./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a88b43a3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 606f7c2605a208e0a98efea41e23adfc30d8b8f4 .................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 606f7c2605a208e0a98efea41e23adfc30d8b8f4 ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-a88b43a [2019-11-20 12:10:09,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 12:10:09,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 12:10:09,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 12:10:09,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 12:10:09,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 12:10:09,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 12:10:09,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 12:10:09,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 12:10:09,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 12:10:09,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 12:10:09,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 12:10:09,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 12:10:09,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 12:10:09,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 12:10:09,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 12:10:09,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 12:10:09,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 12:10:09,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 12:10:09,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 12:10:09,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 12:10:09,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 12:10:09,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 12:10:09,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 12:10:09,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 12:10:09,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 12:10:09,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 12:10:09,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 12:10:09,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 12:10:09,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 12:10:09,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 12:10:09,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 12:10:09,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 12:10:09,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 12:10:09,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 12:10:09,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 12:10:09,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 12:10:09,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 12:10:09,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 12:10:09,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 12:10:09,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 12:10:09,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-20 12:10:09,137 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 12:10:09,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 12:10:09,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 12:10:09,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 12:10:09,140 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 12:10:09,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 12:10:09,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 12:10:09,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 12:10:09,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 12:10:09,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 12:10:09,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 12:10:09,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 12:10:09,146 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 12:10:09,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 12:10:09,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 12:10:09,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 12:10:09,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 12:10:09,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 12:10:09,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 12:10:09,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 12:10:09,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 12:10:09,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 12:10:09,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 12:10:09,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 12:10:09,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 12:10:09,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 12:10:09,151 INFO L138 SettingsManager]: * To the following directory=dump/ 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 606f7c2605a208e0a98efea41e23adfc30d8b8f4 [2019-11-20 12:10:09,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 12:10:09,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 12:10:09,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 12:10:09,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 12:10:09,473 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 12:10:09,474 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2019-11-20 12:10:09,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2f82ea8/56effb6922e343b59e942ccd6a66d749/FLAGfdcd6350d [2019-11-20 12:10:10,080 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 12:10:10,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2019-11-20 12:10:10,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2f82ea8/56effb6922e343b59e942ccd6a66d749/FLAGfdcd6350d [2019-11-20 12:10:10,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2f82ea8/56effb6922e343b59e942ccd6a66d749 [2019-11-20 12:10:10,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 12:10:10,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 12:10:10,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 12:10:10,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 12:10:10,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 12:10:10,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:10" (1/1) ... [2019-11-20 12:10:10,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53621ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:10, skipping insertion in model container [2019-11-20 12:10:10,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:10" (1/1) ... [2019-11-20 12:10:10,386 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 12:10:10,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 12:10:10,862 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: fesetround not supported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBuiltinFesetround(IntegerTranslation.java:959) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.handleBuiltinFesetround(StandardFunctionHandler.java:1335) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:210) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1262) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:906) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1284) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2176) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:187) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:114) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 12:10:10,869 INFO L168 Benchmark]: Toolchain (without parser) took 503.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-20 12:10:10,870 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 12:10:10,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-20 12:10:10,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 499.73 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: fesetround not supported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: fesetround not supported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBuiltinFesetround(IntegerTranslation.java:959) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-a88b43a [2019-11-20 12:10:12,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 12:10:12,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 12:10:12,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 12:10:12,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 12:10:12,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 12:10:12,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 12:10:12,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 12:10:12,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 12:10:12,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 12:10:12,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 12:10:12,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 12:10:12,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 12:10:12,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 12:10:12,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 12:10:12,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 12:10:12,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 12:10:12,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 12:10:12,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 12:10:12,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 12:10:12,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 12:10:12,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 12:10:12,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 12:10:12,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 12:10:12,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 12:10:12,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 12:10:12,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 12:10:12,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 12:10:12,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 12:10:12,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 12:10:12,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 12:10:12,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 12:10:12,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 12:10:12,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 12:10:12,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 12:10:12,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 12:10:12,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 12:10:12,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 12:10:12,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 12:10:12,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 12:10:12,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 12:10:12,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-20 12:10:12,933 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 12:10:12,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 12:10:12,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 12:10:12,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 12:10:12,938 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 12:10:12,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 12:10:12,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 12:10:12,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 12:10:12,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 12:10:12,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 12:10:12,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 12:10:12,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 12:10:12,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 12:10:12,941 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 12:10:12,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 12:10:12,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 12:10:12,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 12:10:12,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 12:10:12,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 12:10:12,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 12:10:12,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 12:10:12,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 12:10:12,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 12:10:12,944 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 12:10:12,945 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 12:10:12,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 12:10:12,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 12:10:12,945 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-20 12:10:12,946 INFO L138 SettingsManager]: * To the following directory=dump/ 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 606f7c2605a208e0a98efea41e23adfc30d8b8f4 [2019-11-20 12:10:13,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 12:10:13,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 12:10:13,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 12:10:13,291 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 12:10:13,292 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 12:10:13,293 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2019-11-20 12:10:13,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e718a2cb5/0e9da1a2de024b37a89f2e768b68a732/FLAG575e8e12d [2019-11-20 12:10:13,893 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 12:10:13,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2019-11-20 12:10:13,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e718a2cb5/0e9da1a2de024b37a89f2e768b68a732/FLAG575e8e12d [2019-11-20 12:10:14,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e718a2cb5/0e9da1a2de024b37a89f2e768b68a732 [2019-11-20 12:10:14,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 12:10:14,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 12:10:14,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 12:10:14,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 12:10:14,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 12:10:14,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:14" (1/1) ... [2019-11-20 12:10:14,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8d3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:14, skipping insertion in model container [2019-11-20 12:10:14,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:14" (1/1) ... [2019-11-20 12:10:14,194 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 12:10:14,238 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 12:10:15,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 12:10:15,033 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 12:10:15,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 12:10:15,465 INFO L192 MainTranslator]: Completed translation [2019-11-20 12:10:15,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15 WrapperNode [2019-11-20 12:10:15,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 12:10:15,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 12:10:15,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 12:10:15,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 12:10:15,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 12:10:15,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 12:10:15,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 12:10:15,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 12:10:15,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... [2019-11-20 12:10:15,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 12:10:15,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 12:10:15,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 12:10:15,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 12:10:15,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 12:10:15,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 12:10:15,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 12:10:16,018 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 12:10:16,018 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-20 12:10:16,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:16 BoogieIcfgContainer [2019-11-20 12:10:16,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 12:10:16,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 12:10:16,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 12:10:16,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 12:10:16,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:14" (1/3) ... [2019-11-20 12:10:16,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed9c5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:16, skipping insertion in model container [2019-11-20 12:10:16,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:15" (2/3) ... [2019-11-20 12:10:16,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed9c5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:16, skipping insertion in model container [2019-11-20 12:10:16,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:16" (3/3) ... [2019-11-20 12:10:16,029 INFO L109 eAbstractionObserver]: Analyzing ICFG float-rounding1.i [2019-11-20 12:10:16,040 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 12:10:16,047 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-20 12:10:16,059 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-20 12:10:16,084 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 12:10:16,085 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 12:10:16,085 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 12:10:16,085 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 12:10:16,086 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 12:10:16,086 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 12:10:16,086 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 12:10:16,086 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 12:10:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-20 12:10:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 12:10:16,109 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:16,110 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 12:10:16,111 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 12:10:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:16,117 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 12:10:16,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:16,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322099074] [2019-11-20 12:10:16,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 12:10:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 12:10:16,262 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 12:10:16,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 12:10:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:10:16,308 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 12:10:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 12:10:16,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322099074] [2019-11-20 12:10:16,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 12:10:16,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 12:10:16,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041919171] [2019-11-20 12:10:16,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 12:10:16,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 12:10:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 12:10:16,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 12:10:16,342 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-20 12:10:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 12:10:16,415 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-20 12:10:16,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 12:10:16,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-20 12:10:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 12:10:16,426 INFO L225 Difference]: With dead ends: 34 [2019-11-20 12:10:16,426 INFO L226 Difference]: Without dead ends: 12 [2019-11-20 12:10:16,429 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 12:10:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-20 12:10:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 12:10:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 12:10:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-20 12:10:16,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2019-11-20 12:10:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 12:10:16,463 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-20 12:10:16,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 12:10:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-20 12:10:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 12:10:16,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 12:10:16,464 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 12:10:16,666 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 12:10:16,666 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 12:10:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 12:10:16,667 INFO L82 PathProgramCache]: Analyzing trace with hash 29801027, now seen corresponding path program 1 times [2019-11-20 12:10:16,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 12:10:16,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304517043] [2019-11-20 12:10:16,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-20 12:10:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 12:10:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 12:10:16,782 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 12:10:16,783 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 12:10:16,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 12:10:17,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:10:17 BoogieIcfgContainer [2019-11-20 12:10:17,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 12:10:17,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 12:10:17,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 12:10:17,013 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 12:10:17,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:16" (3/4) ... [2019-11-20 12:10:17,015 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 12:10:17,070 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-20 12:10:17,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 12:10:17,073 INFO L168 Benchmark]: Toolchain (without parser) took 2897.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 955.0 MB in the beginning and 981.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 124.2 MB. Max. memory is 11.5 GB. [2019-11-20 12:10:17,074 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 12:10:17,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1292.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 949.6 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. [2019-11-20 12:10:17,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 12:10:17,077 INFO L168 Benchmark]: Boogie Preprocessor took 30.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 12:10:17,077 INFO L168 Benchmark]: RCFGBuilder took 449.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-20 12:10:17,079 INFO L168 Benchmark]: TraceAbstraction took 991.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 981.2 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 11.5 GB. [2019-11-20 12:10:17,080 INFO L168 Benchmark]: Witness Printer took 57.95 ms. Allocated memory is still 1.2 GB. Free memory is still 981.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 12:10:17,085 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1292.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 949.6 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 71.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 449.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 991.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 981.2 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.95 ms. Allocated memory is still 1.2 GB. Free memory is still 981.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1096]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1105] float f1 = 0x1.0p+0; [L1106] float f2 = 0x1.8p-24; [L1088] float roundToNearestSum = f1 + f2; [L1089] COND FALSE !(!(roundToNearestSum == 0x1.000002p+0f)) [L1095] float roundDownSum = f1 + f2; [L1096] COND TRUE !(roundDownSum == 0x1.0p+0f) [L1096] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 13 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 7 NumberOfNonLiveVariables, 11 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...