./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.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-rounding1.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 91c18909fa64fb894260d901851992225c0131b1 ....................................................................................................................................................... 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-rounding1.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 91c18909fa64fb894260d901851992225c0131b1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 00:15:29,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:29,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:29,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:29,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:29,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:29,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:29,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:29,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:29,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:29,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:29,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:29,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:29,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:29,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:29,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:29,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:29,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:29,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:29,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:29,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:29,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:29,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:29,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:29,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:29,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:29,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:29,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:29,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:29,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:29,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:29,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:29,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:29,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:29,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:29,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:29,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:29,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:29,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:29,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:29,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:29,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:15:29,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:29,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:29,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:29,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:29,223 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:29,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:29,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:29,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:15:29,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:29,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:29,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:29,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:29,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:29,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:29,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:29,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:29,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:29,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:29,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:29,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:29,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:29,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:29,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:29,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:29,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:29,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:15:29,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:15:29,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:29,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:29,231 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 -> 91c18909fa64fb894260d901851992225c0131b1 [2020-10-20 00:15:29,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:29,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:29,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:29,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:29,448 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:29,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2020-10-20 00:15:29,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e67510a/619b5bd4e31042e5a1f908e741545e84/FLAGfe938e6f4 [2020-10-20 00:15:30,029 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:30,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2020-10-20 00:15:30,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e67510a/619b5bd4e31042e5a1f908e741545e84/FLAGfe938e6f4 [2020-10-20 00:15:30,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e67510a/619b5bd4e31042e5a1f908e741545e84 [2020-10-20 00:15:30,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:30,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:30,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:30,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:30,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:30,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d59dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:30, skipping insertion in model container [2020-10-20 00:15:30,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:30" (1/1) ... [2020-10-20 00:15:30,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:30,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:30,949 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: fesetround not supported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBuiltinFesetround(IntegerTranslation.java:959) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleBuiltinFesetround(StandardFunctionHandler.java:1382) 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: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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 00:15:30,956 INFO L168 Benchmark]: Toolchain (without parser) took 598.48 ms. Allocated memory was 36.7 MB in the beginning and 45.1 MB in the end (delta: 8.4 MB). Free memory was 9.0 MB in the beginning and 26.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:30,958 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 36.7 MB. Free memory was 15.9 MB in the beginning and 15.9 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:30,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.80 ms. Allocated memory was 36.7 MB in the beginning and 45.1 MB in the end (delta: 8.4 MB). Free memory was 8.1 MB in the beginning and 26.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:30,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 36.7 MB. Free memory was 15.9 MB in the beginning and 15.9 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 590.80 ms. Allocated memory was 36.7 MB in the beginning and 45.1 MB in the end (delta: 8.4 MB). Free memory was 8.1 MB in the beginning and 26.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: fesetround not supported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: fesetround not supported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBuiltinFesetround(IntegerTranslation.java:959) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:15:33,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:15:33,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:15:33,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:15:33,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:15:33,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:15:33,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:15:33,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:15:33,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:15:33,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:15:33,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:15:33,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:15:33,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:15:33,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:15:33,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:15:33,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:15:33,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:15:33,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:15:33,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:15:33,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:15:33,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:15:33,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:15:33,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:15:33,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:15:33,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:15:33,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:15:33,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:15:33,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:15:33,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:15:33,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:15:33,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:15:33,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:15:33,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:15:33,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:15:33,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:15:33,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:15:33,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:15:33,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:15:33,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:15:33,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:15:33,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:15:33,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:15:33,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:15:33,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:15:33,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:15:33,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:15:33,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:15:33,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:15:33,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:15:33,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:15:33,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:15:33,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:15:33,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:15:33,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:15:33,163 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:15:33,163 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:15:33,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:15:33,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:15:33,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:15:33,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:15:33,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:15:33,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:15:33,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:15:33,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:15:33,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:33,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:15:33,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:15:33,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:15:33,166 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:15:33,166 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:15:33,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:15:33,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:15:33,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:15:33,167 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 -> 91c18909fa64fb894260d901851992225c0131b1 [2020-10-20 00:15:33,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:15:33,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:15:33,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:15:33,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:15:33,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:15:33,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2020-10-20 00:15:33,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca905fc5/809e24f86a4f4dddbe4e9d41b575489d/FLAG8f90177ac [2020-10-20 00:15:34,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:15:34,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-rounding1.i [2020-10-20 00:15:34,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca905fc5/809e24f86a4f4dddbe4e9d41b575489d/FLAG8f90177ac [2020-10-20 00:15:34,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca905fc5/809e24f86a4f4dddbe4e9d41b575489d [2020-10-20 00:15:34,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:15:34,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:15:34,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:34,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:15:34,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:15:34,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:34" (1/1) ... [2020-10-20 00:15:34,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a19608e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:34, skipping insertion in model container [2020-10-20 00:15:34,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:15:34" (1/1) ... [2020-10-20 00:15:34,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:15:34,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:15:35,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:35,334 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:15:35,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:15:35,780 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:15:35,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35 WrapperNode [2020-10-20 00:15:35,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:15:35,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:35,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:15:35,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:15:35,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:15:35,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:15:35,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:15:35,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:15:35,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... [2020-10-20 00:15:35,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:15:35,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:15:35,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:15:35,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:15:35,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:15:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:15:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:15:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:15:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:15:36,460 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:15:36,461 INFO L298 CfgBuilder]: Removed 28 assume(true) statements. [2020-10-20 00:15:36,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:36 BoogieIcfgContainer [2020-10-20 00:15:36,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:15:36,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:15:36,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:15:36,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:15:36,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:15:34" (1/3) ... [2020-10-20 00:15:36,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5856d6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:36, skipping insertion in model container [2020-10-20 00:15:36,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:15:35" (2/3) ... [2020-10-20 00:15:36,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5856d6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:15:36, skipping insertion in model container [2020-10-20 00:15:36,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:36" (3/3) ... [2020-10-20 00:15:36,473 INFO L111 eAbstractionObserver]: Analyzing ICFG float-rounding1.i [2020-10-20 00:15:36,485 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:15:36,492 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 00:15:36,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 00:15:36,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:15:36,526 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:15:36,526 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:15:36,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:15:36,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:15:36,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:15:36,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:15:36,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:15:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-20 00:15:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:15:36,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:36,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:36,560 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:36,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1805428198, now seen corresponding path program 1 times [2020-10-20 00:15:36,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:36,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033960512] [2020-10-20 00:15:36,579 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 00:15:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:36,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:15:36,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:36,731 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 00:15:36,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:36,743 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 00:15:36,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033960512] [2020-10-20 00:15:36,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:36,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 00:15:36,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923320307] [2020-10-20 00:15:36,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:15:36,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:36,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:15:36,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:15:36,769 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2020-10-20 00:15:36,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:36,883 INFO L93 Difference]: Finished difference Result 113 states and 162 transitions. [2020-10-20 00:15:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:15:36,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 00:15:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:36,896 INFO L225 Difference]: With dead ends: 113 [2020-10-20 00:15:36,896 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 00:15:36,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:15:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 00:15:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2020-10-20 00:15:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 00:15:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-20 00:15:36,938 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 7 [2020-10-20 00:15:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:36,938 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-20 00:15:36,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:15:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-20 00:15:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:15:36,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:36,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:37,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:15:37,148 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash 177934122, now seen corresponding path program 1 times [2020-10-20 00:15:37,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:37,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281988612] [2020-10-20 00:15:37,152 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 00:15:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:37,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:15:37,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:37,482 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 00:15:37,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:38,565 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 00:15:38,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281988612] [2020-10-20 00:15:38,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:38,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:15:38,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901587830] [2020-10-20 00:15:38,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:15:38,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:15:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:15:38,569 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2020-10-20 00:15:39,324 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-10-20 00:15:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:41,020 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-10-20 00:15:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 00:15:41,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-10-20 00:15:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:41,023 INFO L225 Difference]: With dead ends: 66 [2020-10-20 00:15:41,023 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 00:15:41,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-20 00:15:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 00:15:41,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2020-10-20 00:15:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 00:15:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-20 00:15:41,032 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 8 [2020-10-20 00:15:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:41,032 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-20 00:15:41,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:15:41,032 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-20 00:15:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:15:41,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:41,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:41,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:15:41,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:41,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:41,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1941724699, now seen corresponding path program 1 times [2020-10-20 00:15:41,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:41,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129558226] [2020-10-20 00:15:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:15:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:41,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:15:41,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:41,373 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 00:15:41,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:41,388 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 00:15:41,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129558226] [2020-10-20 00:15:41,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:41,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 00:15:41,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387520338] [2020-10-20 00:15:41,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:15:41,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:41,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:15:41,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:15:41,395 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-10-20 00:15:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:41,446 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-10-20 00:15:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:15:41,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 00:15:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:41,448 INFO L225 Difference]: With dead ends: 65 [2020-10-20 00:15:41,448 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 00:15:41,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:15:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 00:15:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 00:15:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 00:15:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 37 transitions. [2020-10-20 00:15:41,455 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 37 transitions. Word has length 13 [2020-10-20 00:15:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:41,456 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 37 transitions. [2020-10-20 00:15:41,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:15:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-10-20 00:15:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:15:41,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:41,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:41,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:15:41,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:41,666 INFO L82 PathProgramCache]: Analyzing trace with hash -745441216, now seen corresponding path program 1 times [2020-10-20 00:15:41,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:41,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821886491] [2020-10-20 00:15:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 00:15:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:41,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 00:15:41,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:41,936 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 00:15:41,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:15:43,244 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-20 00:15:43,254 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 00:15:43,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821886491] [2020-10-20 00:15:43,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:43,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:15:43,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346917787] [2020-10-20 00:15:43,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:15:43,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:15:43,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:15:43,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:15:43,257 INFO L87 Difference]: Start difference. First operand 38 states and 37 transitions. Second operand 8 states. [2020-10-20 00:15:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:15:44,251 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-10-20 00:15:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:15:44,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-20 00:15:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:15:44,257 INFO L225 Difference]: With dead ends: 38 [2020-10-20 00:15:44,257 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 00:15:44,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:15:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 00:15:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-20 00:15:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 00:15:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2020-10-20 00:15:44,263 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 15 [2020-10-20 00:15:44,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:15:44,264 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2020-10-20 00:15:44,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:15:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2020-10-20 00:15:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 00:15:44,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:15:44,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:15:44,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:15:44,475 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:15:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:15:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1207633360, now seen corresponding path program 1 times [2020-10-20 00:15:44,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:15:44,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030268500] [2020-10-20 00:15:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 00:15:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:44,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 00:15:44,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:44,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030268500] [2020-10-20 00:15:44,642 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:15:44,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [592532948] [2020-10-20 00:15:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:15:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:45,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 00:15:45,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:45,070 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:15:45,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801376379] [2020-10-20 00:15:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:15:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:15:45,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-20 00:15:45,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:15:45,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:15:45,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:15:45,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:15:45,312 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:15:45,313 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:15:45,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:15:45,937 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:15:45,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:15:45 BoogieIcfgContainer [2020-10-20 00:15:45,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:15:45,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:15:45,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:15:45,939 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:15:45,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:15:36" (3/4) ... [2020-10-20 00:15:45,942 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:15:45,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:15:45,944 INFO L168 Benchmark]: Toolchain (without parser) took 11559.71 ms. Allocated memory was 36.7 MB in the beginning and 65.5 MB in the end (delta: 28.8 MB). Free memory was 18.2 MB in the beginning and 40.8 MB in the end (delta: -22.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:45,945 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 11.8 MB in the beginning and 11.7 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:15:45,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1389.97 ms. Allocated memory was 36.7 MB in the beginning and 55.1 MB in the end (delta: 18.4 MB). Free memory was 17.3 MB in the beginning and 14.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:45,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.46 ms. Allocated memory is still 55.1 MB. Free memory was 14.7 MB in the beginning and 11.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:45,948 INFO L168 Benchmark]: Boogie Preprocessor took 39.33 ms. Allocated memory is still 55.1 MB. Free memory was 11.5 MB in the beginning and 37.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:45,948 INFO L168 Benchmark]: RCFGBuilder took 574.41 ms. Allocated memory is still 55.1 MB. Free memory was 37.0 MB in the beginning and 14.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:15:45,949 INFO L168 Benchmark]: TraceAbstraction took 9473.70 ms. Allocated memory was 55.1 MB in the beginning and 65.5 MB in the end (delta: 10.5 MB). Free memory was 14.4 MB in the beginning and 40.8 MB in the end (delta: -26.5 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:15:45,950 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 65.5 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 14.3 GB. [2020-10-20 00:15:45,955 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 33.6 MB. Free memory was 11.8 MB in the beginning and 11.7 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 1389.97 ms. Allocated memory was 36.7 MB in the beginning and 55.1 MB in the end (delta: 18.4 MB). Free memory was 17.3 MB in the beginning and 14.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 67.46 ms. Allocated memory is still 55.1 MB. Free memory was 14.7 MB in the beginning and 11.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 39.33 ms. Allocated memory is still 55.1 MB. Free memory was 11.5 MB in the beginning and 37.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 574.41 ms. Allocated memory is still 55.1 MB. Free memory was 37.0 MB in the beginning and 14.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 9473.70 ms. Allocated memory was 55.1 MB in the beginning and 65.5 MB in the end (delta: 10.5 MB). Free memory was 14.4 MB in the beginning and 40.8 MB in the end (delta: -26.5 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.17 ms. Allocated memory is still 65.5 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 24 B). Peak memory consumption was 24 B. 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: [L1119] float f1 = 0x1.0p+0; [L1120] float f2 = 0x1.8p-24; [L1102] float roundToNearestSum = f1 + f2; [L1103] COND FALSE !(!(roundToNearestSum == 0x1.000002p+0f)) [L1109] float roundDownSum = f1 + f2; [L1110] COND FALSE !(!(roundDownSum == 0x1.0p+0f)) [L1126] float f3 = __VERIFIER_nondet_float(); [L1127] float f4 = __VERIFIER_nondet_float(); [L3] COND FALSE !(!cond) [L3] COND FALSE !(!cond) [L1102] float roundToNearestSum = f1 + f2; [L1103] COND TRUE !(roundToNearestSum == 0x1.000002p+0f) [L16] COND FALSE !(0) [L16] __assert_fail ("0", "float-rounding1.c", 7, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 9.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 124 SDtfs, 204 SDslu, 196 SDs, 0 SdLazy, 190 SolverSat, 27 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 15 QuantifiedInterpolants, 5088 SizeOfPredicates, 22 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...