./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:55:22,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:55:22,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:55:22,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:55:22,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:55:22,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:55:22,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:55:22,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:55:22,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:55:22,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:55:22,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:55:22,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:55:22,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:55:22,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:55:22,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:55:22,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:55:22,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:55:22,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:55:22,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:55:22,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:55:22,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:55:22,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:55:22,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:55:22,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:55:22,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:55:22,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:55:22,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:55:22,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:55:22,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:55:22,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:55:22,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:55:22,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:55:22,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:55:22,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:55:22,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:55:22,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:55:22,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:55:22,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:55:22,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:55:22,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:55:22,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:55:22,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:55:23,016 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:55:23,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:55:23,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:55:23,018 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:55:23,018 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:55:23,018 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:55:23,019 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:55:23,019 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:55:23,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:55:23,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:55:23,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:55:23,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:55:23,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:55:23,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:55:23,021 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:55:23,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:55:23,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:55:23,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:55:23,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:55:23,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:55:23,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:55:23,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:55:23,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:55:23,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:55:23,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:55:23,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:55:23,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:55:23,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:55:23,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:55:23,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:55:23,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:23,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:55:23,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:55:23,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:55:23,028 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:55:23,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:55:23,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:55:23,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:55:23,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:55:23,029 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b [2021-11-03 04:55:23,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:55:23,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:55:23,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:55:23,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:55:23,335 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:55:23,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-03 04:55:23,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/7924fd6e5/0cd8bf3936c042c7892fa2230fb742a7/FLAG9882d9bec [2021-11-03 04:55:23,921 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:55:23,921 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-03 04:55:23,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/7924fd6e5/0cd8bf3936c042c7892fa2230fb742a7/FLAG9882d9bec [2021-11-03 04:55:24,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/7924fd6e5/0cd8bf3936c042c7892fa2230fb742a7 [2021-11-03 04:55:24,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:55:24,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:55:24,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:24,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:55:24,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:55:24,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:24" (1/1) ... [2021-11-03 04:55:24,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65423fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:24, skipping insertion in model container [2021-11-03 04:55:24,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:24" (1/1) ... [2021-11-03 04:55:24,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:55:24,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:55:24,598 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:1691) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$42(StandardFunctionHandler.java:366) 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:1430) 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.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2000) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1629) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) 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.visit(CHandler.java:1606) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) 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:1452) 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:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) 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) [2021-11-03 04:55:24,603 INFO L168 Benchmark]: Toolchain (without parser) took 327.51 ms. Allocated memory is still 96.5 MB. Free memory was 60.8 MB in the beginning and 71.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:55:24,603 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:55:24,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.83 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 71.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:55:24,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.83 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 71.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) 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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:55:26,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:55:26,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:55:26,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:55:26,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:55:26,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:55:26,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:55:26,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:55:26,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:55:26,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:55:26,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:55:26,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:55:26,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:55:26,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:55:26,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:55:26,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:55:26,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:55:26,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:55:26,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:55:26,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:55:26,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:55:26,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:55:26,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:55:26,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:55:26,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:55:26,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:55:26,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:55:26,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:55:26,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:55:26,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:55:26,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:55:26,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:55:26,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:55:26,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:55:27,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:55:27,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:55:27,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:55:27,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:55:27,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:55:27,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:55:27,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:55:27,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:55:27,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:55:27,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:55:27,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:55:27,059 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:55:27,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:55:27,060 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:55:27,061 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:55:27,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:55:27,061 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:55:27,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:55:27,064 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:55:27,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:55:27,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:55:27,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:55:27,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:55:27,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:55:27,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:55:27,065 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:55:27,066 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:55:27,066 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:55:27,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:55:27,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:55:27,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:55:27,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:55:27,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:55:27,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:55:27,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:27,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:55:27,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:55:27,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:55:27,068 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:55:27,069 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:55:27,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:55:27,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:55:27,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:55:27,070 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b [2021-11-03 04:55:27,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:55:27,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:55:27,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:55:27,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:55:27,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:55:27,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-03 04:55:27,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/709e8ff49/a6e44de508ba4e1db95282957f59f1a9/FLAG3258a50c6 [2021-11-03 04:55:28,153 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:55:28,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-03 04:55:28,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/709e8ff49/a6e44de508ba4e1db95282957f59f1a9/FLAG3258a50c6 [2021-11-03 04:55:28,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/data/709e8ff49/a6e44de508ba4e1db95282957f59f1a9 [2021-11-03 04:55:28,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:55:28,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:55:28,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:28,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:55:28,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:55:28,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:28" (1/1) ... [2021-11-03 04:55:28,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61dbcee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:28, skipping insertion in model container [2021-11-03 04:55:28,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:28" (1/1) ... [2021-11-03 04:55:28,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:55:28,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:55:28,935 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/sv-benchmarks/c/float-newlib/float_req_bl_0880.c[15389,15402] [2021-11-03 04:55:28,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:28,960 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:55:29,108 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/sv-benchmarks/c/float-newlib/float_req_bl_0880.c[15389,15402] [2021-11-03 04:55:29,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:29,149 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:55:29,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29 WrapperNode [2021-11-03 04:55:29,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:29,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:55:29,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:55:29,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:55:29,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:55:29,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:55:29,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:55:29,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:55:29,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:55:29,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:55:29,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:55:29,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:55:29,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (1/1) ... [2021-11-03 04:55:29,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:55:29,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:55:29,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:55:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:55:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:55:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-03 04:55:29,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:55:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-03 04:55:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-03 04:55:29,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:55:29,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:55:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:55:29,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:56:02,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:56:02,744 INFO L299 CfgBuilder]: Removed 126 assume(true) statements. [2021-11-03 04:56:02,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:56:02 BoogieIcfgContainer [2021-11-03 04:56:02,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:56:02,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:56:02,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:56:02,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:56:02,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:55:28" (1/3) ... [2021-11-03 04:56:02,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c113561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:56:02, skipping insertion in model container [2021-11-03 04:56:02,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:29" (2/3) ... [2021-11-03 04:56:02,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c113561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:56:02, skipping insertion in model container [2021-11-03 04:56:02,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:56:02" (3/3) ... [2021-11-03 04:56:02,763 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0880.c [2021-11-03 04:56:02,769 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:56:02,769 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:56:02,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:56:02,841 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=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 [2021-11-03 04:56:02,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:56:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 255 states have (on average 1.7490196078431373) internal successors, (446), 256 states have internal predecessors, (446), 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) [2021-11-03 04:56:02,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 04:56:02,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:02,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:02,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:56:02,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1965724613, now seen corresponding path program 1 times [2021-11-03 04:56:02,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:02,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336597433] [2021-11-03 04:56:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:02,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:02,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:02,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:02,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:56:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:03,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:56:03,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:04,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:04,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:04,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336597433] [2021-11-03 04:56:04,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336597433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:04,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:04,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:56:04,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916149194] [2021-11-03 04:56:04,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:56:04,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:56:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:56:04,192 INFO L87 Difference]: Start difference. First operand has 257 states, 255 states have (on average 1.7490196078431373) internal successors, (446), 256 states have internal predecessors, (446), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-11-03 04:56:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:04,295 INFO L93 Difference]: Finished difference Result 511 states and 888 transitions. [2021-11-03 04:56:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:56:04,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-11-03 04:56:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:04,321 INFO L225 Difference]: With dead ends: 511 [2021-11-03 04:56:04,321 INFO L226 Difference]: Without dead ends: 253 [2021-11-03 04:56:04,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:56:04,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-03 04:56:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-03 04:56:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3492063492063493) internal successors, (340), 252 states have internal predecessors, (340), 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) [2021-11-03 04:56:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 340 transitions. [2021-11-03 04:56:04,387 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 340 transitions. Word has length 16 [2021-11-03 04:56:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:04,387 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 340 transitions. [2021-11-03 04:56:04,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-11-03 04:56:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 340 transitions. [2021-11-03 04:56:04,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 04:56:04,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:04,390 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:04,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:04,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:04,606 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:56:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1861888897, now seen corresponding path program 1 times [2021-11-03 04:56:04,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:04,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43532918] [2021-11-03 04:56:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:04,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:04,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:04,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:04,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:56:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:05,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:05,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:06,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:06,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:06,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43532918] [2021-11-03 04:56:06,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43532918] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:06,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:06,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:56:06,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132552211] [2021-11-03 04:56:06,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:06,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:06,339 INFO L87 Difference]: Start difference. First operand 253 states and 340 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-03 04:56:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:06,814 INFO L93 Difference]: Finished difference Result 487 states and 651 transitions. [2021-11-03 04:56:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:56:06,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2021-11-03 04:56:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:06,820 INFO L225 Difference]: With dead ends: 487 [2021-11-03 04:56:06,820 INFO L226 Difference]: Without dead ends: 253 [2021-11-03 04:56:06,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:56:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-03 04:56:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-03 04:56:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3412698412698412) internal successors, (338), 252 states have internal predecessors, (338), 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) [2021-11-03 04:56:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 338 transitions. [2021-11-03 04:56:06,843 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 338 transitions. Word has length 19 [2021-11-03 04:56:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:06,843 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 338 transitions. [2021-11-03 04:56:06,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-03 04:56:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 338 transitions. [2021-11-03 04:56:06,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:56:06,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:06,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:06,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:07,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:07,062 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:56:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:07,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1765794499, now seen corresponding path program 1 times [2021-11-03 04:56:07,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:07,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624262144] [2021-11-03 04:56:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:07,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:07,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:07,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:07,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:56:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:08,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 04:56:08,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:20,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:27,658 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from true [2021-11-03 04:56:53,414 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from true [2021-11-03 04:57:12,087 WARN L860 $PredicateComparison]: unable to prove that (or (bvult c_ULTIMATE.start_floor_float_~ix~6 (_ bv2139095040 32)) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) is different from true [2021-11-03 04:57:22,496 WARN L860 $PredicateComparison]: unable to prove that (or (bvult (bvand (_ bv2147483647 32) c_ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32)) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) is different from true [2021-11-03 04:57:32,942 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_floor_float_~i0~0_17 (_ BitVec 32))) (or (bvult (bvand (_ bv2147483647 32) v_ULTIMATE.start_floor_float_~i0~0_17) (_ bv2139095040 32)) (not (= c_ULTIMATE.start_floor_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 30 23) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 22 0) v_ULTIMATE.start_floor_float_~i0~0_17)))))) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) is different from true [2021-11-03 04:57:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:38,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:38,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624262144] [2021-11-03 04:57:38,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624262144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:38,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:38,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2021-11-03 04:57:38,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425005384] [2021-11-03 04:57:38,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:57:38,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:38,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:57:38,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=108, Unknown=5, NotChecked=120, Total=272 [2021-11-03 04:57:38,807 INFO L87 Difference]: Start difference. First operand 253 states and 338 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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) [2021-11-03 04:57:41,610 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (and |c_ULTIMATE.start_main_#t~short72| .cse0) (and (not .cse0) (not |c_ULTIMATE.start_main_#t~short72|))) (or (forall ((v_ULTIMATE.start_floor_float_~i0~0_17 (_ BitVec 32))) (or (bvult (bvand (_ bv2147483647 32) v_ULTIMATE.start_floor_float_~i0~0_17) (_ bv2139095040 32)) (not (= c_ULTIMATE.start_floor_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 30 23) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 22 0) v_ULTIMATE.start_floor_float_~i0~0_17)))))) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) (= c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_floor_float_~x) .cse0 (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-03 04:57:43,681 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (and |c_ULTIMATE.start_main_#t~short72| .cse0) (and (not .cse0) (not |c_ULTIMATE.start_main_#t~short72|))) (or (forall ((v_ULTIMATE.start_floor_float_~i0~0_17 (_ BitVec 32))) (or (bvult (bvand (_ bv2147483647 32) v_ULTIMATE.start_floor_float_~i0~0_17) (_ bv2139095040 32)) (not (= c_ULTIMATE.start_floor_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 30 23) v_ULTIMATE.start_floor_float_~i0~0_17) ((_ extract 22 0) v_ULTIMATE.start_floor_float_~i0~0_17)))))) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) (= c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_floor_float_~x) .cse0 (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-03 04:57:45,760 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp ((_ extract 31 31) c_ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) c_ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) c_ULTIMATE.start_floor_float_~i0~0)) c_ULTIMATE.start_main_~y~0) (or (bvult (bvand (_ bv2147483647 32) c_ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32)) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:57:47,842 WARN L860 $PredicateComparison]: unable to prove that (and (or (bvult c_ULTIMATE.start_floor_float_~ix~6 (_ bv2139095040 32)) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_floor_float_~ix~6 (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0))))) is different from true [2021-11-03 04:57:50,277 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)) c_ULTIMATE.start_main_~y~0) (not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32))))) (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~y~0 ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (fp.gt c_ULTIMATE.start_main_~y~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:57:53,247 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (exists ((ULTIMATE.start_floor_float_~i0~0 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start_floor_float_~i0~0) ((_ extract 30 23) ULTIMATE.start_floor_float_~i0~0) ((_ extract 22 0) ULTIMATE.start_floor_float_~i0~0)))) (and (= c_ULTIMATE.start_fmod_float_~x .cse1) (not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start_floor_float_~i0~0) (_ bv2139095040 32))) (fp.gt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:59:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:59:04,925 INFO L93 Difference]: Finished difference Result 461 states and 607 transitions. [2021-11-03 04:59:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:59:04,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 33 [2021-11-03 04:59:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:59:04,939 INFO L225 Difference]: With dead ends: 461 [2021-11-03 04:59:04,940 INFO L226 Difference]: Without dead ends: 263 [2021-11-03 04:59:04,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=55, Invalid=130, Unknown=11, NotChecked=310, Total=506 [2021-11-03 04:59:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-03 04:59:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-11-03 04:59:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3282442748091603) internal successors, (348), 262 states have internal predecessors, (348), 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) [2021-11-03 04:59:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 348 transitions. [2021-11-03 04:59:04,966 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 348 transitions. Word has length 33 [2021-11-03 04:59:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:59:04,966 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 348 transitions. [2021-11-03 04:59:04,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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) [2021-11-03 04:59:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 348 transitions. [2021-11-03 04:59:04,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:59:04,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:59:04,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:59:05,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:59:05,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:59:05,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:59:05,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:59:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1827834113, now seen corresponding path program 1 times [2021-11-03 04:59:05,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:59:05,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501239553] [2021-11-03 04:59:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:59:05,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:59:05,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:59:05,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:59:05,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:59:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:59:06,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 04:59:06,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:59:07,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 04:59:09,127 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 04:59:09,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 58 [2021-11-03 04:59:10,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:59:10,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 46 [2021-11-03 04:59:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:11,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:59:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:59:16,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:59:16,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501239553] [2021-11-03 04:59:16,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501239553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:59:16,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:59:16,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-03 04:59:16,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382644442] [2021-11-03 04:59:16,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 04:59:16,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:59:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 04:59:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:59:16,758 INFO L87 Difference]: Start difference. First operand 263 states and 348 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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) [2021-11-03 05:01:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:01:58,271 INFO L93 Difference]: Finished difference Result 1433 states and 2027 transitions. [2021-11-03 05:01:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 05:01:58,281 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 33 [2021-11-03 05:01:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:01:58,290 INFO L225 Difference]: With dead ends: 1433 [2021-11-03 05:01:58,291 INFO L226 Difference]: Without dead ends: 1194 [2021-11-03 05:01:58,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 05:01:58,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-03 05:01:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 278. [2021-11-03 05:01:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3140794223826715) internal successors, (364), 277 states have internal predecessors, (364), 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) [2021-11-03 05:01:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 364 transitions. [2021-11-03 05:01:58,336 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 364 transitions. Word has length 33 [2021-11-03 05:01:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:01:58,336 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 364 transitions. [2021-11-03 05:01:58,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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) [2021-11-03 05:01:58,337 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 364 transitions. [2021-11-03 05:01:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:01:58,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:01:58,339 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:01:58,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:01:58,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:01:58,550 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:01:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:01:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2135008422, now seen corresponding path program 1 times [2021-11-03 05:01:58,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:01:58,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93547477] [2021-11-03 05:01:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:01:58,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:01:58,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:01:58,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:01:58,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:01:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:01:59,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-03 05:01:59,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:00,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 05:02:02,767 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 05:02:02,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 72 [2021-11-03 05:02:03,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:02:03,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 60 [2021-11-03 05:02:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:05,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:11,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:11,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93547477] [2021-11-03 05:02:11,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93547477] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:11,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:02:11,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-03 05:02:11,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256482282] [2021-11-03 05:02:11,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 05:02:11,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 05:02:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:02:11,544 INFO L87 Difference]: Start difference. First operand 278 states and 364 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-03 05:05:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:10,187 INFO L93 Difference]: Finished difference Result 1712 states and 2436 transitions. [2021-11-03 05:05:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-03 05:05:10,198 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 34 [2021-11-03 05:05:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:10,210 INFO L225 Difference]: With dead ends: 1712 [2021-11-03 05:05:10,210 INFO L226 Difference]: Without dead ends: 1491 [2021-11-03 05:05:10,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=453, Invalid=1803, Unknown=0, NotChecked=0, Total=2256 [2021-11-03 05:05:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-11-03 05:05:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 284. [2021-11-03 05:05:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3109540636042403) internal successors, (371), 283 states have internal predecessors, (371), 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) [2021-11-03 05:05:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 371 transitions. [2021-11-03 05:05:10,251 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 371 transitions. Word has length 34 [2021-11-03 05:05:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:10,252 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 371 transitions. [2021-11-03 05:05:10,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-03 05:05:10,253 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 371 transitions. [2021-11-03 05:05:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:05:10,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:10,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:10,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:05:10,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:05:10,469 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:05:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash -305186201, now seen corresponding path program 1 times [2021-11-03 05:05:10,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:05:10,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388413821] [2021-11-03 05:05:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:10,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:05:10,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:05:10,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:05:10,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:05:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:11,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 05:05:11,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:05:12,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 05:05:14,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 33 [2021-11-03 05:05:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:15,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:05:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:05:19,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:05:19,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388413821] [2021-11-03 05:05:19,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388413821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:05:19,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:05:19,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-03 05:05:19,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697524995] [2021-11-03 05:05:19,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:05:19,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:05:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:05:19,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:05:19,193 INFO L87 Difference]: Start difference. First operand 284 states and 371 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-11-03 05:05:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:05:54,294 INFO L93 Difference]: Finished difference Result 937 states and 1210 transitions. [2021-11-03 05:05:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:05:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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 34 [2021-11-03 05:05:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:05:54,301 INFO L225 Difference]: With dead ends: 937 [2021-11-03 05:05:54,302 INFO L226 Difference]: Without dead ends: 703 [2021-11-03 05:05:54,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2021-11-03 05:05:54,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-03 05:05:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 284. [2021-11-03 05:05:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3074204946996466) internal successors, (370), 283 states have internal predecessors, (370), 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) [2021-11-03 05:05:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 370 transitions. [2021-11-03 05:05:54,344 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 370 transitions. Word has length 34 [2021-11-03 05:05:54,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:05:54,344 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 370 transitions. [2021-11-03 05:05:54,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-11-03 05:05:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 370 transitions. [2021-11-03 05:05:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 05:05:54,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:05:54,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:05:54,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:05:54,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:05:54,564 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:05:54,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:05:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1618041833, now seen corresponding path program 1 times [2021-11-03 05:05:54,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:05:54,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220453838] [2021-11-03 05:05:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:05:54,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:05:54,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:05:54,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:05:54,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:05:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:05:55,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-03 05:05:55,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:05:56,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 05:05:58,109 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 05:05:58,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 63 [2021-11-03 05:05:58,890 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:05:58,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 51 [2021-11-03 05:06:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:00,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:06:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:06:05,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:06:05,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220453838] [2021-11-03 05:06:05,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220453838] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:06:05,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:06:05,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-03 05:06:05,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664263068] [2021-11-03 05:06:05,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:06:05,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:06:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:06:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:06:05,992 INFO L87 Difference]: Start difference. First operand 284 states and 370 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-03 05:09:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:09:21,669 INFO L93 Difference]: Finished difference Result 1013 states and 1401 transitions. [2021-11-03 05:09:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:09:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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 34 [2021-11-03 05:09:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:09:21,685 INFO L225 Difference]: With dead ends: 1013 [2021-11-03 05:09:21,686 INFO L226 Difference]: Without dead ends: 794 [2021-11-03 05:09:21,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2021-11-03 05:09:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-03 05:09:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 281. [2021-11-03 05:09:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.2964285714285715) internal successors, (363), 280 states have internal predecessors, (363), 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) [2021-11-03 05:09:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 363 transitions. [2021-11-03 05:09:21,730 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 363 transitions. Word has length 34 [2021-11-03 05:09:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:09:21,730 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 363 transitions. [2021-11-03 05:09:21,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-03 05:09:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 363 transitions. [2021-11-03 05:09:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 05:09:21,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:09:21,733 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:09:21,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:09:21,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:09:21,958 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:09:21,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:09:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1744456476, now seen corresponding path program 1 times [2021-11-03 05:09:21,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:09:21,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334225133] [2021-11-03 05:09:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:09:21,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:09:21,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:09:21,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:09:21,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6207ab4-f3a6-44ca-b2da-0bb347a07356/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:09:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:09:23,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 05:09:23,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:09:23,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-03 05:09:26,338 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-03 05:09:26,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 54 [2021-11-03 05:09:27,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-03 05:09:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:09:33,417 INFO L328 TraceCheckSpWp]: Computing backward predicates...