./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1052d_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052d_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8314f0a25d0cae1024b24eed74020923c3a8036e ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052d_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8314f0a25d0cae1024b24eed74020923c3a8036e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 16:13:30,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:13:30,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:13:30,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:13:30,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:13:30,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:13:30,773 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:13:30,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:13:30,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:13:30,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:13:30,776 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:13:30,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:13:30,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:13:30,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:13:30,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:13:30,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:13:30,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:13:30,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:13:30,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:13:30,781 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:13:30,782 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:13:30,782 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:13:30,784 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:13:30,784 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:13:30,784 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:13:30,784 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:13:30,785 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:13:30,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:13:30,786 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:13:30,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:13:30,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:13:30,787 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:13:30,787 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:13:30,787 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:13:30,788 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:13:30,788 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:13:30,788 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 16:13:30,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:13:30,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:13:30,796 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:13:30,796 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:13:30,796 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:13:30,796 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:13:30,796 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:13:30,796 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 16:13:30,797 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:13:30,797 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:13:30,797 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 16:13:30,797 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 16:13:30,797 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:13:30,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:13:30,798 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:13:30,799 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:13:30,799 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:13:30,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:13:30,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:13:30,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:13:30,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:13:30,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:13:30,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:13:30,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:13:30,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:13:30,800 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 16:13:30,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:13:30,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 16:13:30,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 16:13:30,800 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8314f0a25d0cae1024b24eed74020923c3a8036e [2018-12-09 16:13:30,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:13:30,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:13:30,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:13:30,827 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:13:30,827 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:13:30,827 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-12-09 16:13:30,862 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/21b3b7209/7dbf758d2e214208ae55f5f632477b5f/FLAG129b16041 [2018-12-09 16:13:31,280 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:13:31,280 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/sv-benchmarks/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-12-09 16:13:31,284 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/21b3b7209/7dbf758d2e214208ae55f5f632477b5f/FLAG129b16041 [2018-12-09 16:13:31,292 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/21b3b7209/7dbf758d2e214208ae55f5f632477b5f [2018-12-09 16:13:31,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:13:31,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:13:31,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:13:31,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:13:31,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:13:31,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31, skipping insertion in model container [2018-12-09 16:13:31,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:13:31,319 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:13:31,418 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:13:31,420 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:13:31,439 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:13:31,451 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:13:31,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31 WrapperNode [2018-12-09 16:13:31,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:13:31,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:13:31,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:13:31,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:13:31,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:13:31,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:13:31,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:13:31,472 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:13:31,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... [2018-12-09 16:13:31,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:13:31,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:13:31,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:13:31,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:13:31,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:13:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-09 16:13:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 16:13:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:13:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:13:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 16:13:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:13:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-12-09 16:13:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-12-09 16:13:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:13:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:13:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 16:13:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:13:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:13:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 16:13:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 16:13:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:13:31,690 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:13:31,690 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 16:13:31,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:13:31 BoogieIcfgContainer [2018-12-09 16:13:31,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:13:31,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:13:31,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:13:31,693 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:13:31,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:13:31" (1/3) ... [2018-12-09 16:13:31,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd756a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:13:31, skipping insertion in model container [2018-12-09 16:13:31,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:31" (2/3) ... [2018-12-09 16:13:31,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd756a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:13:31, skipping insertion in model container [2018-12-09 16:13:31,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:13:31" (3/3) ... [2018-12-09 16:13:31,695 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d_true-unreach-call.c [2018-12-09 16:13:31,701 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:13:31,706 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 16:13:31,715 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 16:13:31,733 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:13:31,733 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:13:31,733 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:13:31,734 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:13:31,734 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:13:31,734 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:13:31,734 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:13:31,734 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:13:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-09 16:13:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 16:13:31,748 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:31,748 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:31,750 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:31,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:31,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2018-12-09 16:13:31,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:13:31,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:13:31,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:31,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:13:31,785 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:13:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:31,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:31,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:13:31,841 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 16:13:31,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 16:13:31,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 16:13:31,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:13:31,853 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-09 16:13:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:31,868 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-09 16:13:31,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 16:13:31,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-09 16:13:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:31,874 INFO L225 Difference]: With dead ends: 78 [2018-12-09 16:13:31,875 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 16:13:31,877 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:13:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 16:13:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 16:13:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 16:13:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-09 16:13:31,901 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-09 16:13:31,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:31,901 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-09 16:13:31,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 16:13:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-09 16:13:31,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 16:13:31,902 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:31,902 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:31,903 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:31,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:31,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2018-12-09 16:13:31,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:13:31,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:13:31,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:31,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:13:31,904 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:13:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:13:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 16:13:31,974 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 16:13:31,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:13:31 BoogieIcfgContainer [2018-12-09 16:13:31,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:13:31,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:13:31,991 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:13:31,991 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:13:31,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:13:31" (3/4) ... [2018-12-09 16:13:31,993 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 16:13:31,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:13:31,994 INFO L168 Benchmark]: Toolchain (without parser) took 699.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -108.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:31,995 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:13:31,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.53 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:31,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.96 ms. Allocated memory is still 1.0 GB. Free memory was 942.7 MB in the beginning and 937.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:31,996 INFO L168 Benchmark]: Boogie Preprocessor took 47.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 937.4 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:31,996 INFO L168 Benchmark]: RCFGBuilder took 170.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:31,997 INFO L168 Benchmark]: TraceAbstraction took 299.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:31,997 INFO L168 Benchmark]: Witness Printer took 2.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:13:31,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.53 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.96 ms. Allocated memory is still 1.0 GB. Free memory was 942.7 MB in the beginning and 937.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 937.4 MB in the beginning and 1.1 GB in the end (delta: -180.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 170.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 299.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=6442450947, huge_floor=1000000000000000000000000000000] [L75] float x = 0.0f; VAL [huge_floor=1000000000000000000000000000000, x=0] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, x=0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=0] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=0] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=0] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=6442450946, huge_floor=1000000000000000000000000000000, x=0] [L76] float res = floor_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_floor=1000000000000000000000000000000, res=6442450946, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=6442450946, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 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=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 16:13:33,269 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 16:13:33,270 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 16:13:33,275 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 16:13:33,276 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 16:13:33,276 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 16:13:33,277 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 16:13:33,278 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 16:13:33,278 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 16:13:33,279 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 16:13:33,279 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 16:13:33,279 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 16:13:33,280 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 16:13:33,280 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 16:13:33,281 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 16:13:33,281 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 16:13:33,282 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 16:13:33,282 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 16:13:33,283 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 16:13:33,284 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 16:13:33,284 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 16:13:33,285 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 16:13:33,286 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 16:13:33,286 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 16:13:33,286 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 16:13:33,287 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 16:13:33,287 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 16:13:33,288 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 16:13:33,288 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 16:13:33,289 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 16:13:33,289 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 16:13:33,289 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 16:13:33,289 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 16:13:33,289 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 16:13:33,290 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 16:13:33,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 16:13:33,290 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 16:13:33,297 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 16:13:33,298 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 16:13:33,298 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 16:13:33,298 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 16:13:33,298 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 16:13:33,299 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 16:13:33,299 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 16:13:33,299 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 16:13:33,299 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 16:13:33,299 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 16:13:33,299 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 16:13:33,299 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 16:13:33,299 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 16:13:33,300 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 16:13:33,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:13:33,301 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 16:13:33,301 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 16:13:33,302 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 16:13:33,302 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8314f0a25d0cae1024b24eed74020923c3a8036e [2018-12-09 16:13:33,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 16:13:33,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 16:13:33,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 16:13:33,333 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 16:13:33,334 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 16:13:33,334 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-12-09 16:13:33,372 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/d94806414/a018a2cafa154a889a99d2928ed73ce4/FLAG41defda5e [2018-12-09 16:13:33,805 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 16:13:33,805 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/sv-benchmarks/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-12-09 16:13:33,811 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/d94806414/a018a2cafa154a889a99d2928ed73ce4/FLAG41defda5e [2018-12-09 16:13:33,819 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/data/d94806414/a018a2cafa154a889a99d2928ed73ce4 [2018-12-09 16:13:33,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 16:13:33,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 16:13:33,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 16:13:33,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 16:13:33,826 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 16:13:33,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:33,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33, skipping insertion in model container [2018-12-09 16:13:33,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:33,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 16:13:33,849 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 16:13:33,956 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:13:33,960 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 16:13:33,979 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 16:13:33,994 INFO L195 MainTranslator]: Completed translation [2018-12-09 16:13:33,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33 WrapperNode [2018-12-09 16:13:33,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 16:13:33,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 16:13:33,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 16:13:33,995 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 16:13:34,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 16:13:34,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 16:13:34,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 16:13:34,011 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 16:13:34,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... [2018-12-09 16:13:34,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 16:13:34,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 16:13:34,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 16:13:34,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 16:13:34,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 16:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 16:13:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 16:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 16:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 16:13:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-12-09 16:13:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-12-09 16:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 16:13:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 16:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-09 16:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 16:13:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 16:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-09 16:13:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-09 16:13:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-09 16:13:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 16:13:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 16:13:34,186 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:13:34,488 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 16:13:34,494 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 16:13:34,494 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 16:13:34,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:13:34 BoogieIcfgContainer [2018-12-09 16:13:34,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 16:13:34,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 16:13:34,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 16:13:34,496 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 16:13:34,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:13:33" (1/3) ... [2018-12-09 16:13:34,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca9f7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:13:34, skipping insertion in model container [2018-12-09 16:13:34,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:13:33" (2/3) ... [2018-12-09 16:13:34,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca9f7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:13:34, skipping insertion in model container [2018-12-09 16:13:34,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:13:34" (3/3) ... [2018-12-09 16:13:34,498 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d_true-unreach-call.c [2018-12-09 16:13:34,503 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 16:13:34,507 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 16:13:34,516 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 16:13:34,532 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 16:13:34,532 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 16:13:34,533 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 16:13:34,533 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 16:13:34,533 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 16:13:34,533 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 16:13:34,533 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 16:13:34,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 16:13:34,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 16:13:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-09 16:13:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 16:13:34,545 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:34,546 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:34,547 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:34,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:34,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2018-12-09 16:13:34,552 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:13:34,552 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 16:13:34,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:34,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:13:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:34,612 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:13:34,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:34,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 16:13:34,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 16:13:34,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 16:13:34,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:13:34,630 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-12-09 16:13:34,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:34,643 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-12-09 16:13:34,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 16:13:34,644 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-09 16:13:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:34,650 INFO L225 Difference]: With dead ends: 78 [2018-12-09 16:13:34,650 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 16:13:34,652 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 16:13:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 16:13:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 16:13:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 16:13:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-12-09 16:13:34,674 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-12-09 16:13:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:34,674 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-12-09 16:13:34,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 16:13:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-12-09 16:13:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 16:13:34,674 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:34,675 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:34,675 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:34,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:34,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2018-12-09 16:13:34,675 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:13:34,675 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 16:13:34,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:34,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:13:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:34,808 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:13:34,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:34,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 16:13:34,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 16:13:34,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 16:13:34,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:13:34,816 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2018-12-09 16:13:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:35,699 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-12-09 16:13:35,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 16:13:35,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-12-09 16:13:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:35,702 INFO L225 Difference]: With dead ends: 60 [2018-12-09 16:13:35,702 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 16:13:35,703 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-09 16:13:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 16:13:35,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-12-09 16:13:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 16:13:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-12-09 16:13:35,708 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-12-09 16:13:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:35,708 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-12-09 16:13:35,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 16:13:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-12-09 16:13:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 16:13:35,709 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:35,709 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:35,709 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:35,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:35,710 INFO L82 PathProgramCache]: Analyzing trace with hash -568234905, now seen corresponding path program 1 times [2018-12-09 16:13:35,710 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:13:35,710 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-09 16:13:35,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:35,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:13:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:35,807 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:13:35,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:35,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 16:13:35,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 16:13:35,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 16:13:35,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:13:35,814 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2018-12-09 16:13:36,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:36,618 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-12-09 16:13:36,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 16:13:36,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-12-09 16:13:36,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:36,619 INFO L225 Difference]: With dead ends: 67 [2018-12-09 16:13:36,620 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 16:13:36,620 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-12-09 16:13:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 16:13:36,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-09 16:13:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 16:13:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-12-09 16:13:36,623 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2018-12-09 16:13:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:36,623 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-12-09 16:13:36,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 16:13:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-12-09 16:13:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 16:13:36,624 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:36,624 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:36,624 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:36,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:36,624 INFO L82 PathProgramCache]: Analyzing trace with hash 13684055, now seen corresponding path program 1 times [2018-12-09 16:13:36,624 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:13:36,625 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 16:13:36,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:36,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:13:37,423 WARN L180 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-12-09 16:13:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:37,428 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:13:37,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:37,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 16:13:37,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 16:13:37,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 16:13:37,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-09 16:13:37,439 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2018-12-09 16:13:38,202 WARN L180 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-12-09 16:13:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:38,724 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-12-09 16:13:38,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 16:13:38,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-12-09 16:13:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:38,729 INFO L225 Difference]: With dead ends: 52 [2018-12-09 16:13:38,729 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 16:13:38,729 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:13:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 16:13:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-09 16:13:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 16:13:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-12-09 16:13:38,732 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2018-12-09 16:13:38,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:38,733 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-12-09 16:13:38,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 16:13:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-12-09 16:13:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 16:13:38,733 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:38,733 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:38,733 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:38,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:38,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2137668883, now seen corresponding path program 1 times [2018-12-09 16:13:38,734 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:13:38,734 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-09 16:13:38,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:38,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:13:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:38,815 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:13:38,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:38,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 16:13:38,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 16:13:38,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 16:13:38,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 16:13:38,824 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 7 states. [2018-12-09 16:13:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:38,951 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-12-09 16:13:38,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 16:13:38,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-12-09 16:13:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:38,952 INFO L225 Difference]: With dead ends: 44 [2018-12-09 16:13:38,952 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 16:13:38,953 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:13:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 16:13:38,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 16:13:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 16:13:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-12-09 16:13:38,958 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 24 [2018-12-09 16:13:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:38,958 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-12-09 16:13:38,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 16:13:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-12-09 16:13:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 16:13:38,959 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:38,959 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:38,959 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:38,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:38,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1389654977, now seen corresponding path program 1 times [2018-12-09 16:13:38,959 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:13:38,959 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-09 16:13:38,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:39,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:13:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:39,052 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:13:39,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:39,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 16:13:39,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 16:13:39,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 16:13:39,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 16:13:39,061 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 6 states. [2018-12-09 16:13:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:39,277 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-12-09 16:13:39,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 16:13:39,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 16:13:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:39,278 INFO L225 Difference]: With dead ends: 57 [2018-12-09 16:13:39,278 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 16:13:39,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:13:39,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 16:13:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 16:13:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 16:13:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2018-12-09 16:13:39,281 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 25 [2018-12-09 16:13:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:39,281 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2018-12-09 16:13:39,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 16:13:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2018-12-09 16:13:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 16:13:39,282 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:13:39,282 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:13:39,282 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:13:39,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:13:39,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1598134754, now seen corresponding path program 1 times [2018-12-09 16:13:39,282 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 16:13:39,282 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-09 16:13:39,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:13:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:13:39,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:13:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 16:13:39,468 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 16:13:39,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 16:13:39,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-09 16:13:39,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 16:13:39,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 16:13:39,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-12-09 16:13:39,477 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 12 states. [2018-12-09 16:13:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:13:39,735 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2018-12-09 16:13:39,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 16:13:39,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-12-09 16:13:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:13:39,736 INFO L225 Difference]: With dead ends: 33 [2018-12-09 16:13:39,736 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 16:13:39,736 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-12-09 16:13:39,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 16:13:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 16:13:39,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 16:13:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 16:13:39,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-12-09 16:13:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:13:39,737 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 16:13:39,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 16:13:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 16:13:39,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 16:13:39,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 16:13:39,861 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 16:13:39,861 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 16:13:39,861 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (= |floor_float_#in~x| floor_float_~x)) [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point floor_floatEXIT(lines 13 54) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-12-09 16:13:39,862 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point floor_floatFINAL(lines 13 54) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L451 ceAbstractionStarter]: At program point floor_floatENTRY(lines 13 54) the Hoare annotation is: true [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0) [2018-12-09 16:13:39,863 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 68 85) the Hoare annotation is: true [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 68 85) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-12-09 16:13:39,863 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (= (fp (_ bv0 1) (_ bv0 8) (_ bv0 23)) main_~res~0))) [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 68 85) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (= (_ +zero 8 24) main_~x~0)) [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L444 ceAbstractionStarter]: At program point L59-2(lines 59 63) the Hoare annotation is: (or (= |__signbit_float_#in~x| __signbit_float_~x) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0))) [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 56 66) no Hoare annotation was computed. [2018-12-09 16:13:39,864 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 56 66) the Hoare annotation is: true [2018-12-09 16:13:39,864 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 56 66) no Hoare annotation was computed. [2018-12-09 16:13:39,869 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,870 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,872 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,872 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,873 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,873 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,873 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,874 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:13:39 BoogieIcfgContainer [2018-12-09 16:13:39,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:13:39,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:13:39,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:13:39,875 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:13:39,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:13:34" (3/4) ... [2018-12-09 16:13:39,878 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 16:13:39,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 16:13:39,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure floor_float [2018-12-09 16:13:39,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 16:13:39,882 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-12-09 16:13:39,885 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-12-09 16:13:39,886 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 16:13:39,886 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 16:13:39,903 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) || \old(x) == x [2018-12-09 16:13:39,903 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) [2018-12-09 16:13:39,920 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bbf707d7-30f3-4893-a19f-28c6a7e1daca/bin-2019/utaipan/witness.graphml [2018-12-09 16:13:39,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:13:39,921 INFO L168 Benchmark]: Toolchain (without parser) took 6099.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 943.4 MB in the beginning and 836.3 MB in the end (delta: 107.1 MB). Peak memory consumption was 235.0 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:39,922 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:13:39,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.43 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 931.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:39,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.18 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:39,923 INFO L168 Benchmark]: Boogie Preprocessor took 20.76 ms. Allocated memory is still 1.0 GB. Free memory is still 925.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:13:39,923 INFO L168 Benchmark]: RCFGBuilder took 462.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:39,923 INFO L168 Benchmark]: TraceAbstraction took 5380.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 843.1 MB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:39,924 INFO L168 Benchmark]: Witness Printer took 45.49 ms. Allocated memory is still 1.2 GB. Free memory was 843.1 MB in the beginning and 836.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 16:13:39,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.43 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 931.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.18 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.76 ms. Allocated memory is still 1.0 GB. Free memory is still 925.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 462.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5380.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 843.1 MB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 11.5 GB. * Witness Printer took 45.49 ms. Allocated memory is still 1.2 GB. Free memory was 843.1 MB in the beginning and 836.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2018-12-09 16:13:39,929 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,929 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,929 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,929 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) - InvariantResult [Line: 16]: Loop Invariant [2018-12-09 16:13:39,930 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,930 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,930 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-12-09 16:13:39,930 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) || \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 229 SDtfs, 226 SDslu, 728 SDs, 0 SdLazy, 330 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 20 PreInvPairs, 23 NumberOfFragments, 68 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 154 ConstructedInterpolants, 17 QuantifiedInterpolants, 19826 SizeOfPredicates, 25 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...