./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/knuth.i --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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/knuth.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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 08f39468d7757b1a22fdbf1465bbd41291a8868febbded34fd41fea8ffa53398 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:14:22,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:14:22,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:14:22,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:14:22,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:14:22,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:14:22,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:14:22,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:14:22,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:14:22,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:14:22,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:14:22,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:14:22,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:14:22,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:14:22,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:14:22,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:14:22,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:14:22,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:14:22,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:14:22,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:14:22,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:14:22,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:14:22,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:14:22,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:14:22,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:14:22,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:14:22,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:14:22,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:14:22,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:14:22,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:14:22,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:14:22,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:14:22,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:14:22,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:14:22,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:14:22,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:14:22,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:14:22,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:14:22,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:14:22,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:14:22,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:14:22,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:14:22,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:14:22,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:14:22,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:14:22,475 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:14:22,476 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:14:22,476 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:14:22,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:14:22,476 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:14:22,483 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:14:22,484 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:14:22,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:14:22,485 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:14:22,486 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:14:22,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:14:22,486 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:14:22,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:14:22,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:14:22,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:14:22,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:14:22,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:14:22,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:14:22,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:14:22,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:14:22,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:14:22,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:14:22,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:14:22,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:14:22,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:14:22,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:14:22,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:14:22,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:14:22,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:14:22,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:14:22,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:14:22,493 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:14:22,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:14:22,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:14:22,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:14:22,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:14:22,495 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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08f39468d7757b1a22fdbf1465bbd41291a8868febbded34fd41fea8ffa53398 [2021-11-03 05:14:22,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:14:22,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:14:22,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:14:22,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:14:22,790 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:14:22,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench/knuth.i [2021-11-03 05:14:22,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/cdf42b9dd/7bc4906253bb4c46944ea00a573acbba/FLAG56ae7f990 [2021-11-03 05:14:23,307 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:14:23,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/sv-benchmarks/c/nla-digbench/knuth.i [2021-11-03 05:14:23,316 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/cdf42b9dd/7bc4906253bb4c46944ea00a573acbba/FLAG56ae7f990 [2021-11-03 05:14:23,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/cdf42b9dd/7bc4906253bb4c46944ea00a573acbba [2021-11-03 05:14:23,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:14:23,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:14:23,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:14:23,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:14:23,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:14:23,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:14:23" (1/1) ... [2021-11-03 05:14:23,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d64cf0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:23, skipping insertion in model container [2021-11-03 05:14:23,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:14:23" (1/1) ... [2021-11-03 05:14:23,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:14:23,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:14:23,933 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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/sv-benchmarks/c/nla-digbench/knuth.i[948,961] [2021-11-03 05:14:23,946 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1699) 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.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1381) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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 05:14:23,949 INFO L168 Benchmark]: Toolchain (without parser) took 268.05 ms. Allocated memory is still 104.9 MB. Free memory was 65.5 MB in the beginning and 80.8 MB in the end (delta: -15.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:14:23,950 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 81.7 MB in the end (delta: 64.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:14:23,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.72 ms. Allocated memory is still 104.9 MB. Free memory was 65.3 MB in the beginning and 80.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:14:23,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 81.7 MB in the end (delta: 64.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.72 ms. Allocated memory is still 104.9 MB. Free memory was 65.3 MB in the beginning and 80.8 MB in the end (delta: -15.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- 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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/knuth.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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 08f39468d7757b1a22fdbf1465bbd41291a8868febbded34fd41fea8ffa53398 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:14:26,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:14:26,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:14:26,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:14:26,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:14:26,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:14:26,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:14:26,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:14:26,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:14:26,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:14:26,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:14:26,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:14:26,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:14:26,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:14:26,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:14:26,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:14:26,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:14:26,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:14:26,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:14:26,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:14:26,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:14:26,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:14:26,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:14:26,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:14:26,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:14:26,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:14:26,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:14:26,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:14:26,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:14:26,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:14:26,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:14:26,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:14:26,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:14:26,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:14:26,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:14:26,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:14:26,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:14:26,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:14:26,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:14:26,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:14:26,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:14:26,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:14:26,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:14:26,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:14:26,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:14:26,390 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:14:26,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:14:26,391 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:14:26,391 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:14:26,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:14:26,392 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:14:26,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:14:26,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:14:26,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:14:26,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:14:26,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:14:26,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:14:26,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:14:26,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:14:26,395 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:14:26,396 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:14:26,396 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:14:26,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:14:26,396 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:14:26,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:14:26,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:14:26,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:14:26,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:14:26,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:14:26,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:14:26,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:14:26,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:14:26,398 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:14:26,398 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:14:26,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:14:26,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:14:26,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:14:26,399 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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08f39468d7757b1a22fdbf1465bbd41291a8868febbded34fd41fea8ffa53398 [2021-11-03 05:14:26,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:14:26,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:14:26,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:14:26,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:14:26,836 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:14:26,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench/knuth.i [2021-11-03 05:14:26,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/312367722/1fe3165d3ec74c6e8f7fa463fce137db/FLAG1ffe13bab [2021-11-03 05:14:27,398 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:14:27,399 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/sv-benchmarks/c/nla-digbench/knuth.i [2021-11-03 05:14:27,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/312367722/1fe3165d3ec74c6e8f7fa463fce137db/FLAG1ffe13bab [2021-11-03 05:14:27,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/data/312367722/1fe3165d3ec74c6e8f7fa463fce137db [2021-11-03 05:14:27,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:14:27,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:14:27,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:14:27,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:14:27,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:14:27,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:14:27" (1/1) ... [2021-11-03 05:14:27,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f70fed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:27, skipping insertion in model container [2021-11-03 05:14:27,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:14:27" (1/1) ... [2021-11-03 05:14:27,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:14:27,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:14:28,001 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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/sv-benchmarks/c/nla-digbench/knuth.i[948,961] [2021-11-03 05:14:28,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:14:28,044 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:14:28,057 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_ea002c96-e760-4b8b-9bfc-188d0ac1de53/sv-benchmarks/c/nla-digbench/knuth.i[948,961] [2021-11-03 05:14:28,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:14:28,129 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:14:28,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28 WrapperNode [2021-11-03 05:14:28,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:14:28,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:14:28,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:14:28,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:14:28,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:14:28,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:14:28,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:14:28,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:14:28,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:14:28,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:14:28,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:14:28,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:14:28,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (1/1) ... [2021-11-03 05:14:28,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:14:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:14:28,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:14:28,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:14:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:14:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:14:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:14:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:14:31,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:14:31,634 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-03 05:14:31,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:14:31 BoogieIcfgContainer [2021-11-03 05:14:31,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:14:31,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:14:31,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:14:31,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:14:31,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:14:27" (1/3) ... [2021-11-03 05:14:31,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5462f684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:14:31, skipping insertion in model container [2021-11-03 05:14:31,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:14:28" (2/3) ... [2021-11-03 05:14:31,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5462f684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:14:31, skipping insertion in model container [2021-11-03 05:14:31,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:14:31" (3/3) ... [2021-11-03 05:14:31,646 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth.i [2021-11-03 05:14:31,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:14:31,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 05:14:31,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:14:31,701 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 05:14:31,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 05:14:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 25 states have (on average 1.64) internal successors, (41), 29 states have internal predecessors, (41), 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 05:14:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:14:31,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:14:31,720 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:14:31,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:14:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:14:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-11-03 05:14:31,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:14:31,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794721081] [2021-11-03 05:14:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:14:31,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:14:31,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:14:31,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:14:31,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:14:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:14:32,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:14:32,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:14:32,205 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 05:14:32,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:14:32,318 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 05:14:32,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:14:32,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794721081] [2021-11-03 05:14:32,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794721081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:14:32,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:14:32,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:14:32,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095272207] [2021-11-03 05:14:32,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:14:32,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:14:32,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:14:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:14:32,345 INFO L87 Difference]: Start difference. First operand has 30 states, 25 states have (on average 1.64) internal successors, (41), 29 states have internal predecessors, (41), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 05:14:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:14:32,362 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2021-11-03 05:14:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:14:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-03 05:14:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:14:32,373 INFO L225 Difference]: With dead ends: 57 [2021-11-03 05:14:32,373 INFO L226 Difference]: Without dead ends: 26 [2021-11-03 05:14:32,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 05:14:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-03 05:14:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-03 05:14:32,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 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 05:14:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-03 05:14:32,448 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 9 [2021-11-03 05:14:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:14:32,459 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-03 05:14:32,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 05:14:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-03 05:14:32,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 05:14:32,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:14:32,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:14:32,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:14:32,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:14:32,677 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:14:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:14:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-11-03 05:14:32,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:14:32,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408177259] [2021-11-03 05:14:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:14:32,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:14:32,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:14:32,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:14:32,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea002c96-e760-4b8b-9bfc-188d0ac1de53/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process