./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-div1.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/float-div1.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 43afe140f1d8923ae3cc82938867c285a58a3757 ........................................................................................................................................................................ 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/float-div1.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 43afe140f1d8923ae3cc82938867c285a58a3757 ........................................................................................................................................................................................................................................................................................................... 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 00:14:59,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:14:59,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:14:59,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:14:59,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:14:59,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:14:59,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:14:59,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:14:59,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:14:59,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:14:59,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:14:59,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:14:59,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:14:59,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:14:59,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:14:59,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:14:59,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:14:59,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:14:59,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:14:59,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:14:59,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:14:59,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:14:59,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:14:59,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:14:59,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:14:59,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:14:59,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:14:59,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:14:59,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:14:59,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:14:59,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:14:59,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:14:59,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:14:59,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:14:59,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:14:59,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:14:59,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:14:59,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:14:59,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:14:59,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:14:59,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:14:59,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:14:59,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:14:59,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:14:59,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:14:59,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:14:59,730 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:14:59,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:14:59,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:14:59,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:14:59,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:14:59,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:14:59,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:14:59,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:14:59,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:14:59,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:14:59,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:14:59,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:14:59,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:14:59,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:14:59,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:14:59,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:14:59,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:14:59,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:14:59,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:14:59,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:14:59,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:14:59,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:14:59,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:14:59,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:14:59,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:14:59,737 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 -> 43afe140f1d8923ae3cc82938867c285a58a3757 [2020-10-20 00:14:59,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:14:59,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:14:59,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:14:59,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:14:59,975 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:14:59,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-10-20 00:15:00,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5adb7c36/6bcb170ac7c7452cbd1cb60a82f673f5/FLAGc633831be [2020-10-20 00:15:00,567 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:00,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-10-20 00:15:00,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5adb7c36/6bcb170ac7c7452cbd1cb60a82f673f5/FLAGc633831be [2020-10-20 00:15:00,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5adb7c36/6bcb170ac7c7452cbd1cb60a82f673f5 [2020-10-20 00:15:00,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:00,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:00,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:00,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:00,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:00,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:00" (1/1) ... [2020-10-20 00:15:00,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb8cdd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:00, skipping insertion in model container [2020-10-20 00:15:00,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:00" (1/1) ... [2020-10-20 00:15:00,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:00,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:01,544 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: fpclassify 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.base.CHandler.visit(CHandler.java:705) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) 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.base.CHandler.visit(CHandler.java:706) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:705) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 00:15:01,553 INFO L168 Benchmark]: Toolchain (without parser) took 729.24 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 18.7 MB in the beginning and 24.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:01,554 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 34.1 MB. Free memory was 12.6 MB in the beginning and 12.5 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:01,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.88 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 17.9 MB in the beginning and 24.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:01,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 34.1 MB. Free memory was 12.6 MB in the beginning and 12.5 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 720.88 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 17.9 MB in the beginning and 24.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 11.1 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: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: 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 00:15:03,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:03,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:03,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:03,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:03,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:03,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:03,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:03,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:03,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:03,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:03,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:03,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:03,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:03,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:03,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:03,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:03,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:03,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:03,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:03,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:03,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:03,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:03,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:03,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:03,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:03,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:03,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:03,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:03,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:03,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:03,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:03,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:03,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:03,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:03,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:03,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:03,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:03,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:03,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:03,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:03,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:15:03,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:03,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:03,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:03,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:03,524 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:03,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:03,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:03,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:03,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:03,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:03,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:03,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:03,527 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:15:03,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:15:03,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:03,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:03,529 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:03,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:03,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:03,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:03,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:03,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:03,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:03,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:03,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:03,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:03,532 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:15:03,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:15:03,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:03,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:03,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:15:03,533 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 -> 43afe140f1d8923ae3cc82938867c285a58a3757 [2020-10-20 00:15:03,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:03,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:03,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:03,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:03,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:03,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-10-20 00:15:03,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d49eeede/653d34b95391460b9f43fc1c11069776/FLAG665f944ab [2020-10-20 00:15:04,546 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:04,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-10-20 00:15:04,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d49eeede/653d34b95391460b9f43fc1c11069776/FLAG665f944ab [2020-10-20 00:15:04,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d49eeede/653d34b95391460b9f43fc1c11069776 [2020-10-20 00:15:04,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:04,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:04,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:04,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:04,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:04,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:04" (1/1) ... [2020-10-20 00:15:04,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a08707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:04, skipping insertion in model container [2020-10-20 00:15:04,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:04" (1/1) ... [2020-10-20 00:15:04,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:04,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:05,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:05,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:05,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:05,872 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:05,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05 WrapperNode [2020-10-20 00:15:05,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:05,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:05,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:05,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:05,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:05,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:05,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:05,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:05,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:05,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (1/1) ... [2020-10-20 00:15:06,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:06,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:06,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:06,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:06,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (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 00:15:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:15:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:06,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:08,801 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:08,802 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-20 00:15:08,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:08 BoogieIcfgContainer [2020-10-20 00:15:08,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:08,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:08,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:08,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:08,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:04" (1/3) ... [2020-10-20 00:15:08,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e0ff4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:08, skipping insertion in model container [2020-10-20 00:15:08,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:05" (2/3) ... [2020-10-20 00:15:08,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e0ff4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:08, skipping insertion in model container [2020-10-20 00:15:08,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:08" (3/3) ... [2020-10-20 00:15:08,813 INFO L111 eAbstractionObserver]: Analyzing ICFG float-div1.i [2020-10-20 00:15:08,825 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:08,833 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 00:15:08,848 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 00:15:08,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:08,873 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:08,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:08,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:08,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:08,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:08,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:08,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-20 00:15:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:15:08,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:08,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:08,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:08,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1804966438, now seen corresponding path program 1 times [2020-10-20 00:15:08,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:08,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131262405] [2020-10-20 00:15:08,913 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 00:15:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:09,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:15:09,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:09,383 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 00:15:09,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:09,387 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 00:15:09,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131262405] [2020-10-20 00:15:09,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:09,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:15:09,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60605953] [2020-10-20 00:15:09,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:15:09,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:09,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:15:09,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:15:09,409 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-10-20 00:15:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:09,424 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2020-10-20 00:15:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:15:09,426 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:15:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:09,436 INFO L225 Difference]: With dead ends: 46 [2020-10-20 00:15:09,436 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 00:15:09,440 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 00:15:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 00:15:09,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-20 00:15:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 00:15:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-10-20 00:15:09,474 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 7 [2020-10-20 00:15:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:09,474 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-10-20 00:15:09,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:15:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-10-20 00:15:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:15:09,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:09,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:09,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:15:09,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:09,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1806813480, now seen corresponding path program 1 times [2020-10-20 00:15:09,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:09,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166324404] [2020-10-20 00:15:09,690 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 00:15:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:10,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:15:10,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:10,977 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 28 [2020-10-20 00:15:10,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166324404] [2020-10-20 00:15:10,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:15:10,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [172930240] [2020-10-20 00:15:10,996 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 00:15:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:12,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:15:12,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:12,120 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:15:12,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541841686] [2020-10-20 00:15:12,120 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 00:15:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:20,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:15:20,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:20,302 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:15:20,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:20,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:15:20,303 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:15:20,303 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:15:20,920 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 00:15:20,937 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:15:20,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:20 BoogieIcfgContainer [2020-10-20 00:15:20,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:20,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:20,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:20,938 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:20,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:08" (3/4) ... [2020-10-20 00:15:20,947 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:15:20,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:20,955 INFO L168 Benchmark]: Toolchain (without parser) took 16269.19 ms. Allocated memory was 43.5 MB in the beginning and 62.4 MB in the end (delta: 18.9 MB). Free memory was 22.0 MB in the beginning and 38.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,957 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 32.5 MB. Free memory was 11.4 MB in the beginning and 11.4 MB in the end (delta: 52.3 kB). Peak memory consumption was 52.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1181.71 ms. Allocated memory was 43.5 MB in the beginning and 56.6 MB in the end (delta: 13.1 MB). Free memory was 21.2 MB in the beginning and 29.7 MB in the end (delta: -8.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.27 ms. Allocated memory is still 56.6 MB. Free memory was 29.7 MB in the beginning and 26.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,962 INFO L168 Benchmark]: Boogie Preprocessor took 30.52 ms. Allocated memory is still 56.6 MB. Free memory was 26.9 MB in the beginning and 25.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,963 INFO L168 Benchmark]: RCFGBuilder took 2799.84 ms. Allocated memory is still 56.6 MB. Free memory was 25.3 MB in the beginning and 37.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,964 INFO L168 Benchmark]: TraceAbstraction took 12132.45 ms. Allocated memory was 56.6 MB in the beginning and 62.4 MB in the end (delta: 5.8 MB). Free memory was 37.1 MB in the beginning and 38.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,965 INFO L168 Benchmark]: Witness Printer took 14.16 ms. Allocated memory is still 62.4 MB. Free memory was 38.8 MB in the beginning and 38.2 MB in the end (delta: 672.9 kB). Peak memory consumption was 672.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:20,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 32.5 MB. Free memory was 11.4 MB in the beginning and 11.4 MB in the end (delta: 52.3 kB). Peak memory consumption was 52.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 1181.71 ms. Allocated memory was 43.5 MB in the beginning and 56.6 MB in the end (delta: 13.1 MB). Free memory was 21.2 MB in the beginning and 29.7 MB in the end (delta: -8.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 99.27 ms. Allocated memory is still 56.6 MB. Free memory was 29.7 MB in the beginning and 26.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.52 ms. Allocated memory is still 56.6 MB. Free memory was 26.9 MB in the beginning and 25.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 2799.84 ms. Allocated memory is still 56.6 MB. Free memory was 25.3 MB in the beginning and 37.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 12132.45 ms. Allocated memory was 56.6 MB in the beginning and 62.4 MB in the end (delta: 5.8 MB). Free memory was 37.1 MB in the beginning and 38.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. * Witness Printer took 14.16 ms. Allocated memory is still 62.4 MB. Free memory was 38.8 MB in the beginning and 38.2 MB in the end (delta: 672.9 kB). Peak memory consumption was 672.9 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: 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: [L396] float f, g; [L379] float target = 0x1.fffffep-3f; [L3] COND FALSE !(!cond) [L381] float secondPoint = (target / startState); [L382] float nextState = (startState + secondPoint) / 2; [L383] float oneAfter = (target / nextState); [L384] COND TRUE !(oneAfter > 0) [L16] COND FALSE !(0) [L16] __assert_fail ("0", "float-div1.c", 7, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 12.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 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=26occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 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...