./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3490f452c75bd943c0f7c3f7fb58032fe6d705c ................................................................................................................................................................................................................................... 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 -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3490f452c75bd943c0f7c3f7fb58032fe6d705c ........................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-10-24 22:28:56,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:28:56,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:28:56,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:28:56,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:28:56,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:28:56,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:28:56,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:28:56,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:28:56,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:28:56,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:28:56,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:28:56,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:28:56,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:28:56,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:28:56,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:28:56,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:28:56,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:28:56,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:28:56,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:28:56,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:28:56,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:28:56,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:28:56,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:28:56,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:28:56,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:28:56,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:28:56,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:28:56,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:28:56,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:28:56,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:28:56,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:28:56,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:28:56,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:28:56,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:28:56,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:28:56,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:28:56,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:28:56,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:28:56,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:28:56,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:28:56,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:28:56,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:28:56,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:28:56,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:28:56,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:28:56,985 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:28:56,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:28:56,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:28:56,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:28:56,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:28:56,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:28:56,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:28:56,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:28:56,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:28:56,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:28:56,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:28:56,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:28:56,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:28:56,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:28:56,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:28:56,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:28:56,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:28:56,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:28:56,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:28:56,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:28:56,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:28:56,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:28:56,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:28:56,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:28:56,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:28:56,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3490f452c75bd943c0f7c3f7fb58032fe6d705c [2020-10-24 22:28:57,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:28:57,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:28:57,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:28:57,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:28:57,392 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:28:57,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 22:28:57,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c685fce83/ca3f2697b1ca4aba8f2e6ff79fbdfc5e/FLAG576ca6f43 [2020-10-24 22:28:58,143 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:28:58,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 22:28:58,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c685fce83/ca3f2697b1ca4aba8f2e6ff79fbdfc5e/FLAG576ca6f43 [2020-10-24 22:28:58,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c685fce83/ca3f2697b1ca4aba8f2e6ff79fbdfc5e [2020-10-24 22:28:58,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:28:58,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:28:58,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:28:58,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:28:58,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:28:58,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:58,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37884e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58, skipping insertion in model container [2020-10-24 22:28:58,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:58,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:28:58,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:28:58,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:28:58,917 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:28:58,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:28:58,954 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:28:58,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58 WrapperNode [2020-10-24 22:28:58,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:28:58,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:28:58,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:28:58,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:28:58,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:58,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:28:59,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:28:59,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:28:59,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:28:59,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (1/1) ... [2020-10-24 22:28:59,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:28:59,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:28:59,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:28:59,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:28:59,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (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 [2020-10-24 22:28:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:28:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:28:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:28:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:28:59,351 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:28:59,352 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 22:28:59,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:59 BoogieIcfgContainer [2020-10-24 22:28:59,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:28:59,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:28:59,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:28:59,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:28:59,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:28:58" (1/3) ... [2020-10-24 22:28:59,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8ae45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:59, skipping insertion in model container [2020-10-24 22:28:59,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:28:58" (2/3) ... [2020-10-24 22:28:59,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8ae45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:28:59, skipping insertion in model container [2020-10-24 22:28:59,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:59" (3/3) ... [2020-10-24 22:28:59,367 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-24 22:28:59,379 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:28:59,384 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:28:59,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:28:59,424 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:28:59,425 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:28:59,425 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:28:59,425 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:28:59,425 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:28:59,426 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:28:59,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:28:59,426 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:28:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 22:28:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 22:28:59,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:28:59,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 22:28:59,450 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:28:59,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:28:59,458 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-24 22:28:59,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:28:59,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787822082] [2020-10-24 22:28:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:28:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:28:59,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:28:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:28:59,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:28:59,651 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:28:59,652 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:28:59,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:28:59,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:28:59 BoogieIcfgContainer [2020-10-24 22:28:59,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:28:59,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:28:59,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:28:59,679 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:28:59,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:28:59" (3/4) ... [2020-10-24 22:28:59,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:28:59,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:28:59,688 INFO L168 Benchmark]: Toolchain (without parser) took 1150.14 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 28.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:28:59,689 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 35.7 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:28:59,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.49 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 22.8 MB in the end (delta: -215.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 22:28:59,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.59 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 21.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:28:59,692 INFO L168 Benchmark]: Boogie Preprocessor took 39.44 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 30.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-10-24 22:28:59,693 INFO L168 Benchmark]: RCFGBuilder took 306.15 ms. Allocated memory is still 46.1 MB. Free memory was 30.5 MB in the beginning and 21.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:28:59,695 INFO L168 Benchmark]: TraceAbstraction took 319.17 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 29.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 22:28:59,695 INFO L168 Benchmark]: Witness Printer took 6.06 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 28.5 MB in the end (delta: 281.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:28:59,701 INFO L339 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 35.7 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.49 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 22.8 MB in the end (delta: -215.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.59 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 21.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.44 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 30.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 306.15 ms. Allocated memory is still 46.1 MB. Free memory was 30.5 MB in the beginning and 21.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 319.17 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 29.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.06 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 28.5 MB in the end (delta: 281.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15. Possible FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L8] COND TRUE !(cond) [L3] __assert_fail("0", "nan_float.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-10-24 22:29:02,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:29:02,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:29:02,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:29:02,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:29:02,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:29:02,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:29:02,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:29:02,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:29:02,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:29:02,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:29:02,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:29:02,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:29:02,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:29:02,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:29:02,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:29:02,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:29:02,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:29:02,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:29:02,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:29:02,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:29:02,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:29:02,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:29:02,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:29:02,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:29:02,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:29:02,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:29:02,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:29:02,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:29:02,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:29:02,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:29:02,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:29:02,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:29:02,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:29:02,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:29:02,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:29:02,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:29:02,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:29:02,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:29:02,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:29:02,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:29:02,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:29:02,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:29:02,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:29:02,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:29:02,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:29:02,602 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:29:02,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:29:02,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:29:02,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:29:02,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:29:02,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:29:02,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:29:02,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:29:02,604 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:29:02,604 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:29:02,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:29:02,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:29:02,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:29:02,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:29:02,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:29:02,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:29:02,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:29:02,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:29:02,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:29:02,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:29:02,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:29:02,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:29:02,606 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:29:02,607 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:29:02,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:29:02,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:29:02,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:29:02,607 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3490f452c75bd943c0f7c3f7fb58032fe6d705c [2020-10-24 22:29:03,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:29:03,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:29:03,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:29:03,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:29:03,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:29:03,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 22:29:03,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e703e9e4/959c9cea2db6404a93d8c44bc429240c/FLAG4cfccc904 [2020-10-24 22:29:03,845 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:29:03,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-24 22:29:03,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e703e9e4/959c9cea2db6404a93d8c44bc429240c/FLAG4cfccc904 [2020-10-24 22:29:04,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e703e9e4/959c9cea2db6404a93d8c44bc429240c [2020-10-24 22:29:04,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:29:04,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:29:04,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:29:04,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:29:04,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:29:04,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ca156c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04, skipping insertion in model container [2020-10-24 22:29:04,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:29:04,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:29:04,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:29:04,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:29:04,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:29:04,550 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:29:04,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04 WrapperNode [2020-10-24 22:29:04,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:29:04,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:29:04,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:29:04,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:29:04,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:29:04,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:29:04,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:29:04,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:29:04,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (1/1) ... [2020-10-24 22:29:04,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:29:04,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:29:04,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:29:04,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:29:04,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (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 [2020-10-24 22:29:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:29:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:29:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:29:04,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:29:05,101 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:29:05,102 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 22:29:05,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:05 BoogieIcfgContainer [2020-10-24 22:29:05,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:29:05,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:29:05,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:29:05,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:29:05,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:29:04" (1/3) ... [2020-10-24 22:29:05,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533c0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:29:05, skipping insertion in model container [2020-10-24 22:29:05,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:04" (2/3) ... [2020-10-24 22:29:05,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533c0476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:29:05, skipping insertion in model container [2020-10-24 22:29:05,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:05" (3/3) ... [2020-10-24 22:29:05,114 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-24 22:29:05,126 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:29:05,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:29:05,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:29:05,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:29:05,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:29:05,177 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:29:05,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:29:05,177 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:29:05,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:29:05,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:29:05,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:29:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-24 22:29:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 22:29:05,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:29:05,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 22:29:05,200 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:29:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:29:05,207 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-24 22:29:05,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:29:05,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734171693] [2020-10-24 22:29:05,222 INFO L95 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 [2020-10-24 22:29:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:29:05,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:29:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:29:05,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:29:05,385 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 22:29:05,386 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:29:05,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:29:05,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:29:05 BoogieIcfgContainer [2020-10-24 22:29:05,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:29:05,640 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:29:05,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:29:05,640 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:29:05,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:05" (3/4) ... [2020-10-24 22:29:05,644 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 22:29:05,714 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 22:29:05,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:29:05,719 INFO L168 Benchmark]: Toolchain (without parser) took 1486.95 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 25.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 22:29:05,721 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 21.6 MB in the beginning and 21.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:29:05,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.67 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 28.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:29:05,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.87 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:29:05,733 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 26.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:29:05,734 INFO L168 Benchmark]: RCFGBuilder took 484.02 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 29.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-10-24 22:29:05,736 INFO L168 Benchmark]: TraceAbstraction took 533.42 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 27.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 506.7 kB. Max. memory is 16.1 GB. [2020-10-24 22:29:05,737 INFO L168 Benchmark]: Witness Printer took 74.60 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 25.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:29:05,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 21.6 MB in the beginning and 21.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.67 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 28.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.87 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.15 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 26.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 484.02 ms. Allocated memory is still 50.3 MB. Free memory was 26.2 MB in the beginning and 29.1 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 533.42 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 27.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 506.7 kB. Max. memory is 16.1 GB. * Witness Printer took 74.60 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 25.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L8] COND TRUE !(cond) [L3] __assert_fail("0", "nan_float.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...