./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/nan_double.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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_double.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dc1721e577997f4966a61524053c01b76a6be07 ...................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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_double.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dc1721e577997f4966a61524053c01b76a6be07 ............................................................................................................................................................................................................................................ 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 0.1.25-8bd4bc6 [2020-07-28 17:26:33,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:26:33,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:26:33,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:26:33,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:26:33,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:26:33,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:26:33,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:26:33,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:26:33,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:26:33,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:26:33,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:26:33,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:26:33,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:26:33,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:26:33,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:26:33,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:26:33,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:26:33,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:26:33,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:26:33,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:26:33,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:26:33,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:26:33,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:26:33,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:26:33,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:26:33,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:26:33,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:26:33,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:26:33,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:26:33,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:26:33,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:26:33,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:26:33,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:26:33,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:26:33,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:26:33,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:26:33,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:26:33,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:26:33,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:26:33,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:26:33,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:26:33,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:26:33,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:26:33,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:26:33,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:26:33,833 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:26:33,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:26:33,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:26:33,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:26:33,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:26:33,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:26:33,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:26:33,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:26:33,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:26:33,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:26:33,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:26:33,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:26:33,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:26:33,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:26:33,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:26:33,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:26:33,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:26:33,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:26:33,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:26:33,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:26:33,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:26:33,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:26:33,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:26:33,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:26:33,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:26:33,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dc1721e577997f4966a61524053c01b76a6be07 [2020-07-28 17:26:34,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:26:34,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:26:34,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:26:34,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:26:34,295 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:26:34,297 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_double.c [2020-07-28 17:26:34,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/237ae0000/b7379c53208e4621bf75532848b9b7cc/FLAG83bc05c85 [2020-07-28 17:26:34,788 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:26:34,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_double.c [2020-07-28 17:26:34,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/237ae0000/b7379c53208e4621bf75532848b9b7cc/FLAG83bc05c85 [2020-07-28 17:26:35,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/237ae0000/b7379c53208e4621bf75532848b9b7cc [2020-07-28 17:26:35,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:26:35,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:26:35,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:35,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:26:35,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:26:35,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c212cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35, skipping insertion in model container [2020-07-28 17:26:35,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:26:35,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:26:35,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:35,385 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:26:35,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:35,416 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:26:35,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35 WrapperNode [2020-07-28 17:26:35,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:35,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:35,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:26:35,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:26:35,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:35,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:26:35,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:26:35,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:26:35,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (1/1) ... [2020-07-28 17:26:35,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:26:35,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:26:35,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:26:35,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:26:35,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (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 [2020-07-28 17:26:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:26:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:26:35,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:26:35,762 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:26:35,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:35 BoogieIcfgContainer [2020-07-28 17:26:35,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:26:35,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:26:35,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:26:35,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:26:35,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:26:35" (1/3) ... [2020-07-28 17:26:35,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26595aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:35, skipping insertion in model container [2020-07-28 17:26:35,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:35" (2/3) ... [2020-07-28 17:26:35,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26595aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:35, skipping insertion in model container [2020-07-28 17:26:35,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:35" (3/3) ... [2020-07-28 17:26:35,776 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_double.c [2020-07-28 17:26:35,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:26:35,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:26:35,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:26:35,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:26:35,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:26:35,837 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:26:35,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:26:35,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:26:35,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:26:35,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:26:35,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:26:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-07-28 17:26:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-07-28 17:26:35,861 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:35,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-07-28 17:26:35,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:35,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2020-07-28 17:26:35,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:26:35,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609720032] [2020-07-28 17:26:35,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:26:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:35,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:35,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:35,980 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:26:35,981 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:26:35,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:26:35,998 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:26:35,999 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:26:35,999 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:26:35,999 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 17:26:35,999 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 17:26:35,999 WARN L170 areAnnotationChecker]: L6-3 has no Hoare annotation [2020-07-28 17:26:35,999 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 17:26:36,000 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:26:36,000 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:26:36,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:26:36 BoogieIcfgContainer [2020-07-28 17:26:36,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:26:36,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:26:36,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:26:36,004 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:26:36,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:35" (3/4) ... [2020-07-28 17:26:36,008 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:26:36,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:26:36,012 INFO L168 Benchmark]: Toolchain (without parser) took 838.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -120.9 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:36,013 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:36,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.78 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:36,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.73 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:36,016 INFO L168 Benchmark]: Boogie Preprocessor took 73.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:36,017 INFO L168 Benchmark]: RCFGBuilder took 239.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:36,018 INFO L168 Benchmark]: TraceAbstraction took 235.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:36,018 INFO L168 Benchmark]: Witness Printer took 4.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:36,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.78 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.73 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 239.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 235.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 13. Possible FailurePath: [L10] double x; [L11] x = __VERIFIER_nondet_double() [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 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=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 0.1.25-8bd4bc6 [2020-07-28 17:26:38,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:26:38,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:26:38,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:26:38,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:26:38,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:26:38,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:26:38,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:26:38,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:26:38,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:26:38,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:26:38,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:26:38,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:26:38,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:26:38,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:26:38,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:26:38,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:26:38,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:26:38,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:26:38,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:26:38,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:26:38,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:26:38,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:26:38,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:26:38,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:26:38,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:26:38,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:26:38,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:26:38,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:26:38,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:26:38,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:26:38,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:26:38,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:26:38,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:26:38,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:26:38,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:26:38,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:26:38,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:26:38,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:26:38,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:26:38,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:26:38,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:26:38,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:26:38,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:26:38,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:26:38,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:26:38,176 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:26:38,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:26:38,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:26:38,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:26:38,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:26:38,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:26:38,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:26:38,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:26:38,179 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:26:38,179 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:26:38,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:26:38,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:26:38,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:26:38,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:26:38,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:26:38,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:26:38,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:26:38,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:26:38,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:26:38,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:26:38,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:26:38,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:26:38,183 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:26:38,183 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:26:38,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:26:38,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:26:38,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:26:38,185 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dc1721e577997f4966a61524053c01b76a6be07 [2020-07-28 17:26:38,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:26:38,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:26:38,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:26:38,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:26:38,530 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:26:38,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_double.c [2020-07-28 17:26:38,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8cde322/6e0274eb81314f56a11f60d4f393e0a2/FLAG47a754b38 [2020-07-28 17:26:38,999 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:26:38,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_double.c [2020-07-28 17:26:39,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8cde322/6e0274eb81314f56a11f60d4f393e0a2/FLAG47a754b38 [2020-07-28 17:26:39,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8cde322/6e0274eb81314f56a11f60d4f393e0a2 [2020-07-28 17:26:39,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:26:39,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:26:39,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:39,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:26:39,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:26:39,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5ccdf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39, skipping insertion in model container [2020-07-28 17:26:39,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:26:39,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:26:39,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:39,557 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:26:39,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:26:39,590 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:26:39,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39 WrapperNode [2020-07-28 17:26:39,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:26:39,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:39,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:26:39,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:26:39,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:26:39,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:26:39,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:26:39,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:26:39,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (1/1) ... [2020-07-28 17:26:39,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:26:39,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:26:39,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:26:39,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:26:39,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (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 [2020-07-28 17:26:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:26:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:26:39,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:26:39,958 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:26:39,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:39 BoogieIcfgContainer [2020-07-28 17:26:39,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:26:39,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:26:39,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:26:39,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:26:39,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:26:39" (1/3) ... [2020-07-28 17:26:39,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec022d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:39, skipping insertion in model container [2020-07-28 17:26:39,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:26:39" (2/3) ... [2020-07-28 17:26:39,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec022d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:26:39, skipping insertion in model container [2020-07-28 17:26:39,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:39" (3/3) ... [2020-07-28 17:26:39,972 INFO L109 eAbstractionObserver]: Analyzing ICFG nan_double.c [2020-07-28 17:26:39,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:26:39,989 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:26:40,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:26:40,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:26:40,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:26:40,026 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:26:40,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:26:40,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:26:40,027 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:26:40,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:26:40,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:26:40,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-07-28 17:26:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:26:40,047 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:26:40,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:26:40,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:26:40,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:26:40,058 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-07-28 17:26:40,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:26:40,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868841874] [2020-07-28 17:26:40,071 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 [2020-07-28 17:26:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:40,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:26:40,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:26:40,150 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 17:26:40,151 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:26:40,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:26:40,385 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:26:40,385 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:26:40,385 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:26:40,385 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-28 17:26:40,386 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 17:26:40,386 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 17:26:40,386 WARN L170 areAnnotationChecker]: L6-3 has no Hoare annotation [2020-07-28 17:26:40,386 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 17:26:40,386 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:26:40,386 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:26:40,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:26:40 BoogieIcfgContainer [2020-07-28 17:26:40,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:26:40,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:26:40,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:26:40,390 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:26:40,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:26:39" (3/4) ... [2020-07-28 17:26:40,393 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:26:40,450 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:26:40,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:26:40,455 INFO L168 Benchmark]: Toolchain (without parser) took 1105.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 954.8 MB in the beginning and 1.1 GB in the end (delta: -139.1 MB). Peak memory consumption was 1.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:40,456 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:40,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.35 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:40,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:40,467 INFO L168 Benchmark]: Boogie Preprocessor took 90.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:40,468 INFO L168 Benchmark]: RCFGBuilder took 238.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:40,469 INFO L168 Benchmark]: TraceAbstraction took 425.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:26:40,469 INFO L168 Benchmark]: Witness Printer took 60.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:26:40,481 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 240.35 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.65 ms. Allocated memory is still 1.0 GB. Free memory is still 944.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 90.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 238.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 425.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * Witness Printer took 60.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] double x; [L11] x = __VERIFIER_nondet_double() [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 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=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...