./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:31:15,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:31:15,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:31:15,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:31:15,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:31:15,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:31:15,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:31:15,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:31:15,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:31:15,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:31:15,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:31:15,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:31:15,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:31:15,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:31:15,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:31:15,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:31:15,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:31:15,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:31:15,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:31:15,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:31:15,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:31:15,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:31:15,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:31:15,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:31:15,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:31:15,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:31:15,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:31:15,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:31:15,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:31:15,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:31:15,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:31:15,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:31:15,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:31:15,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:31:15,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:31:15,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:31:15,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:31:15,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:31:15,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:31:15,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:31:15,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:31:15,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:31:15,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:31:15,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:31:15,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:31:15,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:31:15,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:31:15,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:31:15,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:31:15,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:31:15,530 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:31:15,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:31:15,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:31:15,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:31:15,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:31:15,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:31:15,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:31:15,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:31:15,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:31:15,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:31:15,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:31:15,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:31:15,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:31:15,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:31:15,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:31:15,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:31:15,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:31:15,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:31:15,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:31:15,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:31:15,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:31:15,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:31:15,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:31:15,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:31:15,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:31:15,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:31:15,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 [2021-11-13 18:31:15,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:31:15,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:31:15,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:31:15,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:31:15,842 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:31:15,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-11-13 18:31:15,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/e3dbfd5df/83221a3a6e42441d88deea3c42a15077/FLAG29e266409 [2021-11-13 18:31:16,475 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:31:16,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-11-13 18:31:16,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/e3dbfd5df/83221a3a6e42441d88deea3c42a15077/FLAG29e266409 [2021-11-13 18:31:16,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/e3dbfd5df/83221a3a6e42441d88deea3c42a15077 [2021-11-13 18:31:16,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:31:16,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:31:16,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:31:16,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:31:16,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:31:16,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:31:16" (1/1) ... [2021-11-13 18:31:16,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8da271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:16, skipping insertion in model container [2021-11-13 18:31:16,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:31:16" (1/1) ... [2021-11-13 18:31:16,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:31:16,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:31:17,106 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:1751) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$46(StandardFunctionHandler.java:379) 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:2007) 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:3254) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2328) 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) [2021-11-13 18:31:17,111 INFO L158 Benchmark]: Toolchain (without parser) took 325.51ms. Allocated memory is still 127.9MB. Free memory was 90.0MB in the beginning and 99.8MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:31:17,112 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 127.9MB. Free memory was 97.8MB in the beginning and 97.8MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:31:17,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.35ms. Allocated memory is still 127.9MB. Free memory was 89.7MB in the beginning and 99.8MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:31:17,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 127.9MB. Free memory was 97.8MB in the beginning and 97.8MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.35ms. Allocated memory is still 127.9MB. Free memory was 89.7MB in the beginning and 99.8MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:31:19,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:31:19,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:31:19,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:31:19,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:31:19,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:31:19,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:31:19,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:31:19,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:31:19,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:31:19,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:31:19,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:31:19,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:31:19,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:31:19,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:31:19,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:31:19,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:31:19,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:31:19,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:31:19,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:31:19,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:31:19,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:31:19,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:31:19,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:31:19,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:31:19,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:31:19,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:31:19,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:31:19,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:31:19,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:31:19,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:31:19,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:31:19,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:31:19,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:31:19,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:31:19,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:31:19,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:31:19,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:31:19,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:31:19,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:31:19,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:31:19,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 18:31:19,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:31:19,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:31:19,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:31:19,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:31:19,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:31:19,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:31:19,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:31:19,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:31:19,620 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:31:19,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:31:19,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:31:19,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:31:19,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:31:19,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:31:19,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:31:19,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:31:19,621 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:31:19,622 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:31:19,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:31:19,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:31:19,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:31:19,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:31:19,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:31:19,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:31:19,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:31:19,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:31:19,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:31:19,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:31:19,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:31:19,624 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:31:19,624 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:31:19,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:31:19,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:31:19,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:31:19,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:31:19,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:31:19,625 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_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3420d94795154cd5f059d8ec6bdcee482b4f1cb5d11f69298f0ab04296514804 [2021-11-13 18:31:20,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:31:20,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:31:20,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:31:20,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:31:20,056 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:31:20,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-11-13 18:31:20,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/77c312f62/38d46eaaf6574d859fe016b2176f9a6a/FLAG82470104c [2021-11-13 18:31:20,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:31:20,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/sv-benchmarks/c/float-newlib/double_req_bl_0882.c [2021-11-13 18:31:20,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/77c312f62/38d46eaaf6574d859fe016b2176f9a6a/FLAG82470104c [2021-11-13 18:31:20,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/data/77c312f62/38d46eaaf6574d859fe016b2176f9a6a [2021-11-13 18:31:20,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:31:20,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:31:20,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:31:20,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:31:20,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:31:20,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:31:20" (1/1) ... [2021-11-13 18:31:20,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d94581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:20, skipping insertion in model container [2021-11-13 18:31:20,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:31:20" (1/1) ... [2021-11-13 18:31:21,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:31:21,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:31:21,393 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_866fc80d-9a5e-49e2-96cc-6e142a551273/sv-benchmarks/c/float-newlib/double_req_bl_0882.c[14275,14288] [2021-11-13 18:31:21,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:31:21,409 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:31:21,523 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_866fc80d-9a5e-49e2-96cc-6e142a551273/sv-benchmarks/c/float-newlib/double_req_bl_0882.c[14275,14288] [2021-11-13 18:31:21,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:31:21,557 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:31:21,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21 WrapperNode [2021-11-13 18:31:21,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:31:21,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:31:21,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:31:21,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:31:21,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:31:21,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:31:21,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:31:21,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:31:21,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:31:21,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:31:21,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:31:21,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:31:21,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (1/1) ... [2021-11-13 18:31:21,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:31:21,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:31:21,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:31:21,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:31:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-13 18:31:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2021-11-13 18:31:21,877 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2021-11-13 18:31:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-13 18:31:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:31:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:31:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-13 18:31:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:31:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:31:21,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:31:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:31:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:32:12,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:32:12,693 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-13 18:32:12,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:32:12 BoogieIcfgContainer [2021-11-13 18:32:12,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:32:12,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:32:12,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:32:12,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:32:12,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:31:20" (1/3) ... [2021-11-13 18:32:12,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577f6b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:32:12, skipping insertion in model container [2021-11-13 18:32:12,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:31:21" (2/3) ... [2021-11-13 18:32:12,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577f6b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:32:12, skipping insertion in model container [2021-11-13 18:32:12,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:32:12" (3/3) ... [2021-11-13 18:32:12,704 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0882.c [2021-11-13 18:32:12,709 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:32:12,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:32:12,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:32:12,777 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:32:12,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:32:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 203 states have (on average 1.7044334975369457) internal successors, (346), 204 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:32:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 18:32:12,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:12,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:12,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1213354154, now seen corresponding path program 1 times [2021-11-13 18:32:12,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:12,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808837793] [2021-11-13 18:32:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:12,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:12,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:12,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:32:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:13,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:32:13,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:13,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:13,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:13,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808837793] [2021-11-13 18:32:13,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808837793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:13,688 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:13,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:32:13,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336051532] [2021-11-13 18:32:13,690 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:13,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:32:13,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:32:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:32:13,722 INFO L87 Difference]: Start difference. First operand has 209 states, 203 states have (on average 1.7044334975369457) internal successors, (346), 204 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-13 18:32:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:32:13,771 INFO L93 Difference]: Finished difference Result 415 states and 703 transitions. [2021-11-13 18:32:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:32:13,773 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-13 18:32:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:32:13,784 INFO L225 Difference]: With dead ends: 415 [2021-11-13 18:32:13,784 INFO L226 Difference]: Without dead ends: 205 [2021-11-13 18:32:13,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:32:13,792 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:32:13,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 3.54ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:32:13,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-13 18:32:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-13 18:32:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.4) internal successors, (280), 200 states have internal predecessors, (280), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:32:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 286 transitions. [2021-11-13 18:32:13,850 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 286 transitions. Word has length 11 [2021-11-13 18:32:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:32:13,850 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 286 transitions. [2021-11-13 18:32:13,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-13 18:32:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 286 transitions. [2021-11-13 18:32:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:32:13,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:32:13,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:32:13,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:32:14,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:32:14,061 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:32:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:32:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 15574631, now seen corresponding path program 1 times [2021-11-13 18:32:14,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:32:14,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073433960] [2021-11-13 18:32:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:32:14,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:32:14,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:32:14,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:32:14,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:32:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:32:14,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:32:14,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:32:14,913 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 27 [2021-11-13 18:32:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:16,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:32:18,931 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 32 treesize of output 30 [2021-11-13 18:32:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:32:19,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:32:19,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073433960] [2021-11-13 18:32:19,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073433960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:32:19,930 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:32:19,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:32:19,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729640069] [2021-11-13 18:32:19,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:32:19,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:32:19,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:32:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:32:19,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2021-11-13 18:32:19,934 INFO L87 Difference]: Start difference. First operand 205 states and 286 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-13 18:32:23,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:24,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:26,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:28,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:30,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:32,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:34,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:38,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:40,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:42,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:44,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:46,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:47,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:50,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:52,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:54,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:56,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:32:59,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:01,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:01,636 INFO L93 Difference]: Finished difference Result 349 states and 481 transitions. [2021-11-13 18:33:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:33:01,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-13 18:33:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:01,787 INFO L225 Difference]: With dead ends: 349 [2021-11-13 18:33:01,788 INFO L226 Difference]: Without dead ends: 340 [2021-11-13 18:33:01,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2021-11-13 18:33:01,790 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 236 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40116.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.87ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 41296.64ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:01,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 1829 Invalid, 177 Unknown, 0 Unchecked, 11.87ms Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 11 Unknown, 95 Unchecked, 41296.64ms Time] [2021-11-13 18:33:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-13 18:33:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 205. [2021-11-13 18:33:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.395) internal successors, (279), 200 states have internal predecessors, (279), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:33:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 285 transitions. [2021-11-13 18:33:01,814 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 285 transitions. Word has length 13 [2021-11-13 18:33:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:01,815 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 285 transitions. [2021-11-13 18:33:01,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-13 18:33:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 285 transitions. [2021-11-13 18:33:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:33:01,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:01,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:01,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:02,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:33:02,027 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:02,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:02,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1882517460, now seen corresponding path program 1 times [2021-11-13 18:33:02,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:33:02,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206106598] [2021-11-13 18:33:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:02,028 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:33:02,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:33:02,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:33:02,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:33:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:02,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:33:02,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:04,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:33:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:07,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:33:07,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206106598] [2021-11-13 18:33:07,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206106598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:07,084 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:07,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 18:33:07,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180419684] [2021-11-13 18:33:07,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:07,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:33:07,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:33:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:33:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:33:07,087 INFO L87 Difference]: Start difference. First operand 205 states and 285 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-13 18:33:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:07,105 INFO L93 Difference]: Finished difference Result 214 states and 294 transitions. [2021-11-13 18:33:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:33:07,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 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 15 [2021-11-13 18:33:07,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:07,107 INFO L225 Difference]: With dead ends: 214 [2021-11-13 18:33:07,108 INFO L226 Difference]: Without dead ends: 205 [2021-11-13 18:33:07,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:33:07,110 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 0 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:07,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1611 Invalid, 55 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 55 Unchecked, 0.14ms Time] [2021-11-13 18:33:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-13 18:33:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-13 18:33:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.39) internal successors, (278), 200 states have internal predecessors, (278), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:33:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 284 transitions. [2021-11-13 18:33:07,129 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 284 transitions. Word has length 15 [2021-11-13 18:33:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:07,129 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 284 transitions. [2021-11-13 18:33:07,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-13 18:33:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 284 transitions. [2021-11-13 18:33:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:33:07,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:07,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:07,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:07,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:33:07,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1880670418, now seen corresponding path program 1 times [2021-11-13 18:33:07,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:33:07,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449682233] [2021-11-13 18:33:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:07,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:33:07,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:33:07,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:33:07,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:33:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:07,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 18:33:07,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:08,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 45 [2021-11-13 18:33:10,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:10,872 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 73 treesize of output 71 [2021-11-13 18:33:11,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-13 18:33:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:14,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:33:20,454 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:20,454 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 94 [2021-11-13 18:33:20,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:20,682 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 94 treesize of output 98 [2021-11-13 18:33:21,002 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 18:33:21,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 91 [2021-11-13 18:33:21,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2021-11-13 18:33:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:27,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:33:27,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449682233] [2021-11-13 18:33:27,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449682233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:33:27,999 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:33:27,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-13 18:33:28,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580717510] [2021-11-13 18:33:28,000 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:33:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:33:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:33:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:33:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:33:28,002 INFO L87 Difference]: Start difference. First operand 205 states and 284 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2021-11-13 18:33:32,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:36,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:39,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:40,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:42,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:43,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:45,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:48,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:50,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:51,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:54,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:55,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:33:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:33:55,765 INFO L93 Difference]: Finished difference Result 214 states and 293 transitions. [2021-11-13 18:33:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:33:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 15 [2021-11-13 18:33:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:33:55,770 INFO L225 Difference]: With dead ends: 214 [2021-11-13 18:33:55,770 INFO L226 Difference]: Without dead ends: 204 [2021-11-13 18:33:55,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:33:55,772 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26357.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 27734.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:33:55,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1999 Invalid, 152 Unknown, 0 Unchecked, 6.08ms Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 6 Unknown, 65 Unchecked, 27734.71ms Time] [2021-11-13 18:33:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-13 18:33:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-11-13 18:33:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3869346733668342) internal successors, (276), 199 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:33:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 282 transitions. [2021-11-13 18:33:55,805 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 282 transitions. Word has length 15 [2021-11-13 18:33:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:33:55,805 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 282 transitions. [2021-11-13 18:33:55,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2021-11-13 18:33:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 282 transitions. [2021-11-13 18:33:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 18:33:55,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:33:55,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:33:55,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:33:56,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:33:56,034 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:33:56,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:33:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash -179671687, now seen corresponding path program 1 times [2021-11-13 18:33:56,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:33:56,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721171496] [2021-11-13 18:33:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:33:56,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:33:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:33:56,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:33:56,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:33:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:33:56,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:33:56,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:33:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:33:59,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:01,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:34:01,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721171496] [2021-11-13 18:34:01,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721171496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:01,369 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:01,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 18:34:01,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150316736] [2021-11-13 18:34:01,369 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:01,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:34:01,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:34:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:34:01,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:34:01,371 INFO L87 Difference]: Start difference. First operand 204 states and 282 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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) [2021-11-13 18:34:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:01,388 INFO L93 Difference]: Finished difference Result 228 states and 312 transitions. [2021-11-13 18:34:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:34:01,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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 18 [2021-11-13 18:34:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:01,391 INFO L225 Difference]: With dead ends: 228 [2021-11-13 18:34:01,391 INFO L226 Difference]: Without dead ends: 219 [2021-11-13 18:34:01,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:34:01,393 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 109 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:01,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1628 Invalid, 65 Unknown, 0 Unchecked, 3.85ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 65 Unchecked, 0.09ms Time] [2021-11-13 18:34:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-13 18:34:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 204. [2021-11-13 18:34:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3819095477386936) internal successors, (275), 199 states have internal predecessors, (275), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:34:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 281 transitions. [2021-11-13 18:34:01,408 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 281 transitions. Word has length 18 [2021-11-13 18:34:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:01,409 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 281 transitions. [2021-11-13 18:34:01,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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) [2021-11-13 18:34:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 281 transitions. [2021-11-13 18:34:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:34:01,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:01,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:01,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:01,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:34:01,633 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 638802544, now seen corresponding path program 1 times [2021-11-13 18:34:01,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:34:01,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386293562] [2021-11-13 18:34:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:01,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:34:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:34:01,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:34:01,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:34:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:02,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:34:02,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:03,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:04,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:34:04,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386293562] [2021-11-13 18:34:04,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386293562] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:04,998 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:04,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:34:04,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042175034] [2021-11-13 18:34:04,998 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:04,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:34:04,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:34:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:34:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:34:04,999 INFO L87 Difference]: Start difference. First operand 204 states and 281 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2021-11-13 18:34:09,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:09,817 INFO L93 Difference]: Finished difference Result 442 states and 595 transitions. [2021-11-13 18:34:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:34:09,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 [2021-11-13 18:34:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:09,942 INFO L225 Difference]: With dead ends: 442 [2021-11-13 18:34:09,942 INFO L226 Difference]: Without dead ends: 433 [2021-11-13 18:34:09,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:34:09,944 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 510 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2588.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 2590.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:09,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1195 Invalid, 37 Unknown, 0 Unchecked, 4.44ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 31 Unchecked, 2590.65ms Time] [2021-11-13 18:34:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-13 18:34:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 204. [2021-11-13 18:34:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3768844221105527) internal successors, (274), 199 states have internal predecessors, (274), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:34:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 280 transitions. [2021-11-13 18:34:09,959 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 280 transitions. Word has length 19 [2021-11-13 18:34:09,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:09,959 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 280 transitions. [2021-11-13 18:34:09,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2021-11-13 18:34:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 280 transitions. [2021-11-13 18:34:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:34:09,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:09,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:09,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:10,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:34:10,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:10,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash 433780882, now seen corresponding path program 1 times [2021-11-13 18:34:10,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:34:10,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158052791] [2021-11-13 18:34:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:10,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:34:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:34:10,176 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:34:10,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:34:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:10,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:34:10,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:13,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:18,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:34:18,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158052791] [2021-11-13 18:34:18,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158052791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:34:18,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:34:18,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 18:34:18,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508326993] [2021-11-13 18:34:18,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:34:18,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:34:18,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:34:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:34:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:34:18,574 INFO L87 Difference]: Start difference. First operand 204 states and 280 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-11-13 18:34:21,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:24,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:25,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:27,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:29,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:31,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:33,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:35,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:41,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:34:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:34:41,398 INFO L93 Difference]: Finished difference Result 365 states and 489 transitions. [2021-11-13 18:34:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:34:41,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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 [2021-11-13 18:34:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:34:41,522 INFO L225 Difference]: With dead ends: 365 [2021-11-13 18:34:41,522 INFO L226 Difference]: Without dead ends: 356 [2021-11-13 18:34:41,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:34:41,524 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 260 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20042.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 20495.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:34:41,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2179 Invalid, 120 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 2 Unknown, 62 Unchecked, 20495.22ms Time] [2021-11-13 18:34:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-13 18:34:41,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 208. [2021-11-13 18:34:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.3842364532019704) internal successors, (281), 203 states have internal predecessors, (281), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:34:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 287 transitions. [2021-11-13 18:34:41,539 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 287 transitions. Word has length 19 [2021-11-13 18:34:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:34:41,540 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 287 transitions. [2021-11-13 18:34:41,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-11-13 18:34:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 287 transitions. [2021-11-13 18:34:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 18:34:41,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:34:41,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:34:41,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:34:41,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:34:41,751 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:34:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:34:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash 431933840, now seen corresponding path program 1 times [2021-11-13 18:34:41,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:34:41,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835169757] [2021-11-13 18:34:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:34:41,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:34:41,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:34:41,753 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:34:41,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:34:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:34:42,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:34:42,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:34:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:34:46,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:34:53,281 WARN L838 $PredicateComparison]: unable to prove that (fp.eq (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start___ieee754_pow_~x#1|) (_ +zero 11 53)) is different from false [2021-11-13 18:34:55,482 WARN L860 $PredicateComparison]: unable to prove that (fp.eq (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start___ieee754_pow_~x#1|) (_ +zero 11 53)) is different from true [2021-11-13 18:35:50,308 WARN L838 $PredicateComparison]: unable to prove that (fp.eq (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start_main_~x~0#1|) (_ +zero 11 53)) is different from false [2021-11-13 18:35:52,505 WARN L860 $PredicateComparison]: unable to prove that (fp.eq (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start_main_~x~0#1|) (_ +zero 11 53)) is different from true [2021-11-13 18:35:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:35:53,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:35:53,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835169757] [2021-11-13 18:35:53,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835169757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:35:53,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:35:53,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 18:35:53,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911921245] [2021-11-13 18:35:53,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:35:53,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:35:53,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:35:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:35:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=51, Unknown=4, NotChecked=30, Total=110 [2021-11-13 18:35:53,822 INFO L87 Difference]: Start difference. First operand 208 states and 287 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2021-11-13 18:35:57,253 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.eq (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start_main_~x~0#1|) (_ +zero 11 53)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode .cse0 (_ +zero 11 53))) (= c_~one_pow~0 .cse0))) is different from true [2021-11-13 18:36:00,587 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= |c_ULTIMATE.start___ieee754_pow_~x#1| (fp.div c_currentRoundingMode .cse0 (_ +zero 11 53))) (fp.eq (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start___ieee754_pow_~x#1|) (_ +zero 11 53)) (= c_~one_pow~0 .cse0))) is different from true [2021-11-13 18:36:03,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:05,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:09,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:11,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:13,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:15,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:17,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:18,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:21,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:23,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:25,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:28,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:29,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:30,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:33,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:36,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:38,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:40,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:43,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:45,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:47,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:48,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:50,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:53,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:55,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:36:57,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:01,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:03,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:05,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:09,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:11,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:13,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:16,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:18,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:20,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:22,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:24,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:26,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:28,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:31,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:33,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:35,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:37,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:38,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:40,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:42,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:44,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:46,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:49,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:51,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:53,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:55,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:57,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:37:59,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:01,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:04,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:06,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:08,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:13,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:15,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:17,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:18,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:21,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:22,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:24,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:28,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:30,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:32,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:34,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:36,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:38,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:40,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:42,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:44,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:46,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:49,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:51,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:53,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:55,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:57,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:38:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:38:57,127 INFO L93 Difference]: Finished difference Result 217 states and 299 transitions. [2021-11-13 18:38:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:38:57,164 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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 [2021-11-13 18:38:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:38:57,166 INFO L225 Difference]: With dead ends: 217 [2021-11-13 18:38:57,166 INFO L226 Difference]: Without dead ends: 214 [2021-11-13 18:38:57,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=29, Invalid=53, Unknown=6, NotChecked=68, Total=156 [2021-11-13 18:38:57,167 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 6 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 65 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171614.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 65 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 176686.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:38:57,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1448 Invalid, 781 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 65 Unknown, 619 Unchecked, 176686.08ms Time] [2021-11-13 18:38:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-13 18:38:57,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-13 18:38:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.38755980861244) internal successors, (290), 209 states have internal predecessors, (290), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:38:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 296 transitions. [2021-11-13 18:38:57,179 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 296 transitions. Word has length 19 [2021-11-13 18:38:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:38:57,180 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 296 transitions. [2021-11-13 18:38:57,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2021-11-13 18:38:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 296 transitions. [2021-11-13 18:38:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 18:38:57,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:38:57,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:38:57,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:38:57,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:38:57,395 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:38:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:38:57,395 INFO L85 PathProgramCache]: Analyzing trace with hash -945367497, now seen corresponding path program 1 times [2021-11-13 18:38:57,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:38:57,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336472694] [2021-11-13 18:38:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:38:57,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:38:57,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:38:57,397 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:38:57,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:38:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:38:57,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:38:57,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:00,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:02,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:02,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336472694] [2021-11-13 18:39:02,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336472694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:02,582 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:02,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:39:02,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474832413] [2021-11-13 18:39:02,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:02,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:39:02,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:39:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:39:02,584 INFO L87 Difference]: Start difference. First operand 214 states and 296 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-13 18:39:04,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:04,966 INFO L93 Difference]: Finished difference Result 407 states and 554 transitions. [2021-11-13 18:39:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:39:04,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 20 [2021-11-13 18:39:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:04,969 INFO L225 Difference]: With dead ends: 407 [2021-11-13 18:39:04,970 INFO L226 Difference]: Without dead ends: 210 [2021-11-13 18:39:04,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:39:04,974 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 70 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2142.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 2367.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:04,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1334 Invalid, 22 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 14 Unchecked, 2367.50ms Time] [2021-11-13 18:39:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-13 18:39:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2021-11-13 18:39:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.3435897435897435) internal successors, (262), 195 states have internal predecessors, (262), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:39:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 268 transitions. [2021-11-13 18:39:04,990 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 268 transitions. Word has length 20 [2021-11-13 18:39:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:04,990 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 268 transitions. [2021-11-13 18:39:04,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-13 18:39:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 268 transitions. [2021-11-13 18:39:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 18:39:04,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:04,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:05,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:05,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:05,214 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:05,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash -366267549, now seen corresponding path program 1 times [2021-11-13 18:39:05,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:05,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152150912] [2021-11-13 18:39:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:05,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:05,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:05,218 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:05,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:39:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:05,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:39:05,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:09,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:13,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:13,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152150912] [2021-11-13 18:39:13,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152150912] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:13,552 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:13,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 18:39:13,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873922531] [2021-11-13 18:39:13,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:13,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:39:13,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:39:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:39:13,553 INFO L87 Difference]: Start difference. First operand 200 states and 268 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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) [2021-11-13 18:39:17,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:17,994 INFO L93 Difference]: Finished difference Result 311 states and 406 transitions. [2021-11-13 18:39:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:39:17,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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 21 [2021-11-13 18:39:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:17,999 INFO L225 Difference]: With dead ends: 311 [2021-11-13 18:39:17,999 INFO L226 Difference]: Without dead ends: 300 [2021-11-13 18:39:17,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:39:18,000 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 299 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3940.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.09ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 4407.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:18,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1874 Invalid, 68 Unknown, 0 Unchecked, 3.09ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 1 Unknown, 45 Unchecked, 4407.54ms Time] [2021-11-13 18:39:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-13 18:39:18,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 198. [2021-11-13 18:39:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3367875647668395) internal successors, (258), 193 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:39:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2021-11-13 18:39:18,015 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 21 [2021-11-13 18:39:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:18,015 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2021-11-13 18:39:18,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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) [2021-11-13 18:39:18,016 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2021-11-13 18:39:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 18:39:18,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:18,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:18,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:18,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:18,231 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:18,231 INFO L85 PathProgramCache]: Analyzing trace with hash -29840134, now seen corresponding path program 1 times [2021-11-13 18:39:18,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:18,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130794880] [2021-11-13 18:39:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:18,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:18,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:18,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:18,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:39:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:18,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:39:18,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:20,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:24,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:24,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130794880] [2021-11-13 18:39:24,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130794880] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:24,211 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:24,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:39:24,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9868280] [2021-11-13 18:39:24,212 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:24,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:39:24,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:39:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:39:24,213 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-11-13 18:39:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:24,688 INFO L93 Difference]: Finished difference Result 324 states and 428 transitions. [2021-11-13 18:39:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:39:24,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 21 [2021-11-13 18:39:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:24,695 INFO L225 Difference]: With dead ends: 324 [2021-11-13 18:39:24,695 INFO L226 Difference]: Without dead ends: 314 [2021-11-13 18:39:24,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:39:24,699 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 144 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 133.29ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:24,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1224 Invalid, 23 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 19 Unchecked, 133.29ms Time] [2021-11-13 18:39:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-13 18:39:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 198. [2021-11-13 18:39:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3316062176165804) internal successors, (257), 193 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:39:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2021-11-13 18:39:24,712 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 21 [2021-11-13 18:39:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:24,712 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2021-11-13 18:39:24,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2021-11-13 18:39:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2021-11-13 18:39:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 18:39:24,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:24,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:39:24,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:24,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:24,933 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:24,933 INFO L85 PathProgramCache]: Analyzing trace with hash 27418168, now seen corresponding path program 1 times [2021-11-13 18:39:24,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:24,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [644428271] [2021-11-13 18:39:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:24,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:24,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:24,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:24,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:39:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:25,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:39:25,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:27,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:39:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:29,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:39:29,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [644428271] [2021-11-13 18:39:29,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [644428271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:39:29,331 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:39:29,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:39:29,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953594659] [2021-11-13 18:39:29,332 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:39:29,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:39:29,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:39:29,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:39:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:39:29,333 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-13 18:39:32,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:35,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:38,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:41,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:43,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:45,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:48,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-13 18:39:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:39:48,101 INFO L93 Difference]: Finished difference Result 210 states and 274 transitions. [2021-11-13 18:39:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:39:48,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 21 [2021-11-13 18:39:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:39:48,103 INFO L225 Difference]: With dead ends: 210 [2021-11-13 18:39:48,103 INFO L226 Difference]: Without dead ends: 207 [2021-11-13 18:39:48,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:39:48,105 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 503 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16448.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17347.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:39:48,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1016 Invalid, 50 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 17347.32ms Time] [2021-11-13 18:39:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-13 18:39:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2021-11-13 18:39:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.3316062176165804) internal successors, (257), 193 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:39:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2021-11-13 18:39:48,118 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 21 [2021-11-13 18:39:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:39:48,119 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2021-11-13 18:39:48,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-13 18:39:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2021-11-13 18:39:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 18:39:48,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:39:48,121 INFO L514 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] [2021-11-13 18:39:48,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:39:48,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:39:48,335 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:39:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:39:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2086387867, now seen corresponding path program 1 times [2021-11-13 18:39:48,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:39:48,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320081230] [2021-11-13 18:39:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:39:48,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:39:48,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:39:48,337 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:39:48,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:39:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:39:49,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:39:49,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:39:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:39:57,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:40:12,775 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_67| (_ BitVec 64))) (or (not (= (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start___ieee754_pow_~x#1|) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_67|)))) (= (bvand (_ bv2147483648 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_67|)) (_ bv0 32)))) is different from false [2021-11-13 18:42:00,332 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_67| (_ BitVec 64))) (or (not (= (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start_main_~x~0#1|) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_67|)))) (= (bvand (_ bv2147483648 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_67|)) (_ bv0 32)))) is different from false [2021-11-13 18:42:02,590 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_67| (_ BitVec 64))) (or (not (= (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start_main_~x~0#1|) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_67|)))) (= (bvand (_ bv2147483648 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_67|)) (_ bv0 32)))) is different from true [2021-11-13 18:42:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:42:04,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:42:04,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320081230] [2021-11-13 18:42:04,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320081230] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:42:04,761 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:42:04,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-13 18:42:04,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747939314] [2021-11-13 18:42:04,761 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:42:04,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:42:04,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:42:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:42:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=203, Unknown=3, NotChecked=58, Total=306 [2021-11-13 18:42:04,763 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 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) [2021-11-13 18:42:07,275 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (forall ((|v_skolemized_q#valueAsBitvector_67| (_ BitVec 64))) (or (not (= (fp.div c_currentRoundingMode c_~one_pow~0 |c_ULTIMATE.start_main_~x~0#1|) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_67|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_67|)))) (= (bvand (_ bv2147483648 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_67|)) (_ bv0 32)))) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode .cse0 (_ +zero 11 53))) (= c_~one_pow~0 .cse0))) is different from true [2021-11-13 18:42:08,989 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-13 18:42:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:42:08,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=44, Invalid=204, Unknown=4, NotChecked=90, Total=342 [2021-11-13 18:42:08,991 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 264.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:42:08,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 15 Unknown, 0 Unchecked, 0.07ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 8 Unchecked, 264.90ms Time] [2021-11-13 18:42:08,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-13 18:42:09,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 18:42:09,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:42:09,193 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:829) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 49 more [2021-11-13 18:42:09,197 INFO L158 Benchmark]: Toolchain (without parser) took 648212.39ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 60.4MB in the beginning and 90.2MB in the end (delta: -29.7MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-11-13 18:42:09,198 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 77.6MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:42:09,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.25ms. Allocated memory is still 77.6MB. Free memory was 60.1MB in the beginning and 47.8MB in the end (delta: 12.3MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-13 18:42:09,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.55ms. Allocated memory is still 77.6MB. Free memory was 47.8MB in the beginning and 43.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:42:09,199 INFO L158 Benchmark]: Boogie Preprocessor took 131.08ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 38.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:42:09,200 INFO L158 Benchmark]: RCFGBuilder took 50916.97ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 38.4MB in the beginning and 90.9MB in the end (delta: -52.5MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2021-11-13 18:42:09,200 INFO L158 Benchmark]: TraceAbstraction took 596500.04ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 90.2MB in the end (delta: 691.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:42:09,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 77.6MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.25ms. Allocated memory is still 77.6MB. Free memory was 60.1MB in the beginning and 47.8MB in the end (delta: 12.3MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.55ms. Allocated memory is still 77.6MB. Free memory was 47.8MB in the beginning and 43.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 131.08ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 38.4MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 50916.97ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 38.4MB in the beginning and 90.9MB in the end (delta: -52.5MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * TraceAbstraction took 596500.04ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 90.2MB in the end (delta: 691.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_866fc80d-9a5e-49e2-96cc-6e142a551273/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")