./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 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/nan_float.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/nan_float.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(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 0.1.25-9a8b2e8 [2020-10-20 00:20:29,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:20:29,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:20:29,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:20:29,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:20:29,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:20:29,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:20:29,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:20:29,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:20:29,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:20:29,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:20:29,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:20:29,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:20:29,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:20:29,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:20:29,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:20:29,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:20:29,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:20:29,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:20:29,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:20:29,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:20:29,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:20:29,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:20:29,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:20:29,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:20:29,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:20:29,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:20:29,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:20:29,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:20:29,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:20:29,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:20:29,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:20:29,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:20:29,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:20:29,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:20:29,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:20:29,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:20:29,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:20:29,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:20:29,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:20:29,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:20:29,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:20:29,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:20:29,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:20:29,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:20:29,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:20:29,943 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:20:29,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:20:29,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:20:29,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:20:29,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:20:29,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:20:29,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:20:29,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:20:29,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:20:29,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:20:29,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:20:29,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:20:29,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:20:29,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:20:29,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:20:29,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:20:29,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:20:29,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:20:29,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:20:29,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:20:29,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:20:29,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:20:29,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:20:29,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:20:29,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:20:29,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(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 [2020-10-20 00:20:30,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:20:30,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:20:30,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:20:30,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:20:30,185 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:20:30,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-20 00:20:30,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415f8298a/4b882b1d05614719a660cb3db85fadc8/FLAGd7d8deec2 [2020-10-20 00:20:30,696 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:20:30,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-20 00:20:30,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415f8298a/4b882b1d05614719a660cb3db85fadc8/FLAGd7d8deec2 [2020-10-20 00:20:31,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/415f8298a/4b882b1d05614719a660cb3db85fadc8 [2020-10-20 00:20:31,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:20:31,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:20:31,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:31,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:20:31,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:20:31,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d71b2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31, skipping insertion in model container [2020-10-20 00:20:31,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:20:31,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:20:31,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:31,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:20:31,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:31,504 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:20:31,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31 WrapperNode [2020-10-20 00:20:31,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:31,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:31,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:20:31,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:20:31,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:31,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:20:31,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:20:31,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:20:31,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (1/1) ... [2020-10-20 00:20:31,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:20:31,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:20:31,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:20:31,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:20:31,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (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 [2020-10-20 00:20:31,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:20:31,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:20:31,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:20:31,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:20:31,811 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:20:31,812 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:20:31,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:31 BoogieIcfgContainer [2020-10-20 00:20:31,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:20:31,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:20:31,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:20:31,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:20:31,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:20:31" (1/3) ... [2020-10-20 00:20:31,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331103c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:31, skipping insertion in model container [2020-10-20 00:20:31,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:31" (2/3) ... [2020-10-20 00:20:31,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331103c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:31, skipping insertion in model container [2020-10-20 00:20:31,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:31" (3/3) ... [2020-10-20 00:20:31,822 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-20 00:20:31,834 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:20:31,840 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:20:31,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:20:31,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:20:31,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:20:31,877 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:20:31,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:20:31,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:20:31,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:20:31,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:20:31,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:20:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-20 00:20:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:20:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:31,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:20:31,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:31,903 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-20 00:20:31,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:20:31,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444501752] [2020-10-20 00:20:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:20:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:32,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:32,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:32,044 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:20:32,045 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:20:32,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:20:32,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:20:32 BoogieIcfgContainer [2020-10-20 00:20:32,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:20:32,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:20:32,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:20:32,066 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:20:32,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:31" (3/4) ... [2020-10-20 00:20:32,070 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:20:32,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:20:32,074 INFO L168 Benchmark]: Toolchain (without parser) took 918.96 ms. Allocated memory was 34.6 MB in the beginning and 45.6 MB in the end (delta: 11.0 MB). Free memory was 7.1 MB in the beginning and 10.7 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,075 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.6 MB. Free memory was 13.0 MB in the beginning and 12.9 MB in the end (delta: 68.4 kB). Peak memory consumption was 68.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.71 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 6.2 MB in the beginning and 26.6 MB in the end (delta: -20.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.29 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 MB in the beginning and 24.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,078 INFO L168 Benchmark]: Boogie Preprocessor took 19.67 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 23.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,079 INFO L168 Benchmark]: RCFGBuilder took 251.30 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 23.7 MB in the beginning and 25.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,080 INFO L168 Benchmark]: TraceAbstraction took 250.72 ms. Allocated memory is still 45.6 MB. Free memory was 24.7 MB in the beginning and 11.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,081 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 45.6 MB. Free memory was 11.1 MB in the beginning and 10.7 MB in the end (delta: 445.7 kB). Peak memory consumption was 445.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:32,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.6 MB. Free memory was 13.0 MB in the beginning and 12.9 MB in the end (delta: 68.4 kB). Peak memory consumption was 68.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 346.71 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 6.2 MB in the beginning and 26.6 MB in the end (delta: -20.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 34.29 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 MB in the beginning and 24.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.67 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 23.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 251.30 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 23.7 MB in the beginning and 25.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 250.72 ms. Allocated memory is still 45.6 MB. Free memory was 24.7 MB in the beginning and 11.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. * Witness Printer took 5.07 ms. Allocated memory is still 45.6 MB. Free memory was 11.1 MB in the beginning and 10.7 MB in the end (delta: 445.7 kB). Peak memory consumption was 445.7 kB. Max. memory is 14.3 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: 0.1s, 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 0.1.25-9a8b2e8 [2020-10-20 00:20:34,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:20:34,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:20:34,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:20:34,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:20:34,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:20:34,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:20:34,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:20:34,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:20:34,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:20:34,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:20:34,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:20:34,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:20:34,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:20:34,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:20:34,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:20:34,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:20:34,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:20:34,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:20:34,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:20:34,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:20:34,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:20:34,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:20:34,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:20:34,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:20:34,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:20:34,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:20:34,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:20:34,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:20:34,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:20:34,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:20:34,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:20:34,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:20:34,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:20:34,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:20:34,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:20:34,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:20:34,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:20:34,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:20:34,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:20:34,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:20:34,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:20:34,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:20:34,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:20:34,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:20:34,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:20:34,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:20:34,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:20:34,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:20:34,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:20:34,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:20:34,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:20:34,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:20:34,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:20:34,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:20:34,365 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:20:34,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:20:34,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:20:34,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:20:34,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:20:34,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:20:34,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:20:34,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:20:34,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:20:34,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:20:34,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:20:34,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:20:34,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:20:34,369 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:20:34,369 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:20:34,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:20:34,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:20:34,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:20:34,370 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(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 [2020-10-20 00:20:34,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:20:34,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:20:34,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:20:34,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:20:34,597 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:20:34,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2020-10-20 00:20:34,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1277808f/089407a463474bfe9b98bd03e619ef3b/FLAG4843156f9 [2020-10-20 00:20:35,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:20:35,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2020-10-20 00:20:35,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1277808f/089407a463474bfe9b98bd03e619ef3b/FLAG4843156f9 [2020-10-20 00:20:35,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1277808f/089407a463474bfe9b98bd03e619ef3b [2020-10-20 00:20:35,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:20:35,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:20:35,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:35,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:20:35,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:20:35,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:35,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e14a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35, skipping insertion in model container [2020-10-20 00:20:35,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:35,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:20:35,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:20:35,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:35,927 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:20:35,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:20:35,969 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:20:35,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35 WrapperNode [2020-10-20 00:20:35,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:20:35,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:35,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:20:35,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:20:35,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:35,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:20:36,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:20:36,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:20:36,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:20:36,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (1/1) ... [2020-10-20 00:20:36,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:20:36,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:20:36,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:20:36,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:20:36,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (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 [2020-10-20 00:20:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:20:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:20:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:20:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:20:36,340 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:20:36,341 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:20:36,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:36 BoogieIcfgContainer [2020-10-20 00:20:36,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:20:36,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:20:36,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:20:36,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:20:36,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:20:35" (1/3) ... [2020-10-20 00:20:36,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443370f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:36, skipping insertion in model container [2020-10-20 00:20:36,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:20:35" (2/3) ... [2020-10-20 00:20:36,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5443370f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:20:36, skipping insertion in model container [2020-10-20 00:20:36,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:36" (3/3) ... [2020-10-20 00:20:36,351 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2020-10-20 00:20:36,363 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:20:36,370 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:20:36,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:20:36,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:20:36,404 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:20:36,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:20:36,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:20:36,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:20:36,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:20:36,405 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:20:36,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:20:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-20 00:20:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:20:36,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:20:36,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:20:36,423 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:20:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:20:36,429 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-20 00:20:36,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:20:36,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541868020] [2020-10-20 00:20:36,442 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 [2020-10-20 00:20:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:36,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:20:36,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:20:36,566 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:20:36,567 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:20:36,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:20:36,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:20:36 BoogieIcfgContainer [2020-10-20 00:20:36,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:20:36,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:20:36,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:20:36,813 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:20:36,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:20:36" (3/4) ... [2020-10-20 00:20:36,817 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:20:36,864 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:20:36,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:20:36,867 INFO L168 Benchmark]: Toolchain (without parser) took 1371.68 ms. Allocated memory was 35.7 MB in the beginning and 46.7 MB in the end (delta: 11.0 MB). Free memory was 9.5 MB in the beginning and 27.5 MB in the end (delta: -18.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:20:36,868 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 35.1 MB. Free memory was 13.8 MB in the beginning and 13.8 MB in the end (delta: 52.3 kB). Peak memory consumption was 52.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:20:36,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.78 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 8.6 MB in the beginning and 27.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:36,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.32 ms. Allocated memory is still 44.6 MB. Free memory was 27.3 MB in the beginning and 25.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:36,874 INFO L168 Benchmark]: Boogie Preprocessor took 53.54 ms. Allocated memory is still 44.6 MB. Free memory was 25.6 MB in the beginning and 24.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:36,875 INFO L168 Benchmark]: RCFGBuilder took 271.81 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 24.3 MB in the beginning and 26.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:36,875 INFO L168 Benchmark]: TraceAbstraction took 460.51 ms. Allocated memory is still 46.7 MB. Free memory was 25.8 MB in the beginning and 10.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:36,876 INFO L168 Benchmark]: Witness Printer took 52.83 ms. Allocated memory is still 46.7 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:20:36,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 35.1 MB. Free memory was 13.8 MB in the beginning and 13.8 MB in the end (delta: 52.3 kB). Peak memory consumption was 52.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 469.78 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 8.6 MB in the beginning and 27.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.32 ms. Allocated memory is still 44.6 MB. Free memory was 27.3 MB in the beginning and 25.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 53.54 ms. Allocated memory is still 44.6 MB. Free memory was 25.6 MB in the beginning and 24.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 271.81 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 24.3 MB in the beginning and 26.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 460.51 ms. Allocated memory is still 46.7 MB. Free memory was 25.8 MB in the beginning and 10.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. * Witness Printer took 52.83 ms. Allocated memory is still 46.7 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 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: 0.3s, 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...