./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d021e9e95b35a184f0bc361dec25920cdaba06c ................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d021e9e95b35a184f0bc361dec25920cdaba06c ......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:16:08,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:16:08,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:16:08,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:16:08,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:16:08,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:16:08,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:16:08,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:16:08,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:16:08,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:16:08,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:16:08,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:16:08,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:16:08,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:16:08,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:16:08,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:16:08,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:16:08,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:16:08,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:16:08,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:16:08,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:16:08,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:16:08,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:16:08,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:16:08,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:16:08,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:16:08,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:16:08,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:16:08,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:16:08,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:16:08,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:16:08,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:16:08,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:16:08,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:16:08,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:16:08,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:16:08,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:16:08,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:16:08,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:16:08,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:16:08,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:16:08,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:16:08,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:16:08,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:16:08,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:16:08,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:16:08,799 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:16:08,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:16:08,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:16:08,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:16:08,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:16:08,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:16:08,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:16:08,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:16:08,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:16:08,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:16:08,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:16:08,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:16:08,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:16:08,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:16:08,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:16:08,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:16:08,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:16:08,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:16:08,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:16:08,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:16:08,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:16:08,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:16:08,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:16:08,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:16:08,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:16:08,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d021e9e95b35a184f0bc361dec25920cdaba06c [2020-10-20 00:16:09,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:16:09,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:16:09,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:16:09,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:16:09,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:16:09,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float8.i [2020-10-20 00:16:09,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f56bc57/dbaf0c2dedf04110829b6267560761c4/FLAG6497181ae [2020-10-20 00:16:09,766 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:16:09,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float8.i [2020-10-20 00:16:09,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f56bc57/dbaf0c2dedf04110829b6267560761c4/FLAG6497181ae [2020-10-20 00:16:09,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f56bc57/dbaf0c2dedf04110829b6267560761c4 [2020-10-20 00:16:09,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:16:09,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:16:09,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:09,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:16:09,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:16:09,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b180d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:09, skipping insertion in model container [2020-10-20 00:16:09,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:09" (1/1) ... [2020-10-20 00:16:09,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:16:10,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:16:10,723 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: finite at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1690) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:217) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1401) 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:1080) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:174) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1408) 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:1352) 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:1045) 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:1423) 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:3209) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2292) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:579) 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:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 00:16:10,732 INFO L168 Benchmark]: Toolchain (without parser) took 762.03 ms. Allocated memory was 35.7 MB in the beginning and 46.1 MB in the end (delta: 10.5 MB). Free memory was 8.0 MB in the beginning and 27.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:10,733 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 35.7 MB. Free memory is still 14.7 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:16:10,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.58 ms. Allocated memory was 35.7 MB in the beginning and 46.1 MB in the end (delta: 10.5 MB). Free memory was 7.1 MB in the beginning and 27.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:10,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 35.7 MB. Free memory is still 14.7 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 754.58 ms. Allocated memory was 35.7 MB in the beginning and 46.1 MB in the end (delta: 10.5 MB). Free memory was 7.1 MB in the beginning and 27.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: finite de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: finite: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:16:12,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:16:12,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:16:12,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:16:12,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:16:12,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:16:12,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:16:12,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:16:12,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:16:12,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:16:12,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:16:12,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:16:12,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:16:12,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:16:12,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:16:12,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:16:12,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:16:12,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:16:12,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:16:12,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:16:12,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:16:12,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:16:12,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:16:12,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:16:12,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:16:12,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:16:12,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:16:12,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:16:12,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:16:12,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:16:12,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:16:12,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:16:12,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:16:12,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:16:12,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:16:12,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:16:12,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:16:12,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:16:12,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:16:12,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:16:12,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:16:12,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:16:12,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:16:12,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:16:13,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:16:13,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:16:13,002 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:16:13,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:16:13,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:16:13,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:16:13,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:16:13,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:16:13,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:16:13,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:16:13,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:16:13,005 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:16:13,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:16:13,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:16:13,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:16:13,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:16:13,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:16:13,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:16:13,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:16:13,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:16:13,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:16:13,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:16:13,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:16:13,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:16:13,009 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:16:13,009 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:16:13,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:16:13,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:16:13,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:16:13,010 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d021e9e95b35a184f0bc361dec25920cdaba06c [2020-10-20 00:16:13,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:16:13,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:16:13,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:16:13,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:16:13,273 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:16:13,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float8.i [2020-10-20 00:16:13,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a72c63b/fffc709319aa46f98c292086520e72b9/FLAGe4f40bbf2 [2020-10-20 00:16:13,913 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:16:13,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float8.i [2020-10-20 00:16:13,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a72c63b/fffc709319aa46f98c292086520e72b9/FLAGe4f40bbf2 [2020-10-20 00:16:14,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a72c63b/fffc709319aa46f98c292086520e72b9 [2020-10-20 00:16:14,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:16:14,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:16:14,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:14,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:16:14,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:16:14,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:14" (1/1) ... [2020-10-20 00:16:14,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71bfebba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:14, skipping insertion in model container [2020-10-20 00:16:14,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:16:14" (1/1) ... [2020-10-20 00:16:14,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:16:14,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:16:14,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:14,983 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:16:15,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:16:15,353 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:16:15,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15 WrapperNode [2020-10-20 00:16:15,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:16:15,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:15,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:16:15,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:16:15,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:16:15,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:16:15,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:16:15,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:16:15,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (1/1) ... [2020-10-20 00:16:15,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:16:15,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:16:15,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:16:15,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:16:15,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (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 [2020-10-20 00:16:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:16:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:16:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:16:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:16:15,733 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:16:15,733 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:16:15,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:15 BoogieIcfgContainer [2020-10-20 00:16:15,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:16:15,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:16:15,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:16:15,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:16:15,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:16:14" (1/3) ... [2020-10-20 00:16:15,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b0b3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:15, skipping insertion in model container [2020-10-20 00:16:15,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:16:15" (2/3) ... [2020-10-20 00:16:15,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b0b3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:16:15, skipping insertion in model container [2020-10-20 00:16:15,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:15" (3/3) ... [2020-10-20 00:16:15,745 INFO L111 eAbstractionObserver]: Analyzing ICFG float8.i [2020-10-20 00:16:15,759 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:16:15,766 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:16:15,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:16:15,819 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:16:15,820 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:16:15,820 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:16:15,820 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:16:15,820 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:16:15,821 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:16:15,821 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:16:15,821 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:16:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-10-20 00:16:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:16:15,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:15,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:16:15,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:15,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1804966438, now seen corresponding path program 1 times [2020-10-20 00:16:15,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:16:15,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036077413] [2020-10-20 00:16:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:16:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:16,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:16:16,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:16:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:16:16,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:16:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:16:16,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036077413] [2020-10-20 00:16:16,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:16:16,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:16:16,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241604527] [2020-10-20 00:16:16,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:16:16,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:16:16,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:16:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:16,076 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2020-10-20 00:16:16,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:16:16,087 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-10-20 00:16:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:16:16,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:16:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:16:16,097 INFO L225 Difference]: With dead ends: 20 [2020-10-20 00:16:16,097 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 00:16:16,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:16:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 00:16:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 00:16:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 00:16:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-10-20 00:16:16,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-10-20 00:16:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:16:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-10-20 00:16:16,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:16:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-10-20 00:16:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:16:16,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:16:16,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:16:16,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:16:16,354 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:16:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:16:16,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1806813480, now seen corresponding path program 1 times [2020-10-20 00:16:16,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:16:16,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338076066] [2020-10-20 00:16:16,357 INFO L95 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 [2020-10-20 00:16:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:17,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:16:17,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:16:17,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338076066] [2020-10-20 00:16:17,224 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:16:17,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1632253002] [2020-10-20 00:16:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:16:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:17,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:16:17,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:16:17,563 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:16:17,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329643144] [2020-10-20 00:16:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:16:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:16:17,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 00:16:17,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:16:17,637 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:16:17,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:16:17,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:16:17,639 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:16:17,639 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:16:18,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:16:18,267 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:16:18,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:16:18 BoogieIcfgContainer [2020-10-20 00:16:18,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:16:18,268 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:16:18,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:16:18,269 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:16:18,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:16:15" (3/4) ... [2020-10-20 00:16:18,274 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:16:18,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:16:18,277 INFO L168 Benchmark]: Toolchain (without parser) took 4053.41 ms. Allocated memory was 35.7 MB in the beginning and 57.1 MB in the end (delta: 21.5 MB). Free memory was 13.7 MB in the beginning and 5.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,278 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1124.26 ms. Allocated memory was 35.7 MB in the beginning and 52.4 MB in the end (delta: 16.8 MB). Free memory was 12.7 MB in the beginning and 19.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.30 ms. Allocated memory is still 52.4 MB. Free memory was 18.9 MB in the beginning and 16.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,281 INFO L168 Benchmark]: Boogie Preprocessor took 25.58 ms. Allocated memory is still 52.4 MB. Free memory was 16.6 MB in the beginning and 14.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,289 INFO L168 Benchmark]: RCFGBuilder took 301.29 ms. Allocated memory was 52.4 MB in the beginning and 56.1 MB in the end (delta: 3.7 MB). Free memory was 14.8 MB in the beginning and 27.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,291 INFO L168 Benchmark]: TraceAbstraction took 2531.02 ms. Allocated memory was 56.1 MB in the beginning and 57.1 MB in the end (delta: 1.0 MB). Free memory was 27.0 MB in the beginning and 5.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,291 INFO L168 Benchmark]: Witness Printer took 6.01 ms. Allocated memory is still 57.1 MB. Free memory was 5.5 MB in the beginning and 5.1 MB in the end (delta: 414.9 kB). Peak memory consumption was 414.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:16:18,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 34.1 MB. Free memory was 10.2 MB in the beginning and 10.2 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 1124.26 ms. Allocated memory was 35.7 MB in the beginning and 52.4 MB in the end (delta: 16.8 MB). Free memory was 12.7 MB in the beginning and 19.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.30 ms. Allocated memory is still 52.4 MB. Free memory was 18.9 MB in the beginning and 16.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 25.58 ms. Allocated memory is still 52.4 MB. Free memory was 16.6 MB in the beginning and 14.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 301.29 ms. Allocated memory was 52.4 MB in the beginning and 56.1 MB in the end (delta: 3.7 MB). Free memory was 14.8 MB in the beginning and 27.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2531.02 ms. Allocated memory was 56.1 MB in the beginning and 57.1 MB in the end (delta: 1.0 MB). Free memory was 27.0 MB in the beginning and 5.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. * Witness Printer took 6.01 ms. Allocated memory is still 57.1 MB. Free memory was 5.5 MB in the beginning and 5.1 MB in the end (delta: 414.9 kB). Peak memory consumption was 414.9 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 964]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L968] double d, q, r; [L969] q = __VERIFIER_nondet_double() [L3] COND FALSE !(!cond) [L971] d=q [L972] r=d+0 [L973] COND TRUE !(r==d) [L964] COND FALSE !(0) [L964] __assert_fail ("0", "float8.c", 8, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 1 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, 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...