./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/nan_float.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/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 2b1f703b8c1a340e028de77080ca419d81a34cd6 ............................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/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 2b1f703b8c1a340e028de77080ca419d81a34cd6 ................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:47,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:47,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:47,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:47,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:47,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:47,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:47,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:47,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:47,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:47,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:47,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:47,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:47,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:47,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:47,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:47,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:47,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:47,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:47,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:47,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:47,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:47,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:47,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:47,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:47,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:47,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:47,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:47,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:47,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:47,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:47,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:47,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:47,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:47,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:47,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:47,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:47,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:47,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:47,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:47,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:47,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:47,778 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:47,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:47,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:47,779 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:47,779 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:47,779 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:47,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:47,779 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:47,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:47,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:47,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:47,780 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:47,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:47,781 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:47,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:47,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:47,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:47,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:47,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:47,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:47,782 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:47,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:47,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:47,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:47,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:47,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:47,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:47,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:47,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:47,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:47,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:47,784 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:47,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:47,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:47,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:47,785 INFO L138 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_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/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 -> 2b1f703b8c1a340e028de77080ca419d81a34cd6 [2019-10-22 11:25:47,811 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:47,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:47,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:47,830 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:47,831 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:47,831 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/../../sv-benchmarks/c/float-benchs/nan_float.c [2019-10-22 11:25:47,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/538287ddd/9df9fb34f9ff4b7aa7a338ece5d960d9/FLAG8f8ee7cdf [2019-10-22 11:25:48,270 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:48,271 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/sv-benchmarks/c/float-benchs/nan_float.c [2019-10-22 11:25:48,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/538287ddd/9df9fb34f9ff4b7aa7a338ece5d960d9/FLAG8f8ee7cdf [2019-10-22 11:25:48,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/538287ddd/9df9fb34f9ff4b7aa7a338ece5d960d9 [2019-10-22 11:25:48,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:48,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:48,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:48,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:48,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:48,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:48,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645ba905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48, skipping insertion in model container [2019-10-22 11:25:48,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:48,680 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:48,697 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:48,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:48,885 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:48,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:48,969 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:48,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48 WrapperNode [2019-10-22 11:25:48,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:48,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:48,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:48,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:48,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:48,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:48,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:48,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:48,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:48,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:49,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:49,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:49,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:49,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:49,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:49,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:49,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... [2019-10-22 11:25:49,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:49,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:49,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:49,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:49,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/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 [2019-10-22 11:25:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:49,161 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:49,161 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:25:49,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:49 BoogieIcfgContainer [2019-10-22 11:25:49,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:49,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:49,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:49,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:49,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:48" (1/3) ... [2019-10-22 11:25:49,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54db963b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:49, skipping insertion in model container [2019-10-22 11:25:49,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:48" (2/3) ... [2019-10-22 11:25:49,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54db963b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:49, skipping insertion in model container [2019-10-22 11:25:49,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:49" (3/3) ... [2019-10-22 11:25:49,170 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-10-22 11:25:49,180 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:49,188 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:49,199 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:49,218 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:49,219 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:49,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:49,220 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:49,220 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:49,220 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:49,220 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:49,220 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-10-22 11:25:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:25:49,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:49,236 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:25:49,238 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:49,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-10-22 11:25:49,251 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:49,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925516015] [2019-10-22 11:25:49,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:49,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:49,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:49,345 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:25:49,345 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:25:49,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:49 BoogieIcfgContainer [2019-10-22 11:25:49,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:49,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:49,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:49,359 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:49,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:49" (3/4) ... [2019-10-22 11:25:49,362 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:25:49,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:49,365 INFO L168 Benchmark]: Toolchain (without parser) took 701.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -139.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:49,365 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:49,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:49,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:49,367 INFO L168 Benchmark]: Boogie Preprocessor took 14.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:49,368 INFO L168 Benchmark]: RCFGBuilder took 151.26 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:49,369 INFO L168 Benchmark]: TraceAbstraction took 194.58 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: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:49,369 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:49,373 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 151.26 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: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 194.58 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: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.29 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13. Possible FailurePath: [L10] float x; [L11] x = __VERIFIER_nondet_float() [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:51,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:51,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:51,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:51,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:51,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:51,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:51,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:51,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:51,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:51,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:51,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:51,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:51,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:51,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:51,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:51,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:51,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:51,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:51,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:51,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:51,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:51,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:51,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:51,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:51,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:51,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:51,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:51,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:51,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:51,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:51,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:51,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:51,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:51,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:51,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:51,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:51,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:51,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:51,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:51,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:51,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:51,417 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:51,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:51,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:51,418 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:51,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:51,418 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:51,419 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:51,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:51,419 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:51,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:51,420 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:51,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:51,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:51,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:51,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:51,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:51,420 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:51,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:51,421 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:51,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:51,421 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:51,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:51,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:51,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:51,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:51,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:51,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:51,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:51,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:51,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:51,423 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:51,423 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:51,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:51,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:51,424 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/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 -> 2b1f703b8c1a340e028de77080ca419d81a34cd6 [2019-10-22 11:25:51,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:51,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:51,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:51,463 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:51,463 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:51,464 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/../../sv-benchmarks/c/float-benchs/nan_float.c [2019-10-22 11:25:51,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/39d690a20/7b21c4d13bcd4ba49258d4ac666a940c/FLAG180ec76a9 [2019-10-22 11:25:51,884 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:51,884 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/sv-benchmarks/c/float-benchs/nan_float.c [2019-10-22 11:25:51,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/39d690a20/7b21c4d13bcd4ba49258d4ac666a940c/FLAG180ec76a9 [2019-10-22 11:25:51,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/data/39d690a20/7b21c4d13bcd4ba49258d4ac666a940c [2019-10-22 11:25:51,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:51,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:51,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:51,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:51,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:51,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:51" (1/1) ... [2019-10-22 11:25:51,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641838aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:51, skipping insertion in model container [2019-10-22 11:25:51,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:51" (1/1) ... [2019-10-22 11:25:51,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:51,933 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:52,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:52,085 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:52,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:52,112 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:52,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52 WrapperNode [2019-10-22 11:25:52,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:52,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:52,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:52,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:52,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:52,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:52,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:52,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:52,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... [2019-10-22 11:25:52,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:52,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:52,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:52,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:52,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/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 [2019-10-22 11:25:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:52,418 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:52,418 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:25:52,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:52 BoogieIcfgContainer [2019-10-22 11:25:52,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:52,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:52,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:52,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:52,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:51" (1/3) ... [2019-10-22 11:25:52,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebfd40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:52, skipping insertion in model container [2019-10-22 11:25:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:52" (2/3) ... [2019-10-22 11:25:52,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebfd40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:52, skipping insertion in model container [2019-10-22 11:25:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:52" (3/3) ... [2019-10-22 11:25:52,428 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-10-22 11:25:52,441 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:52,447 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:52,457 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:52,477 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:52,477 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:52,477 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:52,478 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:52,478 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:52,478 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:52,478 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:52,478 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:52,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-10-22 11:25:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 11:25:52,496 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:52,497 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-10-22 11:25:52,499 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:52,504 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-10-22 11:25:52,514 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:52,514 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390301861] [2019-10-22 11:25:52,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/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 [2019-10-22 11:25:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:52,581 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:25:52,582 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:25:52,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:25:52,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:52 BoogieIcfgContainer [2019-10-22 11:25:52,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:52,799 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:52,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:52,799 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:52,800 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:52" (3/4) ... [2019-10-22 11:25:52,802 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:25:52,832 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0d8ffaa6-1868-4878-9173-c55664fbf8ad/bin/utaipan/witness.graphml [2019-10-22 11:25:52,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:52,834 INFO L168 Benchmark]: Toolchain (without parser) took 927.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:52,834 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:52,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,836 INFO L168 Benchmark]: Boogie Preprocessor took 20.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:52,836 INFO L168 Benchmark]: RCFGBuilder took 195.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,837 INFO L168 Benchmark]: TraceAbstraction took 378.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,837 INFO L168 Benchmark]: Witness Printer took 33.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,843 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.96 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 88.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 195.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 378.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Witness Printer took 33.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] float x; [L11] x = __VERIFIER_nondet_float() [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...