./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/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 b865bb4da04412be07ba7e2426d2224bb04a2953 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/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 b865bb4da04412be07ba7e2426d2224bb04a2953 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 15:16:20,879 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 15:16:20,880 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 15:16:20,888 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 15:16:20,888 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 15:16:20,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 15:16:20,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 15:16:20,891 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 15:16:20,892 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 15:16:20,893 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 15:16:20,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 15:16:20,894 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 15:16:20,894 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 15:16:20,895 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 15:16:20,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 15:16:20,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 15:16:20,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 15:16:20,898 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 15:16:20,899 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 15:16:20,900 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 15:16:20,901 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 15:16:20,902 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 15:16:20,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 15:16:20,904 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 15:16:20,904 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 15:16:20,905 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 15:16:20,905 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 15:16:20,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 15:16:20,906 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 15:16:20,907 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 15:16:20,907 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 15:16:20,908 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 15:16:20,908 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 15:16:20,908 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 15:16:20,909 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 15:16:20,909 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 15:16:20,910 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 15:16:20,918 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 15:16:20,918 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 15:16:20,919 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 15:16:20,919 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 15:16:20,919 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 15:16:20,920 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 15:16:20,920 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 15:16:20,920 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 15:16:20,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 15:16:20,920 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 15:16:20,920 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 15:16:20,921 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 15:16:20,921 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 15:16:20,921 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 15:16:20,921 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 15:16:20,921 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 15:16:20,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 15:16:20,922 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 15:16:20,922 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 15:16:20,922 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 15:16:20,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 15:16:20,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 15:16:20,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 15:16:20,923 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 15:16:20,923 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 15:16:20,923 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 15:16:20,923 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 15:16:20,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 15:16:20,923 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 15:16:20,923 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_4a22a95a-18cd-43d5-94c3-e76860bd2a25/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-12-08 15:16:20,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 15:16:20,954 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 15:16:20,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 15:16:20,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 15:16:20,957 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 15:16:20,958 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-08 15:16:20,992 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/0a4820e36/81ab489c386c40f3b0ef5d35720f9a47/FLAGf471887c0 [2018-12-08 15:16:21,414 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 15:16:21,414 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-08 15:16:21,418 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/0a4820e36/81ab489c386c40f3b0ef5d35720f9a47/FLAGf471887c0 [2018-12-08 15:16:21,426 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/0a4820e36/81ab489c386c40f3b0ef5d35720f9a47 [2018-12-08 15:16:21,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 15:16:21,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 15:16:21,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 15:16:21,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 15:16:21,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 15:16:21,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bd7f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21, skipping insertion in model container [2018-12-08 15:16:21,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 15:16:21,448 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 15:16:21,539 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:16:21,541 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 15:16:21,556 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:16:21,568 INFO L195 MainTranslator]: Completed translation [2018-12-08 15:16:21,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21 WrapperNode [2018-12-08 15:16:21,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 15:16:21,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 15:16:21,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 15:16:21,569 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 15:16:21,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 15:16:21,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 15:16:21,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 15:16:21,584 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 15:16:21,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... [2018-12-08 15:16:21,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 15:16:21,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 15:16:21,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 15:16:21,631 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 15:16:21,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/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 [2018-12-08 15:16:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-08 15:16:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-08 15:16:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 15:16:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 15:16:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-08 15:16:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-08 15:16:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 15:16:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 15:16:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-08 15:16:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 15:16:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 15:16:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 15:16:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-08 15:16:21,665 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-08 15:16:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 15:16:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 15:16:21,797 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 15:16:21,797 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 15:16:21,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:16:21 BoogieIcfgContainer [2018-12-08 15:16:21,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 15:16:21,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 15:16:21,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 15:16:21,800 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 15:16:21,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:16:21" (1/3) ... [2018-12-08 15:16:21,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272ab049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:16:21, skipping insertion in model container [2018-12-08 15:16:21,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:21" (2/3) ... [2018-12-08 15:16:21,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272ab049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:16:21, skipping insertion in model container [2018-12-08 15:16:21,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:16:21" (3/3) ... [2018-12-08 15:16:21,802 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-12-08 15:16:21,808 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 15:16:21,813 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 15:16:21,822 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 15:16:21,840 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 15:16:21,840 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 15:16:21,840 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 15:16:21,840 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 15:16:21,840 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 15:16:21,841 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 15:16:21,841 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 15:16:21,841 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 15:16:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-08 15:16:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 15:16:21,855 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:21,855 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:21,857 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:21,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:21,860 INFO L82 PathProgramCache]: Analyzing trace with hash -248042727, now seen corresponding path program 1 times [2018-12-08 15:16:21,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 15:16:21,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:21,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:21,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:21,892 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 15:16:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:21,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:21,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 15:16:21,940 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 15:16:21,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 15:16:21,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 15:16:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 15:16:21,951 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-08 15:16:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:21,965 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-08 15:16:21,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 15:16:21,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-08 15:16:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:21,972 INFO L225 Difference]: With dead ends: 71 [2018-12-08 15:16:21,972 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 15:16:21,974 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 15:16:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 15:16:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-08 15:16:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-08 15:16:21,998 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-08 15:16:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:21,998 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-08 15:16:21,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 15:16:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-08 15:16:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 15:16:21,999 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:21,999 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:21,999 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:22,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:22,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1557048336, now seen corresponding path program 1 times [2018-12-08 15:16:22,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 15:16:22,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:22,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:22,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:22,001 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 15:16:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:22,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:22,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:22,048 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 15:16:22,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:22,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:22,049 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-08 15:16:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:22,065 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-08 15:16:22,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:22,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-08 15:16:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:22,067 INFO L225 Difference]: With dead ends: 51 [2018-12-08 15:16:22,067 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 15:16:22,068 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 15:16:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-08 15:16:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 15:16:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-08 15:16:22,072 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-08 15:16:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:22,072 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-08 15:16:22,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-08 15:16:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-08 15:16:22,073 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:22,073 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:22,073 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:22,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash 589129728, now seen corresponding path program 1 times [2018-12-08 15:16:22,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 15:16:22,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:22,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:22,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:22,075 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 15:16:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:22,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:22,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:22,107 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 15:16:22,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:22,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:22,108 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-08 15:16:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:22,122 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-08 15:16:22,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:22,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-08 15:16:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:22,123 INFO L225 Difference]: With dead ends: 55 [2018-12-08 15:16:22,123 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 15:16:22,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 15:16:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-08 15:16:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 15:16:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-08 15:16:22,127 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-08 15:16:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:22,127 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-08 15:16:22,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-08 15:16:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-08 15:16:22,128 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:22,128 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:22,128 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:22,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:22,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2096681537, now seen corresponding path program 1 times [2018-12-08 15:16:22,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 15:16:22,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:22,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:22,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 15:16:22,129 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 15:16:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:16:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 15:16:22,165 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 15:16:22,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:16:22 BoogieIcfgContainer [2018-12-08 15:16:22,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 15:16:22,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 15:16:22,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 15:16:22,182 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 15:16:22,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:16:21" (3/4) ... [2018-12-08 15:16:22,184 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 15:16:22,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 15:16:22,185 INFO L168 Benchmark]: Toolchain (without parser) took 757.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 950.8 MB in the beginning and 1.0 GB in the end (delta: -67.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:22,186 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:16:22,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.54 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:22,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.85 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 937.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:22,187 INFO L168 Benchmark]: Boogie Preprocessor took 47.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:22,187 INFO L168 Benchmark]: RCFGBuilder took 165.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:22,187 INFO L168 Benchmark]: TraceAbstraction took 383.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:22,188 INFO L168 Benchmark]: Witness Printer took 2.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:16:22,189 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 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.54 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 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 14.85 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 937.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 165.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 383.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967303, \old(y)=4294967304] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967303] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967303, x=4294967303] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; VAL [\old(x)=4294967303, \result=0, lsw=4294967297, msw=4293918721, x=4294967303] [L45] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967303, \old(y)=4294967304, __fpclassify_double(x)=0, x=4294967303, y=4294967304] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; VAL [\old(x)=4294967303, \old(y)=4294967304, \result=4294967304, x=4294967303, y=4294967304] [L63] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967304, x=4294967303, y=4294967304] [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967304] [L16] return x != x; VAL [\old(x)=4294967304, \result=0, x=4294967304] [L65] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967304, x=4294967303, y=4294967304] [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() VAL [res=4294967304, x=4294967303, y=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-08 15:16:23,544 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 15:16:23,545 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 15:16:23,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 15:16:23,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 15:16:23,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 15:16:23,553 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 15:16:23,554 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 15:16:23,555 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 15:16:23,556 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 15:16:23,557 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 15:16:23,557 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 15:16:23,557 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 15:16:23,558 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 15:16:23,559 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 15:16:23,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 15:16:23,560 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 15:16:23,561 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 15:16:23,562 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 15:16:23,563 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 15:16:23,564 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 15:16:23,565 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 15:16:23,567 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 15:16:23,567 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 15:16:23,567 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 15:16:23,567 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 15:16:23,568 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 15:16:23,569 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 15:16:23,569 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 15:16:23,570 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 15:16:23,570 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 15:16:23,571 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 15:16:23,571 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 15:16:23,571 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 15:16:23,572 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 15:16:23,572 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 15:16:23,572 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 15:16:23,583 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 15:16:23,583 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 15:16:23,584 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 15:16:23,584 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 15:16:23,584 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 15:16:23,584 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 15:16:23,584 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 15:16:23,584 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 15:16:23,584 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 15:16:23,585 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 15:16:23,585 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 15:16:23,585 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 15:16:23,585 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 15:16:23,585 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 15:16:23,585 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 15:16:23,586 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 15:16:23,586 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 15:16:23,586 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 15:16:23,586 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 15:16:23,586 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 15:16:23,586 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 15:16:23,586 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 15:16:23,587 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 15:16:23,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 15:16:23,587 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 15:16:23,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 15:16:23,587 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 15:16:23,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 15:16:23,587 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 15:16:23,587 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 15:16:23,587 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 15:16:23,588 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 15:16:23,588 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 15:16:23,588 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 15:16:23,588 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 15:16:23,588 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_4a22a95a-18cd-43d5-94c3-e76860bd2a25/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-12-08 15:16:23,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 15:16:23,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 15:16:23,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 15:16:23,625 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 15:16:23,625 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 15:16:23,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-08 15:16:23,669 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/aeb1b6c80/807a9e38b11443debb9cb4b2d19521bc/FLAGeb3dd6803 [2018-12-08 15:16:24,050 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 15:16:24,051 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-08 15:16:24,054 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/aeb1b6c80/807a9e38b11443debb9cb4b2d19521bc/FLAGeb3dd6803 [2018-12-08 15:16:24,062 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/data/aeb1b6c80/807a9e38b11443debb9cb4b2d19521bc [2018-12-08 15:16:24,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 15:16:24,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 15:16:24,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 15:16:24,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 15:16:24,067 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 15:16:24,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284ba15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24, skipping insertion in model container [2018-12-08 15:16:24,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 15:16:24,083 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 15:16:24,176 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:16:24,180 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 15:16:24,195 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 15:16:24,212 INFO L195 MainTranslator]: Completed translation [2018-12-08 15:16:24,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24 WrapperNode [2018-12-08 15:16:24,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 15:16:24,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 15:16:24,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 15:16:24,213 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 15:16:24,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 15:16:24,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 15:16:24,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 15:16:24,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 15:16:24,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... [2018-12-08 15:16:24,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 15:16:24,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 15:16:24,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 15:16:24,248 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 15:16:24,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/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 [2018-12-08 15:16:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-08 15:16:24,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-08 15:16:24,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-08 15:16:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 15:16:24,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 15:16:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-08 15:16:24,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-08 15:16:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 15:16:24,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 15:16:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 15:16:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 15:16:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 15:16:24,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 15:16:24,316 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-08 15:16:24,317 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-08 15:16:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 15:16:24,426 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 15:16:24,483 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 15:16:24,483 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 15:16:24,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:16:24 BoogieIcfgContainer [2018-12-08 15:16:24,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 15:16:24,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 15:16:24,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 15:16:24,486 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 15:16:24,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:16:24" (1/3) ... [2018-12-08 15:16:24,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5931ff28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:16:24, skipping insertion in model container [2018-12-08 15:16:24,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:16:24" (2/3) ... [2018-12-08 15:16:24,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5931ff28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:16:24, skipping insertion in model container [2018-12-08 15:16:24,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:16:24" (3/3) ... [2018-12-08 15:16:24,489 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-12-08 15:16:24,496 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 15:16:24,502 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 15:16:24,511 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 15:16:24,527 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 15:16:24,527 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 15:16:24,527 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 15:16:24,527 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 15:16:24,527 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 15:16:24,528 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 15:16:24,528 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 15:16:24,528 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 15:16:24,528 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 15:16:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-08 15:16:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-08 15:16:24,541 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:24,542 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:24,543 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:24,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:24,547 INFO L82 PathProgramCache]: Analyzing trace with hash 294947040, now seen corresponding path program 1 times [2018-12-08 15:16:24,549 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:24,549 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:24,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:24,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:24,616 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:24,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:24,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 15:16:24,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 15:16:24,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 15:16:24,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 15:16:24,636 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-08 15:16:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:24,649 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-08 15:16:24,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 15:16:24,649 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-08 15:16:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:24,655 INFO L225 Difference]: With dead ends: 65 [2018-12-08 15:16:24,655 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 15:16:24,658 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 15:16:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 15:16:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-08 15:16:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 15:16:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-08 15:16:24,683 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-08 15:16:24,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:24,683 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-08 15:16:24,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 15:16:24,683 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-08 15:16:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 15:16:24,685 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:24,685 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:24,685 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:24,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash 321884391, now seen corresponding path program 1 times [2018-12-08 15:16:24,686 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:24,686 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:24,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:24,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:24,760 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:24,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:24,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:24,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:24,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:24,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:24,769 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-08 15:16:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:24,792 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-08 15:16:24,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:24,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-08 15:16:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:24,795 INFO L225 Difference]: With dead ends: 46 [2018-12-08 15:16:24,795 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 15:16:24,795 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 15:16:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-08 15:16:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-08 15:16:24,800 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-08 15:16:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:24,801 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-08 15:16:24,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-08 15:16:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 15:16:24,801 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:24,801 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:24,802 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:24,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:24,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2098210685, now seen corresponding path program 1 times [2018-12-08 15:16:24,802 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:24,802 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:24,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:24,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:24,863 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:24,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:24,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:24,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:24,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:24,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:24,872 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-08 15:16:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:24,901 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-08 15:16:24,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:24,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-08 15:16:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:24,902 INFO L225 Difference]: With dead ends: 49 [2018-12-08 15:16:24,902 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 15:16:24,903 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 15:16:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-08 15:16:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-08 15:16:24,907 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-08 15:16:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:24,907 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-08 15:16:24,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-08 15:16:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 15:16:24,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:24,908 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:24,908 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:24,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:24,909 INFO L82 PathProgramCache]: Analyzing trace with hash -985358741, now seen corresponding path program 1 times [2018-12-08 15:16:24,909 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:24,909 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:24,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:24,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:24,965 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:24,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:24,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:24,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:24,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:24,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:24,974 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-08 15:16:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:25,001 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-08 15:16:25,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:25,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-08 15:16:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:25,002 INFO L225 Difference]: With dead ends: 49 [2018-12-08 15:16:25,002 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 15:16:25,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 15:16:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-08 15:16:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-08 15:16:25,008 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-08 15:16:25,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:25,008 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-08 15:16:25,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-08 15:16:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-08 15:16:25,009 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:25,009 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:25,009 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:25,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:25,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2020298873, now seen corresponding path program 1 times [2018-12-08 15:16:25,010 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:25,010 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:25,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:25,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:25,068 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:25,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:25,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:25,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:25,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:25,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:25,076 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-08 15:16:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:25,088 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-08 15:16:25,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:25,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-08 15:16:25,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:25,089 INFO L225 Difference]: With dead ends: 49 [2018-12-08 15:16:25,089 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 15:16:25,089 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 15:16:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-08 15:16:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-08 15:16:25,092 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-08 15:16:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:25,092 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-08 15:16:25,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-08 15:16:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-08 15:16:25,093 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:25,093 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:25,093 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:25,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:25,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1981265416, now seen corresponding path program 1 times [2018-12-08 15:16:25,094 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:25,094 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:25,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:25,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 15:16:25,255 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:25,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:25,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-08 15:16:25,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 15:16:25,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 15:16:25,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-08 15:16:25,263 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-08 15:16:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:25,453 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-08 15:16:25,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 15:16:25,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-08 15:16:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:25,454 INFO L225 Difference]: With dead ends: 43 [2018-12-08 15:16:25,455 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 15:16:25,455 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-08 15:16:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 15:16:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-08 15:16:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 15:16:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-08 15:16:25,458 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-08 15:16:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:25,458 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-08 15:16:25,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 15:16:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-08 15:16:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-08 15:16:25,458 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:25,459 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:25,459 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:25,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:25,459 INFO L82 PathProgramCache]: Analyzing trace with hash 225868180, now seen corresponding path program 1 times [2018-12-08 15:16:25,459 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:25,459 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:25,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:25,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 15:16:25,533 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:25,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:25,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:25,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:25,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:25,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:25,541 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-08 15:16:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:25,560 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-08 15:16:25,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:25,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-08 15:16:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:25,561 INFO L225 Difference]: With dead ends: 46 [2018-12-08 15:16:25,561 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 15:16:25,562 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:25,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 15:16:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-08 15:16:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-08 15:16:25,565 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-08 15:16:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:25,565 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-08 15:16:25,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-08 15:16:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-08 15:16:25,565 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:25,565 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:25,566 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:25,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:25,566 INFO L82 PathProgramCache]: Analyzing trace with hash -924592112, now seen corresponding path program 1 times [2018-12-08 15:16:25,566 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:25,566 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:25,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:25,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 15:16:25,636 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:25,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:25,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:25,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:25,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:25,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:25,644 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-08 15:16:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:25,664 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-08 15:16:25,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:25,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-08 15:16:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:25,665 INFO L225 Difference]: With dead ends: 49 [2018-12-08 15:16:25,666 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 15:16:25,666 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 15:16:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-08 15:16:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-08 15:16:25,670 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-08 15:16:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:25,670 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-08 15:16:25,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-08 15:16:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-08 15:16:25,671 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:25,671 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:25,672 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:25,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:25,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1139309745, now seen corresponding path program 1 times [2018-12-08 15:16:25,672 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:25,672 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:25,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:25,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 15:16:25,818 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:25,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:25,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 15:16:25,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 15:16:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 15:16:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 15:16:25,826 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2018-12-08 15:16:26,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:26,144 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-12-08 15:16:26,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 15:16:26,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-08 15:16:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:26,146 INFO L225 Difference]: With dead ends: 47 [2018-12-08 15:16:26,146 INFO L226 Difference]: Without dead ends: 36 [2018-12-08 15:16:26,146 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 15:16:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-08 15:16:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-08 15:16:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 15:16:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-08 15:16:26,149 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-08 15:16:26,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:26,149 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-08 15:16:26,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 15:16:26,149 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-08 15:16:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-08 15:16:26,149 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:26,149 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:26,150 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:26,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:26,150 INFO L82 PathProgramCache]: Analyzing trace with hash -438245167, now seen corresponding path program 1 times [2018-12-08 15:16:26,150 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:26,150 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:26,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:26,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 15:16:26,335 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:26,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:26,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-08 15:16:26,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 15:16:26,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 15:16:26,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-08 15:16:26,343 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 10 states. [2018-12-08 15:16:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:26,654 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-12-08 15:16:26,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-08 15:16:26,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-08 15:16:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:26,655 INFO L225 Difference]: With dead ends: 43 [2018-12-08 15:16:26,655 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 15:16:26,655 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-08 15:16:26,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 15:16:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-08 15:16:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 15:16:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-08 15:16:26,657 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-08 15:16:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:26,658 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-08 15:16:26,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 15:16:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-08 15:16:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-08 15:16:26,658 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:26,658 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:26,659 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:26,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:26,659 INFO L82 PathProgramCache]: Analyzing trace with hash 892232472, now seen corresponding path program 1 times [2018-12-08 15:16:26,659 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:26,660 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:26,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:26,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 15:16:26,721 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:26,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:26,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:26,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:26,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:26,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:26,729 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-08 15:16:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:26,745 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-08 15:16:26,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:26,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-08 15:16:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:26,746 INFO L225 Difference]: With dead ends: 46 [2018-12-08 15:16:26,746 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 15:16:26,747 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 15:16:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-08 15:16:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 15:16:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-08 15:16:26,749 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-08 15:16:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:26,749 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-08 15:16:26,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-08 15:16:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-08 15:16:26,750 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:26,750 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:26,750 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:26,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:26,750 INFO L82 PathProgramCache]: Analyzing trace with hash 205607700, now seen corresponding path program 1 times [2018-12-08 15:16:26,751 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:26,751 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:26,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:26,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 15:16:26,814 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:26,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:26,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 15:16:26,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 15:16:26,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 15:16:26,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:26,822 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-08 15:16:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:26,838 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-08 15:16:26,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 15:16:26,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-08 15:16:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:26,839 INFO L225 Difference]: With dead ends: 46 [2018-12-08 15:16:26,839 INFO L226 Difference]: Without dead ends: 35 [2018-12-08 15:16:26,839 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 15:16:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-08 15:16:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-08 15:16:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 15:16:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-08 15:16:26,842 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-08 15:16:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:26,842 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-08 15:16:26,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 15:16:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-08 15:16:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-08 15:16:26,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 15:16:26,843 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 15:16:26,843 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 15:16:26,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 15:16:26,843 INFO L82 PathProgramCache]: Analyzing trace with hash -87795307, now seen corresponding path program 1 times [2018-12-08 15:16:26,844 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 15:16:26,844 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-08 15:16:26,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 15:16:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 15:16:26,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 15:16:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 15:16:26,999 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 15:16:27,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 15:16:27,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-08 15:16:27,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 15:16:27,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 15:16:27,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-08 15:16:27,008 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-08 15:16:27,319 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-12-08 15:16:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 15:16:27,403 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-08 15:16:27,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 15:16:27,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-08 15:16:27,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 15:16:27,404 INFO L225 Difference]: With dead ends: 33 [2018-12-08 15:16:27,404 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 15:16:27,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-08 15:16:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 15:16:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 15:16:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 15:16:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 15:16:27,404 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-08 15:16:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 15:16:27,405 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 15:16:27,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 15:16:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 15:16:27,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 15:16:27,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 15:16:27,572 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-08 15:16:27,572 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L451 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: true [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 17 42) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 15:16:27,573 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 15:16:27,574 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L444 ceAbstractionStarter]: At program point L65(line 65) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point L65-1(lines 65 68) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L444 ceAbstractionStarter]: At program point L63(line 63) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point L63-1(line 63) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 53 71) the Hoare annotation is: true [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 53 71) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 53 71) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-12-08 15:16:27,574 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-08 15:16:27,575 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-08 15:16:27,575 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-12-08 15:16:27,575 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-12-08 15:16:27,575 INFO L444 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-12-08 15:16:27,575 INFO L448 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-12-08 15:16:27,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:16:27 BoogieIcfgContainer [2018-12-08 15:16:27,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 15:16:27,578 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 15:16:27,578 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 15:16:27,579 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 15:16:27,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:16:24" (3/4) ... [2018-12-08 15:16:27,581 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 15:16:27,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-08 15:16:27,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-08 15:16:27,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 15:16:27,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 15:16:27,585 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-12-08 15:16:27,588 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-08 15:16:27,588 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-08 15:16:27,588 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 15:16:27,616 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4a22a95a-18cd-43d5-94c3-e76860bd2a25/bin-2019/utaipan/witness.graphml [2018-12-08 15:16:27,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 15:16:27,617 INFO L168 Benchmark]: Toolchain (without parser) took 3552.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 204.5 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -242.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:16:27,617 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:16:27,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.20 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:27,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.59 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:27,618 INFO L168 Benchmark]: Boogie Preprocessor took 19.56 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:16:27,618 INFO L168 Benchmark]: RCFGBuilder took 235.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:27,618 INFO L168 Benchmark]: TraceAbstraction took 3094.36 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -78.2 MB). Peak memory consumption was 311.8 MB. Max. memory is 11.5 GB. [2018-12-08 15:16:27,619 INFO L168 Benchmark]: Witness Printer took 38.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 15:16:27,620 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.20 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 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 15.59 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.56 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 235.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3094.36 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -78.2 MB). Peak memory consumption was 311.8 MB. Max. memory is 11.5 GB. * Witness Printer took 38.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: 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: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 497 SDtfs, 31 SDslu, 1314 SDs, 0 SdLazy, 218 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21339 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...