./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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_34e840f3-b9cf-4eff-ad80-832a101c1932/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 d2b3524191b4b5d8cc9b9fdd0c6bd6c6c9764be59e4abe5528711fb5f8da6697 --- 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 12:08:53,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:08:53,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:08:53,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:08:53,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:08:53,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:08:53,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:08:53,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:08:53,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:08:53,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:08:53,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:08:53,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:08:53,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:08:53,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:08:53,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:08:53,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:08:53,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:08:53,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:08:53,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:08:53,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:08:53,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:08:53,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:08:53,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:08:53,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:08:53,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:08:53,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:08:53,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:08:53,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:08:53,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:08:53,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:08:53,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:08:53,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:08:53,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:08:53,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:08:53,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:08:53,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:08:53,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:08:53,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:08:53,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:08:53,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:08:53,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:08:53,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:08:53,410 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:08:53,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:08:53,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:08:53,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:08:53,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:08:53,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:08:53,411 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:08:53,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:08:53,411 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:08:53,412 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:08:53,412 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:08:53,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:08:53,413 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:08:53,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:08:53,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:08:53,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:08:53,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:08:53,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:08:53,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:08:53,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:08:53,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:08:53,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:08:53,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:08:53,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:08:53,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:08:53,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:08:53,415 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_34e840f3-b9cf-4eff-ad80-832a101c1932/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2b3524191b4b5d8cc9b9fdd0c6bd6c6c9764be59e4abe5528711fb5f8da6697 [2022-12-14 12:08:53,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:08:53,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:08:53,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:08:53,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:08:53,606 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:08:53,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i [2022-12-14 12:08:56,085 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:08:56,214 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:08:56,214 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i [2022-12-14 12:08:56,219 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data/92282dc15/fb10b6484e7e46bdbd97723e735f95f4/FLAG72bebabb6 [2022-12-14 12:08:56,637 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data/92282dc15/fb10b6484e7e46bdbd97723e735f95f4 [2022-12-14 12:08:56,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:08:56,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:08:56,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:08:56,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:08:56,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:08:56,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:08:56" (1/1) ... [2022-12-14 12:08:56,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b0c0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:08:56, skipping insertion in model container [2022-12-14 12:08:56,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:08:56" (1/1) ... [2022-12-14 12:08:56,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:08:56,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:08:56,772 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_34e840f3-b9cf-4eff-ad80-832a101c1932/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i[948,961] [2022-12-14 12:08:56,780 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 12:08:56,784 INFO L158 Benchmark]: Toolchain (without parser) took 142.44ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 132.1MB in the end (delta: -11.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 12:08:56,784 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:08:56,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.93ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 132.1MB in the end (delta: -11.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 12:08:56,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 140.93ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 132.1MB in the end (delta: -11.7MB). Peak memory consumption was 6.3MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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_34e840f3-b9cf-4eff-ad80-832a101c1932/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 d2b3524191b4b5d8cc9b9fdd0c6bd6c6c9764be59e4abe5528711fb5f8da6697 --- 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 12:08:58,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:08:58,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:08:58,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:08:58,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:08:58,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:08:58,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:08:58,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:08:58,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:08:58,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:08:58,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:08:58,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:08:58,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:08:58,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:08:58,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:08:58,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:08:58,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:08:58,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:08:58,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:08:58,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:08:58,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:08:58,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:08:58,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:08:58,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:08:58,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:08:58,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:08:58,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:08:58,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:08:58,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:08:58,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:08:58,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:08:58,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:08:58,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:08:58,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:08:58,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:08:58,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:08:58,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:08:58,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:08:58,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:08:58,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:08:58,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:08:58,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 12:08:58,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:08:58,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:08:58,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:08:58,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:08:58,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:08:58,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:08:58,168 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:08:58,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:08:58,168 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:08:58,169 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:08:58,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:08:58,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:08:58,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:08:58,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 12:08:58,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:08:58,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:08:58,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:08:58,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:08:58,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:08:58,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 12:08:58,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:08:58,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:08:58,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:08:58,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:08:58,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:08:58,172 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 12:08:58,172 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 12:08:58,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:08:58,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:08:58,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 12:08:58,172 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_34e840f3-b9cf-4eff-ad80-832a101c1932/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2b3524191b4b5d8cc9b9fdd0c6bd6c6c9764be59e4abe5528711fb5f8da6697 [2022-12-14 12:08:58,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:08:58,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:08:58,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:08:58,390 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:08:58,390 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:08:58,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i [2022-12-14 12:09:00,933 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:09:01,085 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:09:01,086 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i [2022-12-14 12:09:01,092 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data/30432785e/d753d8af149b40689c8f74c858ad7038/FLAG1872ad166 [2022-12-14 12:09:01,481 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/data/30432785e/d753d8af149b40689c8f74c858ad7038 [2022-12-14 12:09:01,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:09:01,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:09:01,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:09:01,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:09:01,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:09:01,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be3f72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01, skipping insertion in model container [2022-12-14 12:09:01,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:09:01,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:09:01,626 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_34e840f3-b9cf-4eff-ad80-832a101c1932/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i[948,961] [2022-12-14 12:09:01,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:09:01,657 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:09:01,667 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_34e840f3-b9cf-4eff-ad80-832a101c1932/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound1.i[948,961] [2022-12-14 12:09:01,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:09:01,688 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:09:01,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01 WrapperNode [2022-12-14 12:09:01,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:09:01,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:09:01,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:09:01,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:09:01,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,732 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2022-12-14 12:09:01,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:09:01,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:09:01,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:09:01,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:09:01,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,757 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:09:01,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:09:01,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:09:01,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:09:01,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (1/1) ... [2022-12-14 12:09:01,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:09:01,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:09:01,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:09:01,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:09:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:09:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 12:09:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 12:09:01,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 12:09:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:09:01,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:09:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 12:09:01,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 12:09:01,876 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:09:01,877 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:09:04,642 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:09:04,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:09:04,646 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:09:04,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:09:04 BoogieIcfgContainer [2022-12-14 12:09:04,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:09:04,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:09:04,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:09:04,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:09:04,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:09:01" (1/3) ... [2022-12-14 12:09:04,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d9749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:09:04, skipping insertion in model container [2022-12-14 12:09:04,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:09:01" (2/3) ... [2022-12-14 12:09:04,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d9749a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:09:04, skipping insertion in model container [2022-12-14 12:09:04,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:09:04" (3/3) ... [2022-12-14 12:09:04,657 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_valuebound1.i [2022-12-14 12:09:04,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:09:04,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:09:04,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:09:04,709 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;@65071237, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:09:04,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:09:04,712 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 12:09:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 12:09:04,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:04,718 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 12:09:04,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:09:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:04,722 INFO L85 PathProgramCache]: Analyzing trace with hash 919095715, now seen corresponding path program 1 times [2022-12-14 12:09:04,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:09:04,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090054650] [2022-12-14 12:09:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:04,731 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 12:09:04,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:09:04,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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 12:09:04,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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 12:09:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:05,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 12:09:05,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:09:05,075 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 12:09:05,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:09:05,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:09:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090054650] [2022-12-14 12:09:05,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090054650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:09:05,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:09:05,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:09:05,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614044006] [2022-12-14 12:09:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:09:05,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:09:05,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:09:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:09:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:09:05,106 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 12:09:05,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:05,124 INFO L93 Difference]: Finished difference Result 59 states and 92 transitions. [2022-12-14 12:09:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:09:05,126 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 12:09:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:05,131 INFO L225 Difference]: With dead ends: 59 [2022-12-14 12:09:05,131 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 12:09:05,134 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 12:09:05,136 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 12:09:05,137 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 12:09:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 12:09:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 12:09:05,166 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 12:09:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-12-14 12:09:05,168 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 29 [2022-12-14 12:09:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:05,168 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-12-14 12:09:05,168 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 12:09:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-12-14 12:09:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 12:09:05,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:09:05,170 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 12:09:05,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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 12:09:05,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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 12:09:05,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:09:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:09:05,376 INFO L85 PathProgramCache]: Analyzing trace with hash -960358297, now seen corresponding path program 1 times [2022-12-14 12:09:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:09:05,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40075264] [2022-12-14 12:09:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:05,380 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 12:09:05,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:09:05,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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 12:09:05,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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 12:09:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:05,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:09:05,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:09:06,104 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 12:09:06,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:09:07,116 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 12:09:07,117 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:09:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40075264] [2022-12-14 12:09:07,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40075264] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:09:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1594584735] [2022-12-14 12:09:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:07,118 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:09:07,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:09:07,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:09:07,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 12:09:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:11,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:09:11,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:09:11,487 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 12:09:11,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:09:12,249 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 12:09:12,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1594584735] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:09:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904504287] [2022-12-14 12:09:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:09:12,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:09:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:09:12,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:09:12,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:09:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:09:14,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:09:14,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:09:14,691 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 12:09:14,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:09:15,438 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 12:09:15,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904504287] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:09:15,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:09:15,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 7 [2022-12-14 12:09:15,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032179825] [2022-12-14 12:09:15,440 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:09:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 12:09:15,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:09:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 12:09:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:09:15,442 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 12:09:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:09:15,794 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-12-14 12:09:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:09:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 29 [2022-12-14 12:09:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:09:15,795 INFO L225 Difference]: With dead ends: 27 [2022-12-14 12:09:15,795 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 12:09:15,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:09:15,798 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:09:15,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:09:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 12:09:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 12:09:15,800 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 12:09:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 12:09:15,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-12-14 12:09:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:09:15,800 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 12:09:15,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 12:09:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 12:09:15,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 12:09:15,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 12:09:15,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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)] Ended with exit code 0 [2022-12-14 12:09:16,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:09:16,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 12:09:16,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:09:16,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 12:09:16,504 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) [2022-12-14 12:09:16,504 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 12:09:16,504 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 70) no Hoare annotation was computed. [2022-12-14 12:09:16,504 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 41 71) the Hoare annotation is: false [2022-12-14 12:09:16,504 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: false [2022-12-14 12:09:16,504 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: false [2022-12-14 12:09:16,505 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 12:09:16,505 INFO L895 garLoopResultBuilder]: At program point L42-1(line 42) the Hoare annotation is: false [2022-12-14 12:09:16,505 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 26 73) the Hoare annotation is: true [2022-12-14 12:09:16,505 INFO L899 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2022-12-14 12:09:16,505 INFO L902 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: true [2022-12-14 12:09:16,505 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 12:09:16,505 INFO L895 garLoopResultBuilder]: At program point L32-1(line 32) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) [2022-12-14 12:09:16,506 INFO L902 garLoopResultBuilder]: At program point L30(line 30) the Hoare annotation is: true [2022-12-14 12:09:16,506 INFO L899 garLoopResultBuilder]: For program point L30-1(line 30) no Hoare annotation was computed. [2022-12-14 12:09:16,506 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 12:09:16,506 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 70) no Hoare annotation was computed. [2022-12-14 12:09:16,506 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 70) no Hoare annotation was computed. [2022-12-14 12:09:16,506 INFO L899 garLoopResultBuilder]: For program point L45(lines 41 71) no Hoare annotation was computed. [2022-12-14 12:09:16,506 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: false [2022-12-14 12:09:16,506 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 71) no Hoare annotation was computed. [2022-12-14 12:09:16,507 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-12-14 12:09:16,507 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2022-12-14 12:09:16,507 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 17) the Hoare annotation is: true [2022-12-14 12:09:16,507 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2022-12-14 12:09:16,507 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2022-12-14 12:09:16,507 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2022-12-14 12:09:16,507 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2022-12-14 12:09:16,507 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-12-14 12:09:16,507 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-12-14 12:09:16,508 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-12-14 12:09:16,511 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 12:09:16,513 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:09:16,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:09:16 BoogieIcfgContainer [2022-12-14 12:09:16,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:09:16,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:09:16,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:09:16,522 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:09:16,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:09:04" (3/4) ... [2022-12-14 12:09:16,527 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 12:09:16,534 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 12:09:16,534 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 12:09:16,538 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-14 12:09:16,539 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 12:09:16,539 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 12:09:16,539 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 12:09:16,539 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 12:09:16,572 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 12:09:16,573 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:09:16,573 INFO L158 Benchmark]: Toolchain (without parser) took 15089.11ms. Allocated memory is still 65.0MB. Free memory was 43.7MB in the beginning and 37.0MB in the end (delta: 6.7MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-12-14 12:09:16,573 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory is still 28.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:09:16,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.26ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 31.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 12:09:16,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.77ms. Allocated memory is still 65.0MB. Free memory was 31.1MB in the beginning and 45.1MB in the end (delta: -14.1MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2022-12-14 12:09:16,574 INFO L158 Benchmark]: Boogie Preprocessor took 28.02ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 43.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:09:16,575 INFO L158 Benchmark]: RCFGBuilder took 2885.95ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 28.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 12:09:16,575 INFO L158 Benchmark]: TraceAbstraction took 11868.59ms. Allocated memory is still 65.0MB. Free memory was 44.8MB in the beginning and 40.0MB in the end (delta: 4.8MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-12-14 12:09:16,575 INFO L158 Benchmark]: Witness Printer took 50.57ms. Allocated memory is still 65.0MB. Free memory was 40.0MB in the beginning and 37.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 12:09:16,577 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 50.3MB. Free memory is still 28.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.26ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 31.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.77ms. Allocated memory is still 65.0MB. Free memory was 31.1MB in the beginning and 45.1MB in the end (delta: -14.1MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.02ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 43.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2885.95ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 28.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11868.59ms. Allocated memory is still 65.0MB. Free memory was 44.8MB in the beginning and 40.0MB in the end (delta: 4.8MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 50.57ms. Allocated memory is still 65.0MB. Free memory was 40.0MB in the beginning and 37.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. 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: 11.8s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 49 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s 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, 6.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 13 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 12:09:16,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e840f3-b9cf-4eff-ad80-832a101c1932/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