./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a67a238aa48b8a3ec66dc98385c4a2787b829a5e88d431b41ae6ef24ee0832f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:51:39,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:51:39,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:51:39,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:51:39,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:51:39,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:51:39,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:51:39,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:51:39,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:51:39,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:51:39,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:51:39,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:51:39,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:51:39,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:51:39,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:51:39,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:51:39,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:51:39,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:51:39,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:51:39,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:51:39,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:51:39,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:51:39,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:51:39,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:51:39,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:51:39,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:51:39,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:51:39,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:51:39,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:51:39,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:51:39,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:51:39,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:51:39,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:51:39,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:51:39,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:51:39,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:51:39,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:51:39,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:51:39,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:51:39,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:51:39,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:51:39,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:51:39,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:51:39,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:51:39,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:51:39,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:51:39,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:51:39,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:51:39,467 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:51:39,467 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:51:39,467 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:51:39,467 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:51:39,467 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:51:39,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:51:39,468 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:51:39,468 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:51:39,468 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:51:39,468 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:51:39,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:51:39,469 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:51:39,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:51:39,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:51:39,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:51:39,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:51:39,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:51:39,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:51:39,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:51:39,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:51:39,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:51:39,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:51:39,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:51:39,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:51:39,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:51:39,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:51:39,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:51:39,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:51:39,472 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:51:39,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:51:39,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:51:39,473 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:51:39,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:51:39,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:51:39,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:51:39,474 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_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a67a238aa48b8a3ec66dc98385c4a2787b829a5e88d431b41ae6ef24ee0832f [2022-12-14 15:51:39,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:51:39,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:51:39,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:51:39,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:51:39,686 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:51:39,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2022-12-14 15:51:42,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:51:42,421 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:51:42,422 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2022-12-14 15:51:42,427 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data/721077cef/8e7f954a20da405ab951388996dd3116/FLAG95e027273 [2022-12-14 15:51:42,438 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data/721077cef/8e7f954a20da405ab951388996dd3116 [2022-12-14 15:51:42,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:51:42,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:51:42,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:51:42,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:51:42,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:51:42,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:42" (1/1) ... [2022-12-14 15:51:42,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365dde7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:42, skipping insertion in model container [2022-12-14 15:51:42,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:42" (1/1) ... [2022-12-14 15:51:42,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:51:42,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:51:42,569 WARN L237 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_64391031-17b0-432b-9fdc-0897ff66bd55/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[948,961] [2022-12-14 15:51:42,578 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:806) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2063) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) 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: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:1420) 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:1094) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1496) 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:3320) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2395) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) 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) [2022-12-14 15:51:42,582 INFO L158 Benchmark]: Toolchain (without parser) took 139.67ms. Allocated memory is still 113.2MB. Free memory was 79.9MB in the beginning and 70.8MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 15:51:42,582 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:51:42,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.09ms. Allocated memory is still 113.2MB. Free memory was 79.5MB in the beginning and 70.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 15:51:42,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.09ms. Allocated memory is still 113.2MB. Free memory was 79.5MB in the beginning and 70.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:806) 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a67a238aa48b8a3ec66dc98385c4a2787b829a5e88d431b41ae6ef24ee0832f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:51:44,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:51:44,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:51:44,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:51:44,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:51:44,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:51:44,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:51:44,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:51:44,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:51:44,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:51:44,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:51:44,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:51:44,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:51:44,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:51:44,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:51:44,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:51:44,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:51:44,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:51:44,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:51:44,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:51:44,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:51:44,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:51:44,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:51:44,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:51:44,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:51:44,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:51:44,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:51:44,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:51:44,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:51:44,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:51:44,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:51:44,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:51:44,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:51:44,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:51:44,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:51:44,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:51:44,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:51:44,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:51:44,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:51:44,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:51:44,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:51:44,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 15:51:44,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:51:44,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:51:44,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:51:44,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:51:44,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:51:44,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:51:44,113 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:51:44,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:51:44,113 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:51:44,113 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:51:44,113 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:51:44,113 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:51:44,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:51:44,114 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:51:44,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:51:44,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:51:44,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:51:44,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:51:44,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:51:44,116 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:51:44,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:51:44,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:51:44,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:51:44,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:51:44,116 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_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a67a238aa48b8a3ec66dc98385c4a2787b829a5e88d431b41ae6ef24ee0832f [2022-12-14 15:51:44,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:51:44,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:51:44,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:51:44,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:51:44,346 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:51:44,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2022-12-14 15:51:46,838 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:51:46,994 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:51:46,994 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i [2022-12-14 15:51:46,999 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data/91c6146b8/8fd12c7307a742779a2fa99bcdda97a2/FLAG402af3ed9 [2022-12-14 15:51:47,014 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/data/91c6146b8/8fd12c7307a742779a2fa99bcdda97a2 [2022-12-14 15:51:47,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:51:47,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:51:47,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:51:47,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:51:47,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:51:47,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c434600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47, skipping insertion in model container [2022-12-14 15:51:47,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:51:47,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:51:47,200 WARN L237 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_64391031-17b0-432b-9fdc-0897ff66bd55/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[948,961] [2022-12-14 15:51:47,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:51:47,231 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:51:47,241 WARN L237 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_64391031-17b0-432b-9fdc-0897ff66bd55/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound2.i[948,961] [2022-12-14 15:51:47,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:51:47,263 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:51:47,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47 WrapperNode [2022-12-14 15:51:47,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:51:47,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:51:47,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:51:47,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:51:47,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,291 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2022-12-14 15:51:47,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:51:47,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:51:47,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:51:47,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:51:47,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,321 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:51:47,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:51:47,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:51:47,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:51:47,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (1/1) ... [2022-12-14 15:51:47,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:51:47,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:51:47,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:51:47,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:51:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:51:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 15:51:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 15:51:47,395 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 15:51:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:51:47,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:51:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 15:51:47,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 15:51:47,462 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:51:47,464 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:51:50,261 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:51:50,269 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:51:50,269 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:51:50,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:50 BoogieIcfgContainer [2022-12-14 15:51:50,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:51:50,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:51:50,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:51:50,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:51:50,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:51:47" (1/3) ... [2022-12-14 15:51:50,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef34c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:50, skipping insertion in model container [2022-12-14 15:51:50,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:51:47" (2/3) ... [2022-12-14 15:51:50,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef34c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:51:50, skipping insertion in model container [2022-12-14 15:51:50,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:50" (3/3) ... [2022-12-14 15:51:50,279 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_valuebound2.i [2022-12-14 15:51:50,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:51:50,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:51:50,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:51:50,339 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@698000eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:51:50,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:51:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 15:51:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 15:51:50,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:51:50,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:51:50,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:51:50,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:51:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash 919095715, now seen corresponding path program 1 times [2022-12-14 15:51:50,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:51:50,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867963932] [2022-12-14 15:51:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:50,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:51:50,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:51:50,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:51:50,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 15:51:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:50,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 15:51:50,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:51:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 15:51:50,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:51:50,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:51:50,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867963932] [2022-12-14 15:51:50,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867963932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:51:50,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:51:50,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:51:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20195354] [2022-12-14 15:51:50,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:51:50,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:51:50,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:51:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:51:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:51:50,740 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 15:51:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:51:50,755 INFO L93 Difference]: Finished difference Result 59 states and 92 transitions. [2022-12-14 15:51:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:51:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-12-14 15:51:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:51:50,762 INFO L225 Difference]: With dead ends: 59 [2022-12-14 15:51:50,762 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 15:51:50,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:51:50,766 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 15:51:50,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 15:51:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 15:51:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 15:51:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 15:51:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-12-14 15:51:50,792 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 29 [2022-12-14 15:51:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:51:50,792 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-12-14 15:51:50,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 15:51:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-12-14 15:51:50,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 15:51:50,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:51:50,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:51:50,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:51:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:51:50,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:51:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:51:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash -960358297, now seen corresponding path program 1 times [2022-12-14 15:51:51,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:51:51,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468382719] [2022-12-14 15:51:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:51,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:51:51,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:51:51,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:51:51,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 15:51:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:51,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:51:51,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:51:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:51:51,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:51:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:51:52,631 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:51:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468382719] [2022-12-14 15:51:52,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468382719] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:51:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1257634250] [2022-12-14 15:51:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:52,632 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:51:52,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:51:52,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:51:52,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 15:51:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:51:56,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 15:51:56,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:51:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:51:57,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:51:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:51:57,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1257634250] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:51:57,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124374893] [2022-12-14 15:51:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:51:57,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:51:57,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:51:57,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:51:57,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:51:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:52:00,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 15:52:00,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:52:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:52:00,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:52:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 15:52:01,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124374893] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:52:01,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:52:01,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 6 [2022-12-14 15:52:01,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945468544] [2022-12-14 15:52:01,006 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:52:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 15:52:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:52:01,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 15:52:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 15:52:01,008 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 15:52:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:52:01,277 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-12-14 15:52:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:52:01,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-12-14 15:52:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:52:01,279 INFO L225 Difference]: With dead ends: 27 [2022-12-14 15:52:01,279 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 15:52:01,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:52:01,281 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:52:01,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 15:52:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 15:52:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 15:52:01,283 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) [2022-12-14 15:52:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 15:52:01,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-12-14 15:52:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:52:01,283 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 15:52:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 15:52:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 15:52:01,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 15:52:01,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:52:01,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 15:52:01,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-14 15:52:01,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:52:01,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:52:01,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 15:52:01,982 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv2 32)) [2022-12-14 15:52:01,982 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 15:52:01,983 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 70) no Hoare annotation was computed. [2022-12-14 15:52:01,983 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 41 71) the Hoare annotation is: false [2022-12-14 15:52:01,983 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: false [2022-12-14 15:52:01,983 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: false [2022-12-14 15:52:01,983 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 15:52:01,984 INFO L895 garLoopResultBuilder]: At program point L42-1(line 42) the Hoare annotation is: false [2022-12-14 15:52:01,984 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 26 73) the Hoare annotation is: true [2022-12-14 15:52:01,984 INFO L899 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2022-12-14 15:52:01,984 INFO L902 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: true [2022-12-14 15:52:01,984 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 15:52:01,984 INFO L895 garLoopResultBuilder]: At program point L32-1(line 32) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv2 32)) [2022-12-14 15:52:01,984 INFO L902 garLoopResultBuilder]: At program point L30(line 30) the Hoare annotation is: true [2022-12-14 15:52:01,984 INFO L899 garLoopResultBuilder]: For program point L30-1(line 30) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 70) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 70) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L899 garLoopResultBuilder]: For program point L45(lines 41 71) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: false [2022-12-14 15:52:01,985 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 71) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2022-12-14 15:52:01,985 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2022-12-14 15:52:01,986 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2022-12-14 15:52:01,986 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2022-12-14 15:52:01,986 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2022-12-14 15:52:01,986 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2022-12-14 15:52:01,986 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-12-14 15:52:01,986 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-12-14 15:52:01,986 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-12-14 15:52:01,989 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 15:52:01,991 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:52:01,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:52:01 BoogieIcfgContainer [2022-12-14 15:52:01,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:52:02,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:52:02,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:52:02,000 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:52:02,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:51:50" (3/4) ... [2022-12-14 15:52:02,004 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 15:52:02,011 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 15:52:02,011 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 15:52:02,015 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-14 15:52:02,019 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 15:52:02,019 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 15:52:02,019 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 15:52:02,019 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 15:52:02,054 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 15:52:02,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:52:02,055 INFO L158 Benchmark]: Toolchain (without parser) took 15037.25ms. Allocated memory is still 69.2MB. Free memory was 48.0MB in the beginning and 45.7MB in the end (delta: 2.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2022-12-14 15:52:02,055 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 36.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:52:02,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.49ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 35.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 15:52:02,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.60ms. Allocated memory is still 69.2MB. Free memory was 35.2MB in the beginning and 33.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:52:02,056 INFO L158 Benchmark]: Boogie Preprocessor took 33.24ms. Allocated memory is still 69.2MB. Free memory was 33.4MB in the beginning and 49.7MB in the end (delta: -16.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-12-14 15:52:02,056 INFO L158 Benchmark]: RCFGBuilder took 2940.22ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 34.5MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 15:52:02,057 INFO L158 Benchmark]: TraceAbstraction took 11725.51ms. Allocated memory is still 69.2MB. Free memory was 33.8MB in the beginning and 25.4MB in the end (delta: 8.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-12-14 15:52:02,057 INFO L158 Benchmark]: Witness Printer took 54.47ms. Allocated memory is still 69.2MB. Free memory was 25.4MB in the beginning and 45.7MB in the end (delta: -20.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 15:52:02,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 36.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.49ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 35.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.60ms. Allocated memory is still 69.2MB. Free memory was 35.2MB in the beginning and 33.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.24ms. Allocated memory is still 69.2MB. Free memory was 33.4MB in the beginning and 49.7MB in the end (delta: -16.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2940.22ms. Allocated memory is still 69.2MB. Free memory was 49.7MB in the beginning and 34.5MB in the end (delta: 15.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11725.51ms. Allocated memory is still 69.2MB. Free memory was 33.8MB in the beginning and 25.4MB in the end (delta: 8.3MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Witness Printer took 54.47ms. Allocated memory is still 69.2MB. Free memory was 25.4MB in the beginning and 45.7MB in the end (delta: -20.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 21]: 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 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.7s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 49 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 25 PreInvPairs, 29 NumberOfFragments, 16 HoareAnnotationTreeSize, 25 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 346 SizeOfPredicates, 10 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 150/168 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 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-12-14 15:52:02,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64391031-17b0-432b-9fdc-0897ff66bd55/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE