./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/nan_float.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --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/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/nan_float.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --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 0.1.24-30f4e4a [2019-11-27 23:37:07,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:37:07,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:37:07,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:37:07,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:37:07,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:37:07,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:37:07,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:37:07,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:37:07,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:37:07,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:37:07,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:37:07,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:37:07,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:37:07,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:37:07,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:37:07,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:37:07,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:37:07,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:37:07,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:37:07,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:37:07,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:37:07,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:37:07,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:37:07,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:37:07,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:37:07,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:37:07,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:37:07,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:37:07,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:37:07,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:37:07,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:37:07,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:37:07,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:37:07,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:37:07,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:37:07,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:37:07,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:37:07,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:37:07,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:37:07,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:37:07,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:37:07,561 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:37:07,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:37:07,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:37:07,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:37:07,564 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:37:07,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:37:07,564 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:37:07,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:37:07,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:37:07,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:37:07,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:37:07,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:37:07,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:37:07,566 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:37:07,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:37:07,567 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:37:07,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:37:07,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:37:07,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:37:07,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:37:07,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:37:07,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:37:07,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:37:07,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:37:07,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:37:07,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:37:07,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:37:07,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:37:07,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 [2019-11-27 23:37:07,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:37:07,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:37:07,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:37:07,952 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:37:07,952 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:37:07,953 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2019-11-27 23:37:08,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb23f2c61/7fb0e1a8a9c840f785e3f9e4446cb7fd/FLAGc5fdc2e2b [2019-11-27 23:37:08,508 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:37:08,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2019-11-27 23:37:08,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb23f2c61/7fb0e1a8a9c840f785e3f9e4446cb7fd/FLAGc5fdc2e2b [2019-11-27 23:37:08,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb23f2c61/7fb0e1a8a9c840f785e3f9e4446cb7fd [2019-11-27 23:37:08,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:37:08,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:37:08,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:37:08,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:37:08,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:37:08,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:37:08" (1/1) ... [2019-11-27 23:37:08,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af9092c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:08, skipping insertion in model container [2019-11-27 23:37:08,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:37:08" (1/1) ... [2019-11-27 23:37:08,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:37:08,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:37:09,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:37:09,131 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:37:09,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:37:09,160 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:37:09,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09 WrapperNode [2019-11-27 23:37:09,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:37:09,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:37:09,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:37:09,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:37:09,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:37:09,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:37:09,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:37:09,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:37:09,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... [2019-11-27 23:37:09,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:37:09,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:37:09,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:37:09,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:37:09,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-27 23:37:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:37:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:37:09,491 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:37:09,491 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:37:09,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:09 BoogieIcfgContainer [2019-11-27 23:37:09,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:37:09,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:37:09,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:37:09,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:37:09,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:37:08" (1/3) ... [2019-11-27 23:37:09,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16247d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:09, skipping insertion in model container [2019-11-27 23:37:09,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:09" (2/3) ... [2019-11-27 23:37:09,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16247d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:09, skipping insertion in model container [2019-11-27 23:37:09,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:09" (3/3) ... [2019-11-27 23:37:09,501 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-11-27 23:37:09,510 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:37:09,517 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:37:09,530 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:37:09,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:37:09,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:37:09,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:37:09,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:37:09,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:37:09,553 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:37:09,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:37:09,554 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:37:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-27 23:37:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-27 23:37:09,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:37:09,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-27 23:37:09,578 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:37:09,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:37:09,584 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-27 23:37:09,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:37:09,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508284087] [2019-11-27 23:37:09,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:37:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:37:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:37:09,697 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:37:09,697 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:37:09,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:37:09 BoogieIcfgContainer [2019-11-27 23:37:09,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:37:09,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:37:09,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:37:09,715 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:37:09,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:09" (3/4) ... [2019-11-27 23:37:09,719 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:37:09,719 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:37:09,723 INFO L168 Benchmark]: Toolchain (without parser) took 799.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -119.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:09,723 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:09,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 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. [2019-11-27 23:37:09,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -156.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:09,726 INFO L168 Benchmark]: Boogie Preprocessor took 17.39 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. [2019-11-27 23:37:09,727 INFO L168 Benchmark]: RCFGBuilder took 216.43 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: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:09,728 INFO L168 Benchmark]: TraceAbstraction took 220.46 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:09,729 INFO L168 Benchmark]: Witness Printer took 4.79 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. [2019-11-27 23:37:09,741 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 237.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 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 96.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -156.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.39 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 216.43 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: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 220.46 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.79 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 0.1.24-30f4e4a [2019-11-27 23:37:11,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:37:11,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:37:11,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:37:11,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:37:11,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:37:11,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:37:11,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:37:11,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:37:11,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:37:11,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:37:11,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:37:11,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:37:11,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:37:11,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:37:11,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:37:11,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:37:11,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:37:11,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:37:11,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:37:11,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:37:11,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:37:11,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:37:11,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:37:11,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:37:11,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:37:11,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:37:11,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:37:11,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:37:11,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:37:11,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:37:11,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:37:11,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:37:11,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:37:11,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:37:11,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:37:11,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:37:11,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:37:11,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:37:11,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:37:11,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:37:11,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:37:11,833 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:37:11,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:37:11,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:37:11,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:37:11,840 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:37:11,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:37:11,840 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:37:11,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:37:11,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:37:11,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:37:11,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:37:11,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:37:11,843 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:37:11,843 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:37:11,844 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:37:11,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:37:11,844 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:37:11,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:37:11,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:37:11,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:37:11,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:37:11,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:37:11,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:37:11,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:37:11,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:37:11,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:37:11,847 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:37:11,847 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:37:11,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:37:11,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:37:11,848 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 [2019-11-27 23:37:12,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:37:12,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:37:12,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:37:12,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:37:12,157 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:37:12,158 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2019-11-27 23:37:12,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4a48ec8/eea8d4ac78ca437f97597c70a0a0210c/FLAGe0e309bfe [2019-11-27 23:37:12,690 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:37:12,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2019-11-27 23:37:12,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4a48ec8/eea8d4ac78ca437f97597c70a0a0210c/FLAGe0e309bfe [2019-11-27 23:37:13,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4a48ec8/eea8d4ac78ca437f97597c70a0a0210c [2019-11-27 23:37:13,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:37:13,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:37:13,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:37:13,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:37:13,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:37:13,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0b093e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13, skipping insertion in model container [2019-11-27 23:37:13,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:37:13,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:37:13,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:37:13,312 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:37:13,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:37:13,346 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:37:13,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13 WrapperNode [2019-11-27 23:37:13,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:37:13,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:37:13,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:37:13,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:37:13,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:37:13,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:37:13,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:37:13,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:37:13,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... [2019-11-27 23:37:13,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:37:13,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:37:13,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:37:13,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:37:13,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-27 23:37:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:37:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:37:13,654 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:37:13,654 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-27 23:37:13,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:13 BoogieIcfgContainer [2019-11-27 23:37:13,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:37:13,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:37:13,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:37:13,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:37:13,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:37:13" (1/3) ... [2019-11-27 23:37:13,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1538bc95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:13, skipping insertion in model container [2019-11-27 23:37:13,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:37:13" (2/3) ... [2019-11-27 23:37:13,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1538bc95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:13, skipping insertion in model container [2019-11-27 23:37:13,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:13" (3/3) ... [2019-11-27 23:37:13,662 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-11-27 23:37:13,669 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:37:13,675 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:37:13,687 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:37:13,715 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:37:13,715 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:37:13,715 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:37:13,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:37:13,715 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:37:13,716 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:37:13,716 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:37:13,716 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:37:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-27 23:37:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:37:13,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:37:13,737 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:37:13,737 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:37:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:37:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-27 23:37:13,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:37:13,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471308915] [2019-11-27 23:37:13,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-27 23:37:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:37:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:37:13,834 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:37:13,834 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:37:14,048 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:37:14,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:37:14 BoogieIcfgContainer [2019-11-27 23:37:14,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:37:14,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:37:14,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:37:14,067 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:37:14,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:13" (3/4) ... [2019-11-27 23:37:14,070 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:37:14,106 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:37:14,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:37:14,109 INFO L168 Benchmark]: Toolchain (without parser) took 1031.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:14,110 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:14,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.80 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:14,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:14,114 INFO L168 Benchmark]: Boogie Preprocessor took 19.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:14,117 INFO L168 Benchmark]: RCFGBuilder took 200.27 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:14,119 INFO L168 Benchmark]: TraceAbstraction took 410.77 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:37:14,121 INFO L168 Benchmark]: Witness Printer took 38.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:37:14,128 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.80 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 87.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -190.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.27 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 410.77 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 38.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 9 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=9occurred 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, 4 NumberOfCodeBlocks, 4 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...