./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_unwindbound5.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 ce929d4b8e516d9e6e8f9406197408f50e5e07a2a68710af0cc8588994ada67a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:44:06,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:44:06,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:44:07,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:44:07,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:44:07,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:44:07,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:44:07,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:44:07,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:44:07,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:44:07,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:44:07,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:44:07,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:44:07,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:44:07,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:44:07,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:44:07,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:44:07,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:44:07,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:44:07,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:44:07,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:44:07,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:44:07,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:44:07,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:44:07,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:44:07,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:44:07,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:44:07,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:44:07,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:44:07,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:44:07,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:44:07,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:44:07,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:44:07,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:44:07,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:44:07,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:44:07,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:44:07,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:44:07,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:44:07,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:44:07,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:44:07,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:44:07,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:44:07,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:44:07,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:44:07,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:44:07,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:44:07,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:44:07,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:44:07,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:44:07,108 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:44:07,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:44:07,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:44:07,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:44:07,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:44:07,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:44:07,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:44:07,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:44:07,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:44:07,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:44:07,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:44:07,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:44:07,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:44:07,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:44:07,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:44:07,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:44:07,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:44:07,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:44:07,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:44:07,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:44:07,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:44:07,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:44:07,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:44:07,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:44:07,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:44:07,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:44:07,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce929d4b8e516d9e6e8f9406197408f50e5e07a2a68710af0cc8588994ada67a [2021-12-21 12:44:07,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:44:07,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:44:07,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:44:07,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:44:07,368 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:44:07,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound5.i [2021-12-21 12:44:07,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a92e5e16/2c2a77a903da41c4ab24e157ae27642c/FLAG1cd1d06f1 [2021-12-21 12:44:07,782 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:44:07,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound5.i [2021-12-21 12:44:07,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a92e5e16/2c2a77a903da41c4ab24e157ae27642c/FLAG1cd1d06f1 [2021-12-21 12:44:08,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a92e5e16/2c2a77a903da41c4ab24e157ae27642c [2021-12-21 12:44:08,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:44:08,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:44:08,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:44:08,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:44:08,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:44:08,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:08" (1/1) ... [2021-12-21 12:44:08,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f42da76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:08, skipping insertion in model container [2021-12-21 12:44:08,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:08" (1/1) ... [2021-12-21 12:44:08,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:44:08,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:44:08,359 WARN L230 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_unwindbound5.i[948,961] [2021-12-21 12:44:08,370 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:1792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1434) 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:730) 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:1385) 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:1069) 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:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1456) 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:3268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:595) 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) [2021-12-21 12:44:08,374 INFO L158 Benchmark]: Toolchain (without parser) took 176.37ms. Allocated memory is still 92.3MB. Free memory was 61.6MB in the beginning and 71.0MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:44:08,375 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 75.5MB. Free memory was 46.6MB in the beginning and 46.5MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:44:08,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.36ms. Allocated memory is still 92.3MB. Free memory was 61.2MB in the beginning and 71.0MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:44:08,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 75.5MB. Free memory was 46.6MB in the beginning and 46.5MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.36ms. Allocated memory is still 92.3MB. Free memory was 61.2MB in the beginning and 71.0MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_unwindbound5.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 ce929d4b8e516d9e6e8f9406197408f50e5e07a2a68710af0cc8588994ada67a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:44:10,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:44:10,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:44:10,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:44:10,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:44:10,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:44:10,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:44:10,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:44:10,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:44:10,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:44:10,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:44:10,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:44:10,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:44:10,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:44:10,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:44:10,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:44:10,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:44:10,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:44:10,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:44:10,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:44:10,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:44:10,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:44:10,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:44:10,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:44:10,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:44:10,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:44:10,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:44:10,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:44:10,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:44:10,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:44:10,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:44:10,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:44:10,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:44:10,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:44:10,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:44:10,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:44:10,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:44:10,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:44:10,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:44:10,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:44:10,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:44:10,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 12:44:10,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:44:10,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:44:10,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:44:10,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:44:10,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:44:10,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:44:10,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:44:10,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:44:10,277 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:44:10,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:44:10,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:44:10,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:44:10,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:44:10,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:44:10,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:44:10,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:44:10,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 12:44:10,280 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 12:44:10,280 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 12:44:10,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:44:10,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:44:10,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:44:10,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:44:10,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:44:10,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:44:10,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:44:10,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:44:10,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:44:10,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:44:10,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:44:10,282 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 12:44:10,282 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 12:44:10,283 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:44:10,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:44:10,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:44:10,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:44:10,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 12:44:10,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce929d4b8e516d9e6e8f9406197408f50e5e07a2a68710af0cc8588994ada67a [2021-12-21 12:44:10,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:44:10,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:44:10,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:44:10,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:44:10,589 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:44:10,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound5.i [2021-12-21 12:44:10,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f0c587b/e38dd825b5bb4af6a40d9a6f76bac45b/FLAG8cd00f7ef [2021-12-21 12:44:11,083 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:44:11,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound5.i [2021-12-21 12:44:11,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f0c587b/e38dd825b5bb4af6a40d9a6f76bac45b/FLAG8cd00f7ef [2021-12-21 12:44:11,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f0c587b/e38dd825b5bb4af6a40d9a6f76bac45b [2021-12-21 12:44:11,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:44:11,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:44:11,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:44:11,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:44:11,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:44:11,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b885f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11, skipping insertion in model container [2021-12-21 12:44:11,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:44:11,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:44:11,631 WARN L230 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_unwindbound5.i[948,961] [2021-12-21 12:44:11,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:44:11,695 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:44:11,735 WARN L230 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_unwindbound5.i[948,961] [2021-12-21 12:44:11,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:44:11,769 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:44:11,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11 WrapperNode [2021-12-21 12:44:11,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:44:11,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:44:11,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:44:11,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:44:11,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,819 INFO L137 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2021-12-21 12:44:11,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:44:11,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:44:11,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:44:11,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:44:11,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:44:11,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:44:11,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:44:11,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:44:11,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (1/1) ... [2021-12-21 12:44:11,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:44:11,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:44:11,909 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) [2021-12-21 12:44:11,939 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 [2021-12-21 12:44:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:44:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 12:44:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 12:44:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 12:44:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:44:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:44:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:44:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:44:12,016 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:44:12,019 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:44:14,985 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:44:14,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:44:14,993 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:44:14,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:44:14 BoogieIcfgContainer [2021-12-21 12:44:14,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:44:14,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:44:14,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:44:14,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:44:14,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:44:11" (1/3) ... [2021-12-21 12:44:14,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e96bee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:44:14, skipping insertion in model container [2021-12-21 12:44:14,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:11" (2/3) ... [2021-12-21 12:44:15,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e96bee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:44:15, skipping insertion in model container [2021-12-21 12:44:15,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:44:14" (3/3) ... [2021-12-21 12:44:15,001 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound5.i [2021-12-21 12:44:15,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:44:15,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:44:15,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:44:15,049 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-21 12:44:15,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:44:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 12:44:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 12:44:15,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:44:15,067 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:44:15,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:44:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:44:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1511169482, now seen corresponding path program 1 times [2021-12-21 12:44:15,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:44:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341993644] [2021-12-21 12:44:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:44:15,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:44:15,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:44:15,093 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) [2021-12-21 12:44:15,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 12:44:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:44:15,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 12:44:15,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:44:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:44:15,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:44:15,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:44:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341993644] [2021-12-21 12:44:15,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341993644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:44:15,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:44:15,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:44:15,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632266426] [2021-12-21 12:44:15,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:44:15,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:44:15,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:44:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:44:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:44:15,664 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 12:44:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:44:15,685 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-12-21 12:44:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:44:15,687 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-12-21 12:44:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:44:15,693 INFO L225 Difference]: With dead ends: 55 [2021-12-21 12:44:15,693 INFO L226 Difference]: Without dead ends: 25 [2021-12-21 12:44:15,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:44:15,699 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:44:15,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:44:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-21 12:44:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-21 12:44:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 12:44:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-12-21 12:44:15,735 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 19 [2021-12-21 12:44:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:44:15,736 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-12-21 12:44:15,736 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 12:44:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-12-21 12:44:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 12:44:15,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:44:15,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:44:15,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-21 12:44:15,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:44:15,948 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:44:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:44:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1110907126, now seen corresponding path program 1 times [2021-12-21 12:44:15,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:44:15,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641563910] [2021-12-21 12:44:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:44:15,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:44:15,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:44:15,951 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) [2021-12-21 12:44:15,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process