./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_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_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 ................................................................................................................................................................................................................................................................................................................. 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_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 00:54:29,687 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 00:54:29,688 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 00:54:29,694 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 00:54:29,694 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 00:54:29,695 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 00:54:29,695 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 00:54:29,696 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 00:54:29,697 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 00:54:29,697 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 00:54:29,698 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 00:54:29,698 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 00:54:29,698 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 00:54:29,699 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 00:54:29,699 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 00:54:29,700 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 00:54:29,700 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 00:54:29,701 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 00:54:29,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 00:54:29,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 00:54:29,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 00:54:29,703 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 00:54:29,705 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 00:54:29,705 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 00:54:29,705 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 00:54:29,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 00:54:29,706 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 00:54:29,706 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 00:54:29,707 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 00:54:29,707 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 00:54:29,707 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 00:54:29,708 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 00:54:29,708 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 00:54:29,708 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 00:54:29,708 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 00:54:29,709 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 00:54:29,709 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 00:54:29,716 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 00:54:29,716 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 00:54:29,717 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 00:54:29,717 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 00:54:29,717 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 00:54:29,718 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 00:54:29,718 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 00:54:29,719 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 00:54:29,719 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 00:54:29,719 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 00:54:29,720 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_90b1abe4-041a-4167-a443-2742696017a5/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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-12-02 00:54:29,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 00:54:29,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 00:54:29,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 00:54:29,746 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 00:54:29,746 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 00:54:29,746 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-12-02 00:54:29,784 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/8acc9e74e/2829d6ada8e748e9b62d93f073429d23/FLAGf0aa2d455 [2018-12-02 00:54:30,209 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 00:54:30,209 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-12-02 00:54:30,213 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/8acc9e74e/2829d6ada8e748e9b62d93f073429d23/FLAGf0aa2d455 [2018-12-02 00:54:30,221 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/8acc9e74e/2829d6ada8e748e9b62d93f073429d23 [2018-12-02 00:54:30,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 00:54:30,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 00:54:30,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 00:54:30,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 00:54:30,226 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 00:54:30,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7faede09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30, skipping insertion in model container [2018-12-02 00:54:30,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 00:54:30,246 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 00:54:30,343 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:54:30,345 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 00:54:30,358 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:54:30,370 INFO L195 MainTranslator]: Completed translation [2018-12-02 00:54:30,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30 WrapperNode [2018-12-02 00:54:30,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 00:54:30,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 00:54:30,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 00:54:30,371 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 00:54:30,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 00:54:30,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 00:54:30,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 00:54:30,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 00:54:30,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... [2018-12-02 00:54:30,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 00:54:30,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 00:54:30,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 00:54:30,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 00:54:30,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-02 00:54:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 00:54:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-12-02 00:54:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-12-02 00:54:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 00:54:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 00:54:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 00:54:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 00:54:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 00:54:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 00:54:30,591 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 00:54:30,591 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 00:54:30,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:30 BoogieIcfgContainer [2018-12-02 00:54:30,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 00:54:30,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 00:54:30,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 00:54:30,594 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 00:54:30,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:54:30" (1/3) ... [2018-12-02 00:54:30,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eed7e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:54:30, skipping insertion in model container [2018-12-02 00:54:30,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:30" (2/3) ... [2018-12-02 00:54:30,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eed7e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:54:30, skipping insertion in model container [2018-12-02 00:54:30,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:30" (3/3) ... [2018-12-02 00:54:30,596 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-12-02 00:54:30,603 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 00:54:30,608 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 00:54:30,617 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 00:54:30,636 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 00:54:30,636 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 00:54:30,636 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 00:54:30,636 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 00:54:30,636 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 00:54:30,636 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 00:54:30,636 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 00:54:30,636 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 00:54:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-12-02 00:54:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 00:54:30,650 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:54:30,651 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] [2018-12-02 00:54:30,652 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:54:30,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:54:30,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1659352855, now seen corresponding path program 1 times [2018-12-02 00:54:30,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 00:54:30,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:54:30,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:54:30,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:54:30,687 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 00:54:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:54:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:54:30,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:54:30,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 00:54:30,736 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 00:54:30,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 00:54:30,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 00:54:30,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 00:54:30,749 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2018-12-02 00:54:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:54:30,763 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2018-12-02 00:54:30,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 00:54:30,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-02 00:54:30,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:54:30,771 INFO L225 Difference]: With dead ends: 60 [2018-12-02 00:54:30,771 INFO L226 Difference]: Without dead ends: 30 [2018-12-02 00:54:30,774 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 [2018-12-02 00:54:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-02 00:54:30,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-02 00:54:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-02 00:54:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-12-02 00:54:30,798 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2018-12-02 00:54:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:54:30,799 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-12-02 00:54:30,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 00:54:30,799 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-12-02 00:54:30,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 00:54:30,799 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:54:30,799 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] [2018-12-02 00:54:30,800 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:54:30,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:54:30,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1719916348, now seen corresponding path program 1 times [2018-12-02 00:54:30,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 00:54:30,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:54:30,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:54:30,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 00:54:30,801 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 00:54:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:54:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 00:54:30,875 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 00:54:30,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:54:30 BoogieIcfgContainer [2018-12-02 00:54:30,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 00:54:30,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 00:54:30,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 00:54:30,894 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 00:54:30,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:30" (3/4) ... [2018-12-02 00:54:30,898 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 00:54:30,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 00:54:30,898 INFO L168 Benchmark]: Toolchain (without parser) took 675.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.7 MB). Free memory was 952.4 MB in the beginning and 1.0 GB in the end (delta: -73.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:30,899 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-02 00:54:30,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.51 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:30,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.24 ms. Allocated memory is still 1.0 GB. Free memory was 941.6 MB in the beginning and 936.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:30,900 INFO L168 Benchmark]: Boogie Preprocessor took 52.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.7 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -138.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:30,901 INFO L168 Benchmark]: RCFGBuilder took 153.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:30,901 INFO L168 Benchmark]: TraceAbstraction took 301.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:30,902 INFO L168 Benchmark]: Witness Printer took 4.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:54:30,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.51 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.24 ms. Allocated memory is still 1.0 GB. Free memory was 941.6 MB in the beginning and 936.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.7 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -138.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 153.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 301.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 55, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L65] float x = 0.0f / 0.0f; [L66] CALL, EXPR round_float(x) VAL [\old(x)=11] [L12] __uint32_t w; [L14] int exponent_less_127; VAL [\old(x)=11, x=11] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=11, exponent_less_127=128, w=8, x=11] [L24] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=11, exponent_less_127=128, w=8, x=11] [L40] COND TRUE exponent_less_127 == 128 [L42] return x + x; VAL [\old(x)=11, exponent_less_127=128, w=8, x=11] [L66] RET, EXPR round_float(x) VAL [round_float(x)=10, x=11] [L66] float res = round_float(x); [L69] CALL, EXPR isnan_float(res) VAL [\old(x)=10] [L55] return x != x; VAL [\old(x)=10, \result=0, x=10] [L69] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=10, x=11] [L69] COND TRUE !isnan_float(res) [L70] __VERIFIER_error() VAL [res=10, x=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 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=34occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 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 [2018-12-02 00:54:32,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 00:54:32,234 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 00:54:32,241 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 00:54:32,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 00:54:32,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 00:54:32,243 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 00:54:32,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 00:54:32,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 00:54:32,245 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 00:54:32,246 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 00:54:32,246 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 00:54:32,247 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 00:54:32,247 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 00:54:32,248 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 00:54:32,249 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 00:54:32,249 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 00:54:32,250 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 00:54:32,252 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 00:54:32,253 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 00:54:32,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 00:54:32,254 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 00:54:32,256 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 00:54:32,256 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 00:54:32,256 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 00:54:32,257 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 00:54:32,257 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 00:54:32,258 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 00:54:32,259 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 00:54:32,259 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 00:54:32,259 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 00:54:32,260 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 00:54:32,260 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 00:54:32,260 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 00:54:32,261 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 00:54:32,261 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 00:54:32,261 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 00:54:32,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 00:54:32,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 00:54:32,272 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 00:54:32,273 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 00:54:32,273 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 00:54:32,273 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 00:54:32,273 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 00:54:32,273 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 00:54:32,273 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 00:54:32,273 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 00:54:32,274 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 00:54:32,274 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 00:54:32,274 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 00:54:32,274 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 00:54:32,274 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 00:54:32,274 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 00:54:32,274 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 00:54:32,275 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 00:54:32,275 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 00:54:32,275 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 00:54:32,275 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 00:54:32,275 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 00:54:32,275 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 00:54:32,275 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 00:54:32,276 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 00:54:32,276 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 00:54:32,276 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 00:54:32,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 00:54:32,276 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 00:54:32,276 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 00:54:32,276 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 00:54:32,276 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 00:54:32,277 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 00:54:32,277 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 00:54:32,277 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 00:54:32,277 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_90b1abe4-041a-4167-a443-2742696017a5/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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-12-02 00:54:32,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 00:54:32,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 00:54:32,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 00:54:32,308 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 00:54:32,309 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 00:54:32,309 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-12-02 00:54:32,348 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/09cf44c3e/92fd2a99562a433ba97fc185095e1ab7/FLAG49f915ea6 [2018-12-02 00:54:32,732 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 00:54:32,732 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/sv-benchmarks/c/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-12-02 00:54:32,736 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/09cf44c3e/92fd2a99562a433ba97fc185095e1ab7/FLAG49f915ea6 [2018-12-02 00:54:32,744 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/data/09cf44c3e/92fd2a99562a433ba97fc185095e1ab7 [2018-12-02 00:54:32,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 00:54:32,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 00:54:32,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 00:54:32,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 00:54:32,749 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 00:54:32,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b7a218c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32, skipping insertion in model container [2018-12-02 00:54:32,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 00:54:32,765 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 00:54:32,858 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:54:32,861 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 00:54:32,876 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 00:54:32,889 INFO L195 MainTranslator]: Completed translation [2018-12-02 00:54:32,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32 WrapperNode [2018-12-02 00:54:32,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 00:54:32,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 00:54:32,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 00:54:32,891 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 00:54:32,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 00:54:32,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 00:54:32,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 00:54:32,906 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 00:54:32,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... [2018-12-02 00:54:32,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 00:54:32,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 00:54:32,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 00:54:32,927 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 00:54:32,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 [2018-12-02 00:54:32,994 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-12-02 00:54:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-12-02 00:54:32,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 00:54:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 00:54:32,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 00:54:32,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 00:54:32,994 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-12-02 00:54:32,994 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-12-02 00:54:32,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 00:54:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 00:54:32,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-02 00:54:32,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 00:54:32,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 00:54:32,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-02 00:54:32,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 00:54:32,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 00:54:33,103 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 00:54:33,150 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 00:54:33,151 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 00:54:33,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:33 BoogieIcfgContainer [2018-12-02 00:54:33,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 00:54:33,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 00:54:33,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 00:54:33,153 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 00:54:33,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:54:32" (1/3) ... [2018-12-02 00:54:33,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:54:33, skipping insertion in model container [2018-12-02 00:54:33,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:54:32" (2/3) ... [2018-12-02 00:54:33,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e80dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:54:33, skipping insertion in model container [2018-12-02 00:54:33,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:33" (3/3) ... [2018-12-02 00:54:33,155 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-12-02 00:54:33,160 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 00:54:33,164 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 00:54:33,173 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 00:54:33,191 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 00:54:33,191 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 00:54:33,191 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 00:54:33,191 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 00:54:33,191 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 00:54:33,191 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 00:54:33,191 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 00:54:33,192 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 00:54:33,192 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 00:54:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-02 00:54:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 00:54:33,204 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:54:33,205 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] [2018-12-02 00:54:33,206 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:54:33,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:54:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash -20782665, now seen corresponding path program 1 times [2018-12-02 00:54:33,212 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 00:54:33,212 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 [2018-12-02 00:54:33,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:54:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:54:33,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:54:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:54:33,279 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 00:54:33,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:54:33,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 00:54:33,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 00:54:33,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 00:54:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 00:54:33,299 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-12-02 00:54:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:54:33,310 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2018-12-02 00:54:33,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 00:54:33,311 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 00:54:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:54:33,317 INFO L225 Difference]: With dead ends: 58 [2018-12-02 00:54:33,317 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 00:54:33,319 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 00:54:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 00:54:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-02 00:54:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 00:54:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-12-02 00:54:33,341 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2018-12-02 00:54:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:54:33,342 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-12-02 00:54:33,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 00:54:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-12-02 00:54:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 00:54:33,342 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:54:33,342 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] [2018-12-02 00:54:33,342 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:54:33,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:54:33,343 INFO L82 PathProgramCache]: Analyzing trace with hash -928055160, now seen corresponding path program 1 times [2018-12-02 00:54:33,343 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 00:54:33,343 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 [2018-12-02 00:54:33,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:54:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:54:33,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:54:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:54:33,840 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 00:54:33,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:54:33,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 00:54:33,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 00:54:33,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 00:54:33,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-02 00:54:33,849 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 9 states. [2018-12-02 00:54:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:54:34,562 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-12-02 00:54:34,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:54:34,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-12-02 00:54:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:54:34,564 INFO L225 Difference]: With dead ends: 38 [2018-12-02 00:54:34,565 INFO L226 Difference]: Without dead ends: 31 [2018-12-02 00:54:34,565 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-02 00:54:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-12-02 00:54:34,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-12-02 00:54:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 00:54:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-12-02 00:54:34,571 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2018-12-02 00:54:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:54:34,571 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-12-02 00:54:34,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 00:54:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-12-02 00:54:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 00:54:34,571 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:54:34,572 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] [2018-12-02 00:54:34,572 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:54:34,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:54:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1124568665, now seen corresponding path program 1 times [2018-12-02 00:54:34,572 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 00:54:34,572 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 [2018-12-02 00:54:34,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:54:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:54:34,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:54:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:54:34,706 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 00:54:34,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:54:34,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-02 00:54:34,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 00:54:34,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 00:54:34,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-02 00:54:34,714 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2018-12-02 00:54:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:54:34,895 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-12-02 00:54:34,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:54:34,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-12-02 00:54:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:54:34,896 INFO L225 Difference]: With dead ends: 36 [2018-12-02 00:54:34,897 INFO L226 Difference]: Without dead ends: 28 [2018-12-02 00:54:34,897 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-02 00:54:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-02 00:54:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-02 00:54:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-02 00:54:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-12-02 00:54:34,900 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2018-12-02 00:54:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:54:34,900 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-12-02 00:54:34,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 00:54:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-12-02 00:54:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 00:54:34,900 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 00:54:34,900 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 00:54:34,901 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 00:54:34,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 00:54:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1803590160, now seen corresponding path program 1 times [2018-12-02 00:54:34,901 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 00:54:34,901 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/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 [2018-12-02 00:54:34,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 00:54:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 00:54:34,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 00:54:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 00:54:35,016 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 00:54:35,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 00:54:35,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 00:54:35,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 00:54:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 00:54:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 00:54:35,025 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2018-12-02 00:54:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 00:54:35,249 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-12-02 00:54:35,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 00:54:35,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-12-02 00:54:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 00:54:35,250 INFO L225 Difference]: With dead ends: 28 [2018-12-02 00:54:35,250 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 00:54:35,250 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-02 00:54:35,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 00:54:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 00:54:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 00:54:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 00:54:35,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-12-02 00:54:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 00:54:35,251 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 00:54:35,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 00:54:35,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 00:54:35,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 00:54:35,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 00:54:35,319 INFO L448 ceAbstractionStarter]: For program point isnan_floatFINAL(line 55) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L451 ceAbstractionStarter]: At program point isnan_floatENTRY(line 55) the Hoare annotation is: true [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point isnan_floatEXIT(line 55) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L451 ceAbstractionStarter]: At program point round_floatENTRY(lines 11 52) the Hoare annotation is: true [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 38) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point L46-1(lines 11 52) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point L46-2(lines 46 50) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point round_floatFINAL(lines 11 52) no Hoare annotation was computed. [2018-12-02 00:54:35,320 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 34) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point round_floatEXIT(lines 11 52) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 45) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 00:54:35,321 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 57 75) the Hoare annotation is: true [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 57 75) no Hoare annotation was computed. [2018-12-02 00:54:35,321 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-12-02 00:54:35,322 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 57 75) no Hoare annotation was computed. [2018-12-02 00:54:35,322 INFO L448 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-12-02 00:54:35,322 INFO L444 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 (fp.add roundNearestTiesToEven .cse0 .cse0)) (= main_~x~0 .cse0))) [2018-12-02 00:54:35,322 INFO L448 ceAbstractionStarter]: For program point L69-1(lines 69 72) no Hoare annotation was computed. [2018-12-02 00:54:35,322 INFO L444 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (= main_~x~0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2018-12-02 00:54:35,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:54:35 BoogieIcfgContainer [2018-12-02 00:54:35,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 00:54:35,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 00:54:35,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 00:54:35,330 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 00:54:35,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:54:33" (3/4) ... [2018-12-02 00:54:35,333 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 00:54:35,337 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-12-02 00:54:35,337 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 00:54:35,337 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-12-02 00:54:35,337 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 00:54:35,340 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-12-02 00:54:35,340 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-02 00:54:35,340 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 00:54:35,357 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-12-02 00:54:35,368 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_90b1abe4-041a-4167-a443-2742696017a5/bin-2019/utaipan/witness.graphml [2018-12-02 00:54:35,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 00:54:35,369 INFO L168 Benchmark]: Toolchain (without parser) took 2622.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.7 MB in the beginning and 951.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 129.9 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:35,369 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. [2018-12-02 00:54:35,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.62 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:35,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.44 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:35,370 INFO L168 Benchmark]: Boogie Preprocessor took 20.38 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:54:35,371 INFO L168 Benchmark]: RCFGBuilder took 224.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:35,371 INFO L168 Benchmark]: TraceAbstraction took 2178.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.1 MB in the end (delta: 155.0 MB). Peak memory consumption was 155.0 MB. Max. memory is 11.5 GB. [2018-12-02 00:54:35,371 INFO L168 Benchmark]: Witness Printer took 38.14 ms. Allocated memory is still 1.2 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 00:54:35,373 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 143.62 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.44 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.38 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 224.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2178.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 951.1 MB in the end (delta: 155.0 MB). Peak memory consumption was 155.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.14 ms. Allocated memory is still 1.2 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 16]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 46 SDslu, 362 SDs, 0 SdLazy, 146 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 34 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 87 ConstructedInterpolants, 8 QuantifiedInterpolants, 9390 SizeOfPredicates, 12 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...