./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX --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 dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:04,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:04,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:04,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:04,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:04,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:04,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:04,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:04,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:04,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:04,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:04,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:04,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:04,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:04,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:04,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:04,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:04,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:04,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:04,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:04,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:04,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:04,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:04,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:04,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:04,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:04,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:04,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:04,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:04,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:04,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:04,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:04,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:04,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:04,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:04,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:04,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:04,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:04,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:04,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:04,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:04,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:33:04,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:04,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:04,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:04,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:04,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:04,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:04,591 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:04,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:04,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:33:04,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:33:04,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:33:04,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:04,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:33:04,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:04,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:33:04,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:33:04,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:33:04,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:04,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:33:04,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:04,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:04,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:04,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:04,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:04,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:04,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:33:04,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:33:04,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:33:04,596 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:33:04,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:33:04,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:33:04,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:04,597 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_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2021-11-09 09:33:04,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:04,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:04,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:04,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:04,956 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:04,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-11-09 09:33:05,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/ebdc557a3/2185e62717764cf79c947dfa12045e87/FLAGf67bdea4a [2021-11-09 09:33:05,684 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:05,685 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-11-09 09:33:05,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/ebdc557a3/2185e62717764cf79c947dfa12045e87/FLAGf67bdea4a [2021-11-09 09:33:05,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/ebdc557a3/2185e62717764cf79c947dfa12045e87 [2021-11-09 09:33:05,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:05,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:33:05,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:05,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:05,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:05,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:05" (1/1) ... [2021-11-09 09:33:05,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f97e097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:05, skipping insertion in model container [2021-11-09 09:33:05,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:05" (1/1) ... [2021-11-09 09:33:05,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:05,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:06,668 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1732) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1103) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2378) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2378) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1437) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1381) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java: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) [2021-11-09 09:33:06,675 INFO L168 Benchmark]: Toolchain (without parser) took 762.29 ms. Allocated memory is still 109.1 MB. Free memory was 80.1 MB in the beginning and 80.7 MB in the end (delta: -619.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:06,677 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:06,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.51 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 80.7 MB in the end (delta: -843.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:06,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 109.1 MB. Free memory is still 64.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 759.51 ms. Allocated memory is still 109.1 MB. Free memory was 79.9 MB in the beginning and 80.7 MB in the end (delta: -843.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX --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 dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:09,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:09,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:09,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:09,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:09,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:09,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:09,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:09,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:09,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:09,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:09,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:09,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:09,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:09,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:09,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:09,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:09,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:09,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:09,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:09,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:09,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:09,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:09,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:09,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:09,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:09,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:09,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:09,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:09,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:09,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:09,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:09,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:09,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:09,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:09,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:09,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:09,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:09,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:09,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:09,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:09,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 09:33:09,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:09,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:09,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:09,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:09,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:09,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:09,305 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:09,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:09,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:33:09,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:33:09,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:09,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:33:09,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:09,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:33:09,307 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:33:09,308 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:33:09,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:33:09,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:33:09,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:09,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:33:09,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:09,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:09,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:09,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:09,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:09,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:09,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:33:09,311 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:33:09,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:33:09,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:33:09,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:33:09,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:33:09,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:09,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:33:09,312 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_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfbab9e5d88cf149f4b9ab5fe536f84371f1d923890981fbbe005b1f77367bf6 [2021-11-09 09:33:09,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:09,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:09,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:09,678 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:09,679 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:09,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-11-09 09:33:09,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/df64f8ebf/aa41c2efea3e4a37920f170f5fd27d99/FLAGc74018c62 [2021-11-09 09:33:10,429 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:10,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2021-11-09 09:33:10,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/df64f8ebf/aa41c2efea3e4a37920f170f5fd27d99/FLAGc74018c62 [2021-11-09 09:33:10,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/data/df64f8ebf/aa41c2efea3e4a37920f170f5fd27d99 [2021-11-09 09:33:10,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:10,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:33:10,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:10,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:10,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:10,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:10" (1/1) ... [2021-11-09 09:33:10,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ae909a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:10, skipping insertion in model container [2021-11-09 09:33:10,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:10" (1/1) ... [2021-11-09 09:33:10,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:10,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:11,510 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_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2021-11-09 09:33:11,533 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_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2021-11-09 09:33:11,534 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_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2021-11-09 09:33:11,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:11,555 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:33:11,606 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_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2021-11-09 09:33:11,611 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_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2021-11-09 09:33:11,620 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_45b67704-457b-4b81-9059-5e68f6d261e7/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2021-11-09 09:33:11,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:11,760 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:33:11,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11 WrapperNode [2021-11-09 09:33:11,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:11,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:11,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:33:11,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:33:11,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:11,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:33:11,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:33:11,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:33:11,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:33:11,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:33:11,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:33:11,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:33:11,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (1/1) ... [2021-11-09 09:33:11,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:11,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:11,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:33:11,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:33:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:33:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:33:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:33:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:33:15,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:33:15,461 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-09 09:33:15,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:15 BoogieIcfgContainer [2021-11-09 09:33:15,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:33:15,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:33:15,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:33:15,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:33:15,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:33:10" (1/3) ... [2021-11-09 09:33:15,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677076e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:15, skipping insertion in model container [2021-11-09 09:33:15,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:11" (2/3) ... [2021-11-09 09:33:15,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677076e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:15, skipping insertion in model container [2021-11-09 09:33:15,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:15" (3/3) ... [2021-11-09 09:33:15,474 INFO L111 eAbstractionObserver]: Analyzing ICFG float-div1.i [2021-11-09 09:33:15,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:33:15,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-09 09:33:15,531 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:33:15,537 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 [2021-11-09 09:33:15,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-09 09:33:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 16 states have (on average 1.5) internal successors, (24), 19 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) [2021-11-09 09:33:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 09:33:15,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:15,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 09:33:15,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:33:15,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-09 09:33:15,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:33:15,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259380171] [2021-11-09 09:33:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:15,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:33:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:33:15,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:33:15,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:33:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:16,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:33:16,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:16,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:33:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:16,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:33:16,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259380171] [2021-11-09 09:33:16,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259380171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:33:16,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:33:16,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:33:16,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032072601] [2021-11-09 09:33:16,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:33:16,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:33:16,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:33:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:16,162 INFO L87 Difference]: Start difference. First operand has 20 states, 16 states have (on average 1.5) internal successors, (24), 19 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-09 09:33:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:33:16,178 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-11-09 09:33:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:33:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-09 09:33:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:33:16,201 INFO L225 Difference]: With dead ends: 37 [2021-11-09 09:33:16,201 INFO L226 Difference]: Without dead ends: 16 [2021-11-09 09:33:16,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:33:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-09 09:33:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-09 09:33:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:33:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-11-09 09:33:16,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 6 [2021-11-09 09:33:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:33:16,238 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-11-09 09:33:16,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-09 09:33:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-11-09 09:33:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 09:33:16,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:16,240 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 09:33:16,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:33:16,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:33:16,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:33:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-09 09:33:16,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:33:16,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648601925] [2021-11-09 09:33:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:16,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:33:16,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:33:16,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:33:16,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:33:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:33:17,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:33:17,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:33:33,301 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (= c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))))) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-09 09:33:48,449 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) is different from false [2021-11-09 09:33:50,503 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.leq ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) is different from true [2021-11-09 09:33:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:33:50,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:33:56,809 WARN L838 $PredicateComparison]: unable to prove that (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) is different from false [2021-11-09 09:33:58,888 WARN L860 $PredicateComparison]: unable to prove that (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) is different from true [2021-11-09 09:34:09,468 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-11-09 09:34:11,548 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-11-09 09:34:53,873 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) is different from false [2021-11-09 09:34:55,953 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) is different from true [2021-11-09 09:34:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:34:55,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:34:55,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648601925] [2021-11-09 09:34:55,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648601925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:34:55,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:34:55,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-09 09:34:55,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074382591] [2021-11-09 09:34:55,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:34:55,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:34:55,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:34:55,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-11-09 09:34:55,959 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-09 09:34:58,043 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-09 09:35:00,117 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_inductiveStepHunt_~startState_4 (_ FloatingPoint 8 24))) (or (fp.gt (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode v_ULTIMATE.start_inductiveStepHunt_~startState_4 (fp.div c_currentRoundingMode .cse0 v_ULTIMATE.start_inductiveStepHunt_~startState_4)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.isInfinite v_ULTIMATE.start_inductiveStepHunt_~startState_4) (not (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) v_ULTIMATE.start_inductiveStepHunt_~startState_4)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-09 09:35:02,198 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState))) (or (and (not .cse0) .cse1) (and .cse1 (fp.isInfinite c_ULTIMATE.start_inductiveStepHunt_~startState)) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)))) (or .cse1 (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-09 09:35:04,276 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState))) (or (and (not .cse0) .cse1) (and .cse1 (fp.isInfinite c_ULTIMATE.start_inductiveStepHunt_~startState)) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)))) (or .cse1 (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 09:35:06,349 WARN L838 $PredicateComparison]: unable to prove that (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)) is different from false [2021-11-09 09:35:08,435 WARN L860 $PredicateComparison]: unable to prove that (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) c_ULTIMATE.start_inductiveStepHunt_~startState) (= ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)) c_ULTIMATE.start_inductiveStepHunt_~target~0) (fp.gt (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode c_ULTIMATE.start_inductiveStepHunt_~target~0 c_ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.isNormal c_ULTIMATE.start_inductiveStepHunt_~startState)) is different from true [2021-11-09 09:35:10,522 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (fp.leq ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)) ULTIMATE.start_inductiveStepHunt_~startState) (= c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)))))) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.gt c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-11-09 09:35:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:12,136 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-11-09 09:35:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:35:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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 6 [2021-11-09 09:35:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:12,137 INFO L225 Difference]: With dead ends: 16 [2021-11-09 09:35:12,138 INFO L226 Difference]: Without dead ends: 14 [2021-11-09 09:35:12,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-11-09 09:35:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-09 09:35:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-09 09:35:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-11-09 09:35:12,141 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 6 [2021-11-09 09:35:12,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:12,142 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-11-09 09:35:12,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-09 09:35:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-11-09 09:35:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:35:12,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:12,143 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:12,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:12,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:12,356 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1929124086, now seen corresponding path program 1 times [2021-11-09 09:35:12,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:12,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438319372] [2021-11-09 09:35:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:12,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:12,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:12,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:12,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:35:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:12,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:35:12,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:13,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:35:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:13,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:35:13,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438319372] [2021-11-09 09:35:13,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438319372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:35:13,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:35:13,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 09:35:13,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796177181] [2021-11-09 09:35:13,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:35:13,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:35:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:35:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:35:13,250 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:17,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:35:17,011 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-11-09 09:35:17,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:35:17,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:35:17,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:35:17,012 INFO L225 Difference]: With dead ends: 14 [2021-11-09 09:35:17,013 INFO L226 Difference]: Without dead ends: 12 [2021-11-09 09:35:17,013 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:35:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-09 09:35:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-09 09:35:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 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) [2021-11-09 09:35:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-11-09 09:35:17,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-11-09 09:35:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:35:17,016 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-11-09 09:35:17,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:35:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-11-09 09:35:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-09 09:35:17,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:35:17,018 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:35:17,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:35:17,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:35:17,224 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:35:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:35:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash 326699576, now seen corresponding path program 1 times [2021-11-09 09:35:17,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:35:17,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310400452] [2021-11-09 09:35:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:35:17,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:35:17,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:35:17,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:35:17,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:35:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:35:17,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:35:17,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:35:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:35:27,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:36:04,005 WARN L207 SmtUtils]: Spent 6.85 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-09 09:36:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:36:04,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:36:04,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310400452] [2021-11-09 09:36:04,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310400452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:36:04,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:36:04,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-09 09:36:04,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086338481] [2021-11-09 09:36:04,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:36:04,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:36:04,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:36:04,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2021-11-09 09:36:04,703 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-11-09 09:36:22,172 WARN L207 SmtUtils]: Spent 7.15 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2021-11-09 09:36:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:36:22,418 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-11-09 09:36:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:36:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 [2021-11-09 09:36:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:36:22,455 INFO L225 Difference]: With dead ends: 12 [2021-11-09 09:36:22,455 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 09:36:22,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=40, Invalid=68, Unknown=2, NotChecked=0, Total=110 [2021-11-09 09:36:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 09:36:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 09:36:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:36:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 09:36:22,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-11-09 09:36:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:36:22,456 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 09:36:22,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-11-09 09:36:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 09:36:22,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 09:36:22,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:36:22,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:36:22,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:36:22,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-09 09:36:22,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:36:22,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 09:36:22,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 09:36:22,700 INFO L857 garLoopResultBuilder]: For program point L2-1(lines 2 4) no Hoare annotation was computed. [2021-11-09 09:36:22,701 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 09:36:22,701 INFO L857 garLoopResultBuilder]: For program point L384(line 384) no Hoare annotation was computed. [2021-11-09 09:36:22,701 INFO L857 garLoopResultBuilder]: For program point L384-1(line 384) no Hoare annotation was computed. [2021-11-09 09:36:22,701 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-11-09 09:36:22,702 INFO L860 garLoopResultBuilder]: At program point L399(lines 394 400) the Hoare annotation is: true [2021-11-09 09:36:22,702 INFO L857 garLoopResultBuilder]: For program point L391(line 391) no Hoare annotation was computed. [2021-11-09 09:36:22,708 INFO L857 garLoopResultBuilder]: For program point L391-1(line 391) no Hoare annotation was computed. [2021-11-09 09:36:22,709 INFO L857 garLoopResultBuilder]: For program point L391-3(lines 387 393) no Hoare annotation was computed. [2021-11-09 09:36:22,709 INFO L857 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-11-09 09:36:22,709 INFO L857 garLoopResultBuilder]: For program point L3-2(line 3) no Hoare annotation was computed. [2021-11-09 09:36:22,710 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 09:36:22,710 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 09:36:22,710 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 09:36:22,710 INFO L857 garLoopResultBuilder]: For program point L377(lines 377 385) no Hoare annotation was computed. [2021-11-09 09:36:22,710 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2021-11-09 09:36:22,711 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 392) no Hoare annotation was computed. [2021-11-09 09:36:22,711 INFO L857 garLoopResultBuilder]: For program point L392(line 392) no Hoare annotation was computed. [2021-11-09 09:36:22,711 INFO L857 garLoopResultBuilder]: For program point L2(lines 2 4) no Hoare annotation was computed. [2021-11-09 09:36:22,711 INFO L857 garLoopResultBuilder]: For program point L386(lines 386 393) no Hoare annotation was computed. [2021-11-09 09:36:22,714 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-09 09:36:22,716 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:36:22,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:36:22 BoogieIcfgContainer [2021-11-09 09:36:22,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:36:22,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:36:22,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:36:22,724 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:36:22,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:15" (3/4) ... [2021-11-09 09:36:22,729 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 09:36:22,741 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-09 09:36:22,741 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 09:36:22,742 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:36:22,742 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 09:36:22,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:36:22,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:36:22,799 INFO L168 Benchmark]: Toolchain (without parser) took 192074.48 ms. Allocated memory was 48.2 MB in the beginning and 119.5 MB in the end (delta: 71.3 MB). Free memory was 29.6 MB in the beginning and 43.7 MB in the end (delta: -14.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:36:22,799 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 28.2 MB in the beginning and 28.2 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:36:22,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1036.30 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 29.3 MB in the beginning and 36.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:36:22,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.83 ms. Allocated memory is still 62.9 MB. Free memory was 36.3 MB in the beginning and 33.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:36:22,804 INFO L168 Benchmark]: Boogie Preprocessor took 41.77 ms. Allocated memory is still 62.9 MB. Free memory was 33.7 MB in the beginning and 32.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:36:22,806 INFO L168 Benchmark]: RCFGBuilder took 3603.76 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.1 MB in the beginning and 48.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-11-09 09:36:22,807 INFO L168 Benchmark]: TraceAbstraction took 187256.67 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:36:22,807 INFO L168 Benchmark]: Witness Printer took 73.67 ms. Allocated memory is still 119.5 MB. Free memory was 45.8 MB in the beginning and 43.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:36:22,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 28.2 MB in the beginning and 28.2 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1036.30 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 29.3 MB in the beginning and 36.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.83 ms. Allocated memory is still 62.9 MB. Free memory was 36.3 MB in the beginning and 33.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.77 ms. Allocated memory is still 62.9 MB. Free memory was 33.7 MB in the beginning and 32.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3603.76 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.1 MB in the beginning and 48.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 187256.67 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. * Witness Printer took 73.67 ms. Allocated memory is still 119.5 MB. Free memory was 45.8 MB in the beginning and 43.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 187.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 37.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 20 SDslu, 11 SDs, 0 SdLazy, 40 SolverSat, 0 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 73.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 146.0s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 5 QuantifiedInterpolants, 496 SizeOfPredicates, 15 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-09 09:36:23,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b67704-457b-4b81-9059-5e68f6d261e7/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE