./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_1.5.800.v20200727-1323.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/nla-digbench-scaling/knuth_valuebound2.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 686d566c6ff0ffccceaf20f59a35dc281118392a ................................................................................................................................................................ 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_1.5.800.v20200727-1323.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/nla-digbench-scaling/knuth_valuebound2.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 686d566c6ff0ffccceaf20f59a35dc281118392a ......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 07:03:08,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 07:03:08,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 07:03:08,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 07:03:08,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 07:03:08,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 07:03:08,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 07:03:08,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 07:03:08,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 07:03:08,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 07:03:08,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 07:03:08,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 07:03:08,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 07:03:08,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 07:03:08,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 07:03:08,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 07:03:08,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 07:03:08,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 07:03:08,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 07:03:08,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 07:03:08,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 07:03:08,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 07:03:08,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 07:03:08,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 07:03:08,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 07:03:08,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 07:03:08,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 07:03:08,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 07:03:08,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 07:03:08,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 07:03:08,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 07:03:08,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 07:03:08,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 07:03:08,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 07:03:08,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 07:03:08,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 07:03:08,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 07:03:08,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 07:03:08,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 07:03:08,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 07:03:08,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 07:03:08,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 07:03:08,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 07:03:08,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 07:03:08,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 07:03:08,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 07:03:08,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 07:03:08,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 07:03:08,498 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 07:03:08,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 07:03:08,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 07:03:08,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 07:03:08,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 07:03:08,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 07:03:08,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 07:03:08,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 07:03:08,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 07:03:08,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 07:03:08,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 07:03:08,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 07:03:08,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 07:03:08,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 07:03:08,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 07:03:08,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 07:03:08,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 07:03:08,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 07:03:08,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 07:03:08,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 07:03:08,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 07:03:08,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 07:03:08,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 07:03:08,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 07:03:08,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 686d566c6ff0ffccceaf20f59a35dc281118392a [2021-08-26 07:03:08,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 07:03:08,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 07:03:08,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 07:03:08,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 07:03:08,780 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 07:03:08,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2021-08-26 07:03:08,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c66308a/5f7f7fa63e3846b2a5aa61083b70c6ac/FLAG5c9ad9896 [2021-08-26 07:03:09,194 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 07:03:09,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2021-08-26 07:03:09,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c66308a/5f7f7fa63e3846b2a5aa61083b70c6ac/FLAG5c9ad9896 [2021-08-26 07:03:09,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85c66308a/5f7f7fa63e3846b2a5aa61083b70c6ac [2021-08-26 07:03:09,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 07:03:09,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 07:03:09,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 07:03:09,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 07:03:09,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 07:03:09,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:03:09" (1/1) ... [2021-08-26 07:03:09,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159f7b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:09, skipping insertion in model container [2021-08-26 07:03:09,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:03:09" (1/1) ... [2021-08-26 07:03:09,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 07:03:09,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 07:03:09,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[956,969] [2021-08-26 07:03:09,342 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: sqrt 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:1694) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) 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:713) 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:1359) 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:1052) 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:1430) 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:3219) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2299) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:580) 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:63) [2021-08-26 07:03:09,345 INFO L168 Benchmark]: Toolchain (without parser) took 126.08 ms. Allocated memory is still 56.6 MB. Free memory was 35.8 MB in the beginning and 27.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:09,346 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 07:03:09,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.51 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 27.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:09,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 124.51 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 27.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: 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 0.2.1-dev-20ed64e [2021-08-26 07:03:10,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 07:03:10,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 07:03:10,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 07:03:10,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 07:03:10,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 07:03:10,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 07:03:10,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 07:03:10,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 07:03:11,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 07:03:11,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 07:03:11,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 07:03:11,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 07:03:11,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 07:03:11,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 07:03:11,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 07:03:11,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 07:03:11,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 07:03:11,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 07:03:11,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 07:03:11,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 07:03:11,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 07:03:11,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 07:03:11,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 07:03:11,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 07:03:11,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 07:03:11,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 07:03:11,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 07:03:11,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 07:03:11,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 07:03:11,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 07:03:11,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 07:03:11,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 07:03:11,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 07:03:11,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 07:03:11,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 07:03:11,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 07:03:11,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 07:03:11,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 07:03:11,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 07:03:11,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 07:03:11,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 07:03:11,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 07:03:11,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 07:03:11,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 07:03:11,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 07:03:11,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 07:03:11,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 07:03:11,066 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 07:03:11,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 07:03:11,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 07:03:11,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 07:03:11,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 07:03:11,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 07:03:11,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 07:03:11,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 07:03:11,068 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 07:03:11,068 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 07:03:11,068 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 07:03:11,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 07:03:11,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 07:03:11,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 07:03:11,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 07:03:11,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 07:03:11,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 07:03:11,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 07:03:11,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 07:03:11,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 07:03:11,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 07:03:11,078 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 07:03:11,078 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 07:03:11,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 07:03:11,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 07:03:11,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 07:03:11,079 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 686d566c6ff0ffccceaf20f59a35dc281118392a [2021-08-26 07:03:11,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 07:03:11,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 07:03:11,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 07:03:11,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 07:03:11,341 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 07:03:11,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2021-08-26 07:03:11,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/251350e06/1f515b6dca78405d948a70b59ab7fa23/FLAGd0d7e9f85 [2021-08-26 07:03:11,761 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 07:03:11,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2021-08-26 07:03:11,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/251350e06/1f515b6dca78405d948a70b59ab7fa23/FLAGd0d7e9f85 [2021-08-26 07:03:11,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/251350e06/1f515b6dca78405d948a70b59ab7fa23 [2021-08-26 07:03:11,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 07:03:11,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 07:03:11,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 07:03:11,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 07:03:11,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 07:03:11,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:11,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfdc004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11, skipping insertion in model container [2021-08-26 07:03:11,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:11,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 07:03:11,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 07:03:11,894 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[956,969] [2021-08-26 07:03:11,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 07:03:11,923 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 07:03:11,936 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[956,969] [2021-08-26 07:03:11,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 07:03:11,969 INFO L208 MainTranslator]: Completed translation [2021-08-26 07:03:11,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11 WrapperNode [2021-08-26 07:03:11,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 07:03:11,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 07:03:11,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 07:03:11,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 07:03:11,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:11,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 07:03:12,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 07:03:12,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 07:03:12,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 07:03:12,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 07:03:12,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 07:03:12,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 07:03:12,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 07:03:12,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (1/1) ... [2021-08-26 07:03:12,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 07:03:12,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 07:03:12,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 07:03:12,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 07:03:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 07:03:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 07:03:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 07:03:12,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 07:03:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-08-26 07:03:15,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 07:03:15,328 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-08-26 07:03:15,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:03:15 BoogieIcfgContainer [2021-08-26 07:03:15,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 07:03:15,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 07:03:15,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 07:03:15,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 07:03:15,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:03:11" (1/3) ... [2021-08-26 07:03:15,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d0ea9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:03:15, skipping insertion in model container [2021-08-26 07:03:15,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:03:11" (2/3) ... [2021-08-26 07:03:15,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d0ea9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:03:15, skipping insertion in model container [2021-08-26 07:03:15,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:03:15" (3/3) ... [2021-08-26 07:03:15,336 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound2.i [2021-08-26 07:03:15,339 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 07:03:15,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-26 07:03:15,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 07:03:15,383 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 07:03:15,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-26 07:03:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:03:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 07:03:15,411 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:03:15,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:03:15,412 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 07:03:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:03:15,416 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-08-26 07:03:15,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 07:03:15,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429625183] [2021-08-26 07:03:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:03:15,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 07:03:15,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 07:03:15,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 07:03:15,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 07:03:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:03:15,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 07:03:15,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:03:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:03:15,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 07:03:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:03:16,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 07:03:16,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429625183] [2021-08-26 07:03:16,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429625183] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 07:03:16,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 07:03:16,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 07:03:16,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545908589] [2021-08-26 07:03:16,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 07:03:16,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 07:03:16,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 07:03:16,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 07:03:16,074 INFO L87 Difference]: Start difference. First operand has 34 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:03:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:03:16,083 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2021-08-26 07:03:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 07:03:16,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 07:03:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:03:16,089 INFO L225 Difference]: With dead ends: 65 [2021-08-26 07:03:16,089 INFO L226 Difference]: Without dead ends: 30 [2021-08-26 07:03:16,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 07:03:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-26 07:03:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-26 07:03:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:03:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-08-26 07:03:16,108 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-08-26 07:03:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:03:16,108 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-08-26 07:03:16,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:03:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-08-26 07:03:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 07:03:16,109 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 07:03:16,109 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 07:03:16,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 07:03:16,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 07:03:16,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-08-26 07:03:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 07:03:16,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-08-26 07:03:16,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 07:03:16,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987075195] [2021-08-26 07:03:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 07:03:16,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 07:03:16,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 07:03:16,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 07:03:16,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 07:03:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 07:03:16,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 07:03:16,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 07:03:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:03:17,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 07:03:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 07:03:18,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 07:03:18,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987075195] [2021-08-26 07:03:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987075195] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 07:03:18,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 07:03:18,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-08-26 07:03:18,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928683789] [2021-08-26 07:03:18,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 07:03:18,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 07:03:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 07:03:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 07:03:18,075 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:03:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 07:03:18,696 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-08-26 07:03:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 07:03:18,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 07:03:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 07:03:18,696 INFO L225 Difference]: With dead ends: 30 [2021-08-26 07:03:18,696 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 07:03:18,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1094.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 07:03:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 07:03:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 07:03:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:03:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 07:03:18,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-08-26 07:03:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 07:03:18,697 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 07:03:18,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 07:03:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 07:03:18,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 07:03:18,699 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 07:03:18,700 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 07:03:18,700 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 07:03:18,700 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 07:03:18,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 07:03:18,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 07:03:18,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 07:03:18,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:03:18,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:03:18,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:03:18,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:03:18,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:03:18,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 07:03:19,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-08-26 07:03:19,111 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-08-26 07:03:19,111 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: false [2021-08-26 07:03:19,112 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-08-26 07:03:19,112 INFO L853 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: false [2021-08-26 07:03:19,113 INFO L857 garLoopResultBuilder]: For program point L19-6(lines 19 22) no Hoare annotation was computed. [2021-08-26 07:03:19,113 INFO L853 garLoopResultBuilder]: At program point L19-8(lines 18 24) the Hoare annotation is: false [2021-08-26 07:03:19,113 INFO L857 garLoopResultBuilder]: For program point L19-9(lines 19 22) no Hoare annotation was computed. [2021-08-26 07:03:19,113 INFO L853 garLoopResultBuilder]: At program point L19-11(line 46) the Hoare annotation is: false [2021-08-26 07:03:19,113 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 07:03:19,113 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 07:03:19,113 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 70) no Hoare annotation was computed. [2021-08-26 07:03:19,113 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-08-26 07:03:19,114 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-08-26 07:03:19,114 INFO L857 garLoopResultBuilder]: For program point L20-2(lines 20 21) no Hoare annotation was computed. [2021-08-26 07:03:19,114 INFO L857 garLoopResultBuilder]: For program point L20-3(lines 20 21) no Hoare annotation was computed. [2021-08-26 07:03:19,114 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-08-26 07:03:19,114 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 70) no Hoare annotation was computed. [2021-08-26 07:03:19,115 INFO L860 garLoopResultBuilder]: At program point L72(lines 26 73) the Hoare annotation is: true [2021-08-26 07:03:19,115 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-08-26 07:03:19,115 INFO L857 garLoopResultBuilder]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2021-08-26 07:03:19,115 INFO L857 garLoopResultBuilder]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2021-08-26 07:03:19,115 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2021-08-26 07:03:19,116 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 07:03:19,116 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-08-26 07:03:19,116 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-08-26 07:03:19,117 INFO L857 garLoopResultBuilder]: For program point L16-2(line 16) no Hoare annotation was computed. [2021-08-26 07:03:19,117 INFO L857 garLoopResultBuilder]: For program point L16-4(line 16) no Hoare annotation was computed. [2021-08-26 07:03:19,118 INFO L857 garLoopResultBuilder]: For program point L16-6(line 16) no Hoare annotation was computed. [2021-08-26 07:03:19,118 INFO L857 garLoopResultBuilder]: For program point L41-2(lines 41 71) no Hoare annotation was computed. [2021-08-26 07:03:19,118 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 07:03:19,121 INFO L857 garLoopResultBuilder]: For program point L58(lines 58 70) no Hoare annotation was computed. [2021-08-26 07:03:19,121 INFO L853 garLoopResultBuilder]: At program point L58-2(lines 41 71) the Hoare annotation is: false [2021-08-26 07:03:19,121 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-08-26 07:03:19,126 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 07:03:19,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 07:03:19 BoogieIcfgContainer [2021-08-26 07:03:19,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 07:03:19,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 07:03:19,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 07:03:19,132 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 07:03:19,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:03:15" (3/4) ... [2021-08-26 07:03:19,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 07:03:19,144 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-08-26 07:03:19,144 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 07:03:19,145 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 07:03:19,145 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 07:03:19,192 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 07:03:19,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 07:03:19,194 INFO L168 Benchmark]: Toolchain (without parser) took 7413.94 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.8 MB in the beginning and 29.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:19,194 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 07:03:19,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.18 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.6 MB in the beginning and 55.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:19,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 73.4 MB. Free memory was 55.7 MB in the beginning and 53.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:19,195 INFO L168 Benchmark]: Boogie Preprocessor took 50.20 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 07:03:19,195 INFO L168 Benchmark]: RCFGBuilder took 3268.30 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 55.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:19,195 INFO L168 Benchmark]: TraceAbstraction took 3798.60 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 33.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:19,196 INFO L168 Benchmark]: Witness Printer took 60.02 ms. Allocated memory is still 73.4 MB. Free memory was 33.3 MB in the beginning and 29.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 07:03:19,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 190.18 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.6 MB in the beginning and 55.7 MB in the end (delta: -24.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 73.4 MB. Free memory was 55.7 MB in the beginning and 53.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.20 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 3268.30 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 55.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3798.60 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 33.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.02 ms. Allocated memory is still 73.4 MB. Free memory was 33.3 MB in the beginning and 29.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3747.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 17.2ms, AutomataDifference: 647.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 185.2ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 5 SDslu, 1 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 170.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1094.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 7 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 36.3ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 142.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.4ms SsaConstructionTime, 354.6ms SatisfiabilityAnalysisTime, 1940.0ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 85 SizeOfPredicates, 4 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 07:03:19,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...