./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f8d72d06ca136037e1a4f2d3dda81b71758b03c ....................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f8d72d06ca136037e1a4f2d3dda81b71758b03c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:25,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:25,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:25,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:25,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:25,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:25,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:25,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:25,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:25,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:25,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:25,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:25,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:25,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:25,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:25,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:25,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:25,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:25,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:25,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:25,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:25,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:25,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:25,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:25,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:25,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:25,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:25,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:25,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:25,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:25,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:25,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:25,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:25,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:25,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:25,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:25,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:25,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:25,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:25,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:25,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:25,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:25,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:25,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:25,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:25,693 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:25,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:25,695 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:25,695 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:25,695 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:25,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:25,699 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:25,699 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:25,699 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:25,700 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:25,700 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:25,700 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:25,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:25,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:25,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:25,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:25,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:25,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:25,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:25,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:25,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:25,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:25,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:25,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:25,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:25,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:25,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:25,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:25,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:25,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:25,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:25,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:25,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:25,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:25,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:25,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:25,708 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f8d72d06ca136037e1a4f2d3dda81b71758b03c [2021-10-11 02:23:25,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:25,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:25,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:25,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:25,988 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:25,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2021-10-11 02:23:26,081 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/ff7ea83c0/eff0a1db54944dcf8d244d1d1d84dcda/FLAG09cbbf031 [2021-10-11 02:23:26,499 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:26,500 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2021-10-11 02:23:26,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/ff7ea83c0/eff0a1db54944dcf8d244d1d1d84dcda/FLAG09cbbf031 [2021-10-11 02:23:26,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/ff7ea83c0/eff0a1db54944dcf8d244d1d1d84dcda [2021-10-11 02:23:26,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:26,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:26,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:26,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:26,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:26,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:26" (1/1) ... [2021-10-11 02:23:26,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d496c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:26, skipping insertion in model container [2021-10-11 02:23:26,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:26" (1/1) ... [2021-10-11 02:23:26,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:26,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:27,124 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2021-10-11 02:23:27,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:27,136 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:27,158 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2021-10-11 02:23:27,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:27,172 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:27,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27 WrapperNode [2021-10-11 02:23:27,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:27,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:27,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:27,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:27,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:27,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:27,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:27,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:27,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... [2021-10-11 02:23:27,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:27,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:27,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:27,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:27,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:27,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:23:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:27,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:27,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:23:27,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:27,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:27,984 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:23:27,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:27 BoogieIcfgContainer [2021-10-11 02:23:27,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:27,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:27,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:27,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:27,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:26" (1/3) ... [2021-10-11 02:23:27,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a96b7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:27, skipping insertion in model container [2021-10-11 02:23:27,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:27" (2/3) ... [2021-10-11 02:23:27,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a96b7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:27, skipping insertion in model container [2021-10-11 02:23:27,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:27" (3/3) ... [2021-10-11 02:23:27,996 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2021-10-11 02:23:28,012 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:28,016 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:28,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:28,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:28,064 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:28,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:28,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:28,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:28,065 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:28,065 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:28,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 02:23:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:23:28,084 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:28,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:28,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:28,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1290073606, now seen corresponding path program 1 times [2021-10-11 02:23:28,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:28,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704635050] [2021-10-11 02:23:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:28,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704635050] [2021-10-11 02:23:28,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:28,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:28,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119717892] [2021-10-11 02:23:28,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:28,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:28,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:28,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:28,258 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2021-10-11 02:23:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:28,274 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-11 02:23:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:28,276 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:23:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:28,284 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:23:28,284 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:23:28,287 INFO L677 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 [2021-10-11 02:23:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:23:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:23:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:23:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-11 02:23:28,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2021-10-11 02:23:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:28,318 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-11 02:23:28,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-11 02:23:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:23:28,319 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:28,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:28,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:28,320 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2020119981, now seen corresponding path program 1 times [2021-10-11 02:23:28,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:28,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277154171] [2021-10-11 02:23:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:28,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:23:28,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:23:28,426 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:23:28,427 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:23:28,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:28,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:28 BoogieIcfgContainer [2021-10-11 02:23:28,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:28,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:28,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:28,454 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:28,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:27" (3/4) ... [2021-10-11 02:23:28,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:23:28,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:28,460 INFO L168 Benchmark]: Toolchain (without parser) took 1551.72 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 54.8 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:28,462 INFO L168 Benchmark]: CDTParser took 7.54 ms. Allocated memory is still 75.5 MB. Free memory was 36.0 MB in the beginning and 53.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:28,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.53 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 81.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:28,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.08 ms. Allocated memory is still 104.9 MB. Free memory was 81.4 MB in the beginning and 79.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:28,464 INFO L168 Benchmark]: Boogie Preprocessor took 31.63 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:28,465 INFO L168 Benchmark]: RCFGBuilder took 738.85 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 77.4 MB in the end (delta: 757.9 kB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:28,466 INFO L168 Benchmark]: TraceAbstraction took 464.80 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 54.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:28,466 INFO L168 Benchmark]: Witness Printer took 4.99 ms. Allocated memory is still 104.9 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:28,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 7.54 ms. Allocated memory is still 75.5 MB. Free memory was 36.0 MB in the beginning and 53.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.53 ms. Allocated memory is still 104.9 MB. Free memory was 73.1 MB in the beginning and 81.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.08 ms. Allocated memory is still 104.9 MB. Free memory was 81.4 MB in the beginning and 79.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.63 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 738.85 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 77.4 MB in the end (delta: 757.9 kB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 464.80 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 54.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.99 ms. Allocated memory is still 104.9 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L74] float x = -0.0f; [L75] float y = 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: 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 0.2.0-7b2dab5 [2021-10-11 02:23:31,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:31,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:31,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:31,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:31,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:31,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:31,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:31,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:31,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:31,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:31,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:31,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:31,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:31,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:31,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:31,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:31,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:31,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:31,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:31,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:31,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:31,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:31,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:31,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:31,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:31,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:31,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:31,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:31,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:31,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:31,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:31,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:31,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:31,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:31,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:31,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:31,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:31,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:31,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:31,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:31,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:23:31,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:31,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:31,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:31,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:31,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:31,234 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:31,235 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:31,235 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:31,235 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:31,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:31,238 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:31,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:31,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:31,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:31,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:31,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:31,239 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:31,239 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:23:31,239 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:23:31,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:31,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:31,240 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:31,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:31,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:31,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:23:31,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:31,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:31,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:31,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:31,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:31,242 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:23:31,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:23:31,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:31,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:31,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:31,244 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f8d72d06ca136037e1a4f2d3dda81b71758b03c [2021-10-11 02:23:31,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:31,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:31,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:31,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:31,643 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:31,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2021-10-11 02:23:31,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/3e9ba96fd/0645dc8dff834032abe93c65f5efa9c8/FLAGa558e9d7a [2021-10-11 02:23:32,308 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:32,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2021-10-11 02:23:32,324 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/3e9ba96fd/0645dc8dff834032abe93c65f5efa9c8/FLAGa558e9d7a [2021-10-11 02:23:32,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/data/3e9ba96fd/0645dc8dff834032abe93c65f5efa9c8 [2021-10-11 02:23:32,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:32,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:32,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:32,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:32,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:32,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7663de8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32, skipping insertion in model container [2021-10-11 02:23:32,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:32,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:32,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:32,891 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2021-10-11 02:23:32,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:32,919 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:32,976 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2021-10-11 02:23:32,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:32,997 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:32,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32 WrapperNode [2021-10-11 02:23:32,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:32,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:33,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:33,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:33,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:33,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:33,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:33,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:33,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... [2021-10-11 02:23:33,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:33,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:33,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:33,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:33,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:23:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:23:33,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:33,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:23:33,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:23:33,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:33,657 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:23:33,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:33 BoogieIcfgContainer [2021-10-11 02:23:33,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:33,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:33,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:33,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:33,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:32" (1/3) ... [2021-10-11 02:23:33,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d97fec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:33, skipping insertion in model container [2021-10-11 02:23:33,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:32" (2/3) ... [2021-10-11 02:23:33,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d97fec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:33, skipping insertion in model container [2021-10-11 02:23:33,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:33" (3/3) ... [2021-10-11 02:23:33,667 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2021-10-11 02:23:33,680 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:33,683 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:33,694 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:33,749 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:33,749 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:33,749 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:33,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:33,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:33,750 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:33,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:33,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-10-11 02:23:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:23:33,772 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:33,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:33,773 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:33,780 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-11 02:23:33,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:33,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232007810] [2021-10-11 02:23:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:33,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:23:33,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:33,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:33,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232007810] [2021-10-11 02:23:33,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:33,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:33,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370020241] [2021-10-11 02:23:33,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:23:33,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:33,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:23:33,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:33,998 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2021-10-11 02:23:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:34,016 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-11 02:23:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:23:34,017 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:23:34,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:34,026 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:23:34,026 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:23:34,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:23:34,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:23:34,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:23:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:23:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-11 02:23:34,062 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-11 02:23:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:34,062 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-11 02:23:34,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:23:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-11 02:23:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:23:34,063 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:34,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:34,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:23:34,280 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:34,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:34,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-11 02:23:34,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:34,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276594462] [2021-10-11 02:23:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:34,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:34,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:34,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:34,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276594462] [2021-10-11 02:23:34,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:34,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:34,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208194256] [2021-10-11 02:23:34,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:34,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:34,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:34,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:34,466 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2021-10-11 02:23:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:34,536 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-10-11 02:23:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:34,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:23:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:34,538 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:23:34,538 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 02:23:34,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 02:23:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-11 02:23:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:23:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-11 02:23:34,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-11 02:23:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:34,547 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-11 02:23:34,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-11 02:23:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:23:34,549 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:34,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:34,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:23:34,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:34,761 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-10-11 02:23:34,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:34,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209352317] [2021-10-11 02:23:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:34,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:23:34,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:34,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:34,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209352317] [2021-10-11 02:23:34,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:34,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:34,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955103875] [2021-10-11 02:23:34,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:34,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:34,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:34,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:34,886 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2021-10-11 02:23:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:34,936 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2021-10-11 02:23:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:34,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:23:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:34,937 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:23:34,938 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:23:34,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:23:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-11 02:23:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:23:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-10-11 02:23:34,943 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2021-10-11 02:23:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:34,944 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-10-11 02:23:34,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-10-11 02:23:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:23:34,945 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:34,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:35,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:23:35,163 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:35,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:35,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-11 02:23:35,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:35,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887219609] [2021-10-11 02:23:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:35,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:35,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:35,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:35,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887219609] [2021-10-11 02:23:35,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:35,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:35,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515488815] [2021-10-11 02:23:35,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:35,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:35,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:35,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:35,287 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2021-10-11 02:23:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:35,369 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-10-11 02:23:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:35,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:23:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:35,371 INFO L225 Difference]: With dead ends: 48 [2021-10-11 02:23:35,371 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:23:35,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:23:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-10-11 02:23:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:23:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-11 02:23:35,380 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2021-10-11 02:23:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:35,381 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-11 02:23:35,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-11 02:23:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:23:35,381 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:35,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:35,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:23:35,604 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2021-10-11 02:23:35,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:35,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649707618] [2021-10-11 02:23:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:35,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:23:35,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:35,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:35,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649707618] [2021-10-11 02:23:35,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:35,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:23:35,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903433849] [2021-10-11 02:23:35,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:23:35,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:35,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:23:35,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:23:35,771 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2021-10-11 02:23:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:35,855 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-10-11 02:23:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:35,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 02:23:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:35,856 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:23:35,856 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:23:35,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:23:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:23:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:23:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:23:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-11 02:23:35,861 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2021-10-11 02:23:35,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:35,861 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-11 02:23:35,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:23:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-11 02:23:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:23:35,862 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:35,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:36,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:23:36,085 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:36,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:36,086 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-11 02:23:36,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:36,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721563682] [2021-10-11 02:23:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:36,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:23:36,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:36,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:36,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721563682] [2021-10-11 02:23:36,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:36,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:36,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347875733] [2021-10-11 02:23:36,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:36,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:36,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:36,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:36,213 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2021-10-11 02:23:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:36,223 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-11 02:23:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:36,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-10-11 02:23:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:36,227 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:23:36,227 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:23:36,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:36,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:23:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:23:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:23:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-11 02:23:36,233 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2021-10-11 02:23:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:36,234 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-11 02:23:36,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-11 02:23:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:23:36,235 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:36,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:36,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:23:36,451 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:36,452 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-11 02:23:36,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:36,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126430879] [2021-10-11 02:23:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:36,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:23:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:36,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:36,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126430879] [2021-10-11 02:23:36,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:36,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:23:36,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999270310] [2021-10-11 02:23:36,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:23:36,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:36,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:23:36,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:23:36,589 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2021-10-11 02:23:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:36,653 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-11 02:23:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:23:36,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-10-11 02:23:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:36,654 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:23:36,654 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:23:36,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:23:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:23:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:23:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:23:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-11 02:23:36,658 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2021-10-11 02:23:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:36,658 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-11 02:23:36,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:23:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-11 02:23:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:23:36,659 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:36,659 INFO L422 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] [2021-10-11 02:23:36,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:23:36,877 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:36,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-11 02:23:36,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:23:36,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254331946] [2021-10-11 02:23:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:36,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:23:36,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:37,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:23:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:37,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:23:37,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254331946] [2021-10-11 02:23:37,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:37,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-11 02:23:37,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63729416] [2021-10-11 02:23:37,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:23:37,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:23:37,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:23:37,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:23:37,107 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 10 states. [2021-10-11 02:23:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:37,294 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-11 02:23:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:23:37,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2021-10-11 02:23:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:37,296 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:23:37,296 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:37,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:23:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:37,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-11 02:23:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:37,297 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:37,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:23:37,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:37,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:37,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:23:37,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:37,715 INFO L265 CegarLoopResult]: At program point L85(lines 67 86) the Hoare annotation is: true [2021-10-11 02:23:37,715 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2021-10-11 02:23:37,715 INFO L262 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-10-11 02:23:37,716 INFO L258 CegarLoopResult]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2021-10-11 02:23:37,716 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:37,716 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:23:37,716 INFO L262 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-10-11 02:23:37,716 INFO L262 CegarLoopResult]: For program point L38(lines 38 41) no Hoare annotation was computed. [2021-10-11 02:23:37,716 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2021-10-11 02:23:37,716 INFO L262 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-11 02:23:37,716 INFO L262 CegarLoopResult]: For program point L80-2(lines 80 83) no Hoare annotation was computed. [2021-10-11 02:23:37,717 INFO L258 CegarLoopResult]: At program point L64(lines 55 65) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2021-10-11 02:23:37,717 INFO L262 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2021-10-11 02:23:37,717 INFO L262 CegarLoopResult]: For program point L32(lines 32 41) no Hoare annotation was computed. [2021-10-11 02:23:37,717 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:23:37,717 INFO L262 CegarLoopResult]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2021-10-11 02:23:37,717 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2021-10-11 02:23:37,717 INFO L262 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-10-11 02:23:37,717 INFO L258 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmax_float_~x .cse0) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)))) [2021-10-11 02:23:37,717 INFO L262 CegarLoopResult]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2021-10-11 02:23:37,718 INFO L262 CegarLoopResult]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2021-10-11 02:23:37,718 INFO L258 CegarLoopResult]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2021-10-11 02:23:37,718 INFO L262 CegarLoopResult]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2021-10-11 02:23:37,718 INFO L262 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2021-10-11 02:23:37,718 INFO L258 CegarLoopResult]: At program point L41(lines 21 42) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= ULTIMATE.start_fmax_float_~x .cse0) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24)))) [2021-10-11 02:23:37,718 INFO L258 CegarLoopResult]: At program point L41-1(lines 21 42) the Hoare annotation is: (and (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2021-10-11 02:23:37,718 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:37,719 INFO L262 CegarLoopResult]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2021-10-11 02:23:37,719 INFO L258 CegarLoopResult]: At program point L58-2(lines 58 62) the Hoare annotation is: (and (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= (_ +zero 8 24) |ULTIMATE.start_fmax_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) |ULTIMATE.start_main_#t~short14| (= ULTIMATE.start_fmax_float_~y (_ +zero 8 24))) [2021-10-11 02:23:37,719 INFO L262 CegarLoopResult]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2021-10-11 02:23:37,719 INFO L262 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2021-10-11 02:23:37,719 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2021-10-11 02:23:37,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:37 BoogieIcfgContainer [2021-10-11 02:23:37,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:37,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:37,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:37,759 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:37,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:33" (3/4) ... [2021-10-11 02:23:37,762 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:37,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-11 02:23:37,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:23:37,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:23:37,776 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:37,803 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2021-10-11 02:23:37,803 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2021-10-11 02:23:37,804 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() [2021-10-11 02:23:37,804 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() [2021-10-11 02:23:37,805 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() [2021-10-11 02:23:37,848 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26f9bad7-7648-4317-ae54-455552b38509/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:37,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:37,849 INFO L168 Benchmark]: Toolchain (without parser) took 5179.39 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 55.2 MB in the beginning and 51.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:37,850 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 53.7 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:37,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.97 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 55.5 MB in the end (delta: -382.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:37,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.38 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 53.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:37,851 INFO L168 Benchmark]: Boogie Preprocessor took 56.77 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 52.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:37,852 INFO L168 Benchmark]: RCFGBuilder took 556.05 ms. Allocated memory is still 73.4 MB. Free memory was 52.2 MB in the beginning and 32.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:37,852 INFO L168 Benchmark]: TraceAbstraction took 4097.28 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 32.4 MB in the beginning and 55.8 MB in the end (delta: -23.4 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:37,852 INFO L168 Benchmark]: Witness Printer took 89.64 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 51.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:37,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 53.7 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.97 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 55.5 MB in the end (delta: -382.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.38 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 53.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.77 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 52.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 556.05 ms. Allocated memory is still 73.4 MB. Free memory was 52.2 MB in the beginning and 32.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4097.28 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 32.4 MB in the beginning and 55.8 MB in the end (delta: -23.4 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Witness Printer took 89.64 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 51.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == x && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == res && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 2bv32 == \result) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~Pluszero~LONGDOUBLE() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 226 SDtfs, 141 SDslu, 293 SDs, 0 SdLazy, 124 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 167 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5340 SizeOfPredicates, 38 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...