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:57:38,087 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:57:38,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:57:38,087 INFO L82 PathProgramCache]: Analyzing trace with hash 376843494, now seen corresponding path program 1 times [2018-11-22 23:57:38,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:57:38,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:38,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:57:38,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:57:38,088 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:57:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:57:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-22 23:57:38,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:57:38,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 23:57:38,130 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:57:38,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 23:57:38,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 23:57:38,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:57:38,130 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2018-11-22 23:57:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:57:38,138 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-22 23:57:38,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 23:57:38,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-22 23:57:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:57:38,138 INFO L225 Difference]: With dead ends: 23 [2018-11-22 23:57:38,139 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:57:38,139 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:57:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:57:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:57:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:57:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:57:38,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-22 23:57:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:57:38,140 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:57:38,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 23:57:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:57:38,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:57:38,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 23:57:38,153 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-22 23:57:38,153 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:57:38,153 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:57:38,153 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 23:57:38,153 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 23:57:38,153 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 23:57:38,153 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-11-22 23:57:38,153 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-22 23:57:38,153 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2018-11-22 23:57:38,153 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L451 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: true [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L451 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: true [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-22 23:57:38,154 INFO L448 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-11-22 23:57:38,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:57:38 BoogieIcfgContainer [2018-11-22 23:57:38,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:57:38,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:57:38,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:57:38,156 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:57:38,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:57:37" (3/4) ... [2018-11-22 23:57:38,159 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:57:38,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 23:57:38,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 23:57:38,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-22 23:57:38,165 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-22 23:57:38,166 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-22 23:57:38,166 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 23:57:38,194 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7e5e6bf0-cc87-4c03-8d53-b0d8819aa371/bin-2019/utaipan/witness.graphml [2018-11-22 23:57:38,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:57:38,195 INFO L168 Benchmark]: Toolchain (without parser) took 1438.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -52.7 MB). Peak memory consumption was 82.6 MB. Max. memory is 11.5 GB. [2018-11-22 23:57:38,196 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:57:38,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.37 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-22 23:57:38,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.41 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:57:38,197 INFO L168 Benchmark]: Boogie Preprocessor took 11.89 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:57:38,197 INFO L168 Benchmark]: RCFGBuilder took 186.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:57:38,198 INFO L168 Benchmark]: TraceAbstraction took 1013.09 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: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. [2018-11-22 23:57:38,198 INFO L168 Benchmark]: Witness Printer took 38.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:57:38,201 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.37 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.41 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.89 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1013.09 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: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 11.5 GB. * Witness Printer took 38.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 6 SDslu, 251 SDs, 0 SdLazy, 51 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3632 SizeOfPredicates, 2 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 25/31 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...