./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer --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/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_float.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer --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 0.1.24-678e011 [2019-11-20 08:55:43,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:55:43,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:55:43,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:55:43,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:55:43,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:55:43,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:55:43,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:55:43,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:55:43,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:55:43,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:55:43,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:55:43,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:55:43,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:55:43,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:55:43,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:55:43,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:55:43,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:55:43,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:55:43,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:55:43,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:55:43,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:55:43,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:55:43,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:55:43,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:55:43,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:55:43,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:55:43,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:55:43,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:55:43,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:55:43,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:55:43,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:55:43,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:55:43,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:55:43,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:55:43,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:55:43,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:55:43,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:55:43,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:55:43,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:55:43,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:55:43,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 08:55:43,435 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:55:43,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:55:43,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:55:43,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:55:43,448 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:55:43,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:55:43,449 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:55:43,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 08:55:43,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:55:43,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:55:43,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 08:55:43,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:55:43,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 08:55:43,450 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:55:43,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 08:55:43,451 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:55:43,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 08:55:43,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:55:43,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:55:43,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:55:43,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:55:43,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:55:43,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:55:43,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:55:43,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 08:55:43,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 08:55:43,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 08:55:43,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 08:55:43,456 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer 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 [2019-11-20 08:55:43,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:55:43,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:55:43,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:55:43,637 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:55:43,637 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:55:43,638 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/../../sv-benchmarks/c/float-benchs/nan_float.c [2019-11-20 08:55:43,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/de2140fcf/4733c2f1a53e4b0998fee3cff8b56479/FLAG90a6f6376 [2019-11-20 08:55:44,086 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:55:44,086 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/sv-benchmarks/c/float-benchs/nan_float.c [2019-11-20 08:55:44,092 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/de2140fcf/4733c2f1a53e4b0998fee3cff8b56479/FLAG90a6f6376 [2019-11-20 08:55:44,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/de2140fcf/4733c2f1a53e4b0998fee3cff8b56479 [2019-11-20 08:55:44,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:55:44,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 08:55:44,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:55:44,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:55:44,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:55:44,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e330c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44, skipping insertion in model container [2019-11-20 08:55:44,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,528 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:55:44,546 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:55:44,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:55:44,760 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:55:44,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:55:44,908 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:55:44,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44 WrapperNode [2019-11-20 08:55:44,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:55:44,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 08:55:44,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 08:55:44,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 08:55:44,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 08:55:44,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:55:44,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:55:44,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:55:44,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... [2019-11-20 08:55:44,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:55:44,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:55:44,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:55:44,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:55:44,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/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 [2019-11-20 08:55:45,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:55:45,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:55:45,146 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:55:45,146 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 08:55:45,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:45 BoogieIcfgContainer [2019-11-20 08:55:45,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:55:45,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:55:45,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:55:45,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:55:45,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:55:44" (1/3) ... [2019-11-20 08:55:45,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee2bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:45, skipping insertion in model container [2019-11-20 08:55:45,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:44" (2/3) ... [2019-11-20 08:55:45,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee2bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:45, skipping insertion in model container [2019-11-20 08:55:45,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:45" (3/3) ... [2019-11-20 08:55:45,155 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-11-20 08:55:45,165 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:55:45,172 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 08:55:45,184 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 08:55:45,211 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:55:45,211 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 08:55:45,212 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:55:45,212 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:55:45,212 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:55:45,212 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:55:45,213 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:55:45,213 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:55:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 08:55:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 08:55:45,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:55:45,238 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 08:55:45,239 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:55:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:55:45,245 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-20 08:55:45,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 08:55:45,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940385878] [2019-11-20 08:55:45,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 08:55:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:55:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:55:45,395 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 08:55:45,396 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 08:55:45,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:55:45 BoogieIcfgContainer [2019-11-20 08:55:45,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 08:55:45,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 08:55:45,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 08:55:45,420 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 08:55:45,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:45" (3/4) ... [2019-11-20 08:55:45,426 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 08:55:45,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 08:55:45,430 INFO L168 Benchmark]: Toolchain (without parser) took 915.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:55:45,431 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:55:45,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -164.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:45,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.97 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. [2019-11-20 08:55:45,435 INFO L168 Benchmark]: Boogie Preprocessor took 15.15 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. [2019-11-20 08:55:45,436 INFO L168 Benchmark]: RCFGBuilder took 191.68 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:45,437 INFO L168 Benchmark]: TraceAbstraction took 270.72 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:45,438 INFO L168 Benchmark]: Witness Printer took 6.81 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. [2019-11-20 08:55:45,447 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 395.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -164.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.97 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 15.15 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 191.68 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 270.72 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.81 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. * 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: 0.2s, 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 0.1.24-678e011 [2019-11-20 08:55:47,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 08:55:47,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 08:55:47,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 08:55:47,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 08:55:47,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 08:55:47,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 08:55:47,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 08:55:47,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 08:55:47,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 08:55:47,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 08:55:47,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 08:55:47,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 08:55:47,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 08:55:47,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 08:55:47,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 08:55:47,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 08:55:47,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 08:55:47,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 08:55:47,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 08:55:47,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 08:55:47,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 08:55:47,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 08:55:47,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 08:55:47,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 08:55:47,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 08:55:47,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 08:55:47,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 08:55:47,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 08:55:47,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 08:55:47,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 08:55:47,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 08:55:47,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 08:55:47,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 08:55:47,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 08:55:47,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 08:55:47,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 08:55:47,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 08:55:47,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 08:55:47,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 08:55:47,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 08:55:47,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 08:55:47,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 08:55:47,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 08:55:47,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 08:55:47,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 08:55:47,617 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 08:55:47,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 08:55:47,624 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 08:55:47,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 08:55:47,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 08:55:47,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 08:55:47,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 08:55:47,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 08:55:47,627 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 08:55:47,627 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 08:55:47,627 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 08:55:47,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 08:55:47,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 08:55:47,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 08:55:47,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 08:55:47,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 08:55:47,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 08:55:47,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 08:55:47,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 08:55:47,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 08:55:47,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 08:55:47,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 08:55:47,632 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 08:55:47,632 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 08:55:47,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 08:55:47,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 08:55:47,633 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/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer 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 [2019-11-20 08:55:47,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 08:55:47,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 08:55:47,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 08:55:47,999 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 08:55:48,000 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 08:55:48,001 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/../../sv-benchmarks/c/float-benchs/nan_float.c [2019-11-20 08:55:48,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/3a8c110ba/436baf6611de43bea88a6d871dc99959/FLAG7798dcb2e [2019-11-20 08:55:48,543 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 08:55:48,544 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/sv-benchmarks/c/float-benchs/nan_float.c [2019-11-20 08:55:48,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/3a8c110ba/436baf6611de43bea88a6d871dc99959/FLAG7798dcb2e [2019-11-20 08:55:48,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/data/3a8c110ba/436baf6611de43bea88a6d871dc99959 [2019-11-20 08:55:48,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 08:55:48,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 08:55:48,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 08:55:48,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 08:55:48,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 08:55:48,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:48" (1/1) ... [2019-11-20 08:55:48,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff7b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:48, skipping insertion in model container [2019-11-20 08:55:48,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:55:48" (1/1) ... [2019-11-20 08:55:48,989 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 08:55:49,007 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 08:55:49,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:55:49,208 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 08:55:49,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 08:55:49,235 INFO L192 MainTranslator]: Completed translation [2019-11-20 08:55:49,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49 WrapperNode [2019-11-20 08:55:49,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 08:55:49,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 08:55:49,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 08:55:49,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 08:55:49,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 08:55:49,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 08:55:49,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 08:55:49,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 08:55:49,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... [2019-11-20 08:55:49,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 08:55:49,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 08:55:49,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 08:55:49,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 08:55:49,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/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 [2019-11-20 08:55:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 08:55:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 08:55:49,554 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 08:55:49,555 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 08:55:49,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:49 BoogieIcfgContainer [2019-11-20 08:55:49,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 08:55:49,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 08:55:49,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 08:55:49,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 08:55:49,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:55:48" (1/3) ... [2019-11-20 08:55:49,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e03f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:49, skipping insertion in model container [2019-11-20 08:55:49,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:55:49" (2/3) ... [2019-11-20 08:55:49,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e03f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:55:49, skipping insertion in model container [2019-11-20 08:55:49,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:49" (3/3) ... [2019-11-20 08:55:49,564 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_float.c [2019-11-20 08:55:49,574 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 08:55:49,580 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 08:55:49,589 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 08:55:49,612 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 08:55:49,612 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 08:55:49,613 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 08:55:49,613 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 08:55:49,613 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 08:55:49,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 08:55:49,613 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 08:55:49,614 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 08:55:49,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 08:55:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 08:55:49,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:55:49,633 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 08:55:49,633 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 08:55:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:55:49,638 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-20 08:55:49,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:55:49,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381602220] [2019-11-20 08:55:49,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/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 [2019-11-20 08:55:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:55:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 08:55:49,728 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 08:55:49,729 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 08:55:49,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 08:55:49,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:55:49 BoogieIcfgContainer [2019-11-20 08:55:49,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 08:55:49,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 08:55:49,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 08:55:49,958 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 08:55:49,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:55:49" (3/4) ... [2019-11-20 08:55:49,961 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 08:55:49,997 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b28b881d-ec9d-4e99-b269-489f4faa5f02/bin/uautomizer/witness.graphml [2019-11-20 08:55:49,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 08:55:50,000 INFO L168 Benchmark]: Toolchain (without parser) took 1028.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:50,000 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 08:55:50,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:50,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:50,003 INFO L168 Benchmark]: Boogie Preprocessor took 25.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:50,004 INFO L168 Benchmark]: RCFGBuilder took 205.97 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:50,005 INFO L168 Benchmark]: TraceAbstraction took 400.84 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:55:50,005 INFO L168 Benchmark]: Witness Printer took 39.62 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. [2019-11-20 08:55:50,009 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 205.97 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 400.84 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Witness Printer took 39.62 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, 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...