./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7 --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 d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:58:56,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:58:56,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:58:56,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:58:56,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:58:56,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:58:56,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:58:56,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:58:56,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:58:56,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:58:56,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:58:56,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:58:56,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:58:56,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:58:56,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:58:56,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:58:56,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:58:56,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:58:56,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:58:56,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:58:56,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:58:56,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:58:56,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:58:56,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:58:56,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:58:56,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:58:56,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:58:56,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:58:56,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:58:56,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:58:56,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:58:56,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:58:56,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:58:56,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:58:56,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:58:56,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:58:56,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:58:56,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:58:56,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:58:56,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:58:56,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:58:56,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:58:56,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:58:56,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:58:56,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:58:56,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:58:56,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:58:56,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:58:56,886 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:58:56,887 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:58:56,887 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:58:56,887 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:58:56,887 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:58:56,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:58:56,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:58:56,888 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:58:56,889 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:58:56,889 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:58:56,889 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:58:56,889 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:58:56,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:58:56,891 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:58:56,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:58:56,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:58:56,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:58:56,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:58:56,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:58:56,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:58:56,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:58:56,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:58:56,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:58:56,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:58:56,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:58:56,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:58:56,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:58:56,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:58:56,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:58:56,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:58:56,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:58:56,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:58:56,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:58:56,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:58:56,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:58:56,897 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 [2021-11-25 19:58:57,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:58:57,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:58:57,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:58:57,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:58:57,282 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:58:57,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-25 19:58:57,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/ef12c104f/e0b8230d7cbb4816afe70c65f76e1a20/FLAG8f790a377 [2021-11-25 19:58:57,904 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:58:57,905 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-25 19:58:57,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/ef12c104f/e0b8230d7cbb4816afe70c65f76e1a20/FLAG8f790a377 [2021-11-25 19:58:58,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/ef12c104f/e0b8230d7cbb4816afe70c65f76e1a20 [2021-11-25 19:58:58,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:58:58,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:58:58,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:58:58,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:58:58,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:58:58,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:58:58" (1/1) ... [2021-11-25 19:58:58,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f3c5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:58:58, skipping insertion in model container [2021-11-25 19:58:58,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:58:58" (1/1) ... [2021-11-25 19:58:58,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:58:58,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:58:58,539 WARN L230 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_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i[948,961] [2021-11-25 19:58:58,554 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1434) 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:730) 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:1385) 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:1069) 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:1456) 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:3268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:595) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:58:58,560 INFO L158 Benchmark]: Toolchain (without parser) took 283.16ms. Allocated memory is still 115.3MB. Free memory was 74.5MB in the beginning and 90.4MB in the end (delta: -15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:58:58,561 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 91.4MB in the end (delta: 127.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:58:58,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.27ms. Allocated memory is still 115.3MB. Free memory was 74.3MB in the beginning and 90.4MB in the end (delta: -16.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:58:58,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 91.4MB in the end (delta: 127.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.27ms. Allocated memory is still 115.3MB. Free memory was 74.3MB in the beginning and 90.4MB in the end (delta: -16.1MB). 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:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7 --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 d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:59:01,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:59:01,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:59:01,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:59:01,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:59:01,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:59:01,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:59:01,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:59:01,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:59:01,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:59:01,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:59:01,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:59:01,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:59:01,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:59:01,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:59:01,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:59:01,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:59:01,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:59:01,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:59:01,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:59:01,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:59:01,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:59:01,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:59:01,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:59:01,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:59:01,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:59:01,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:59:01,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:59:01,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:59:01,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:59:01,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:59:01,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:59:01,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:59:01,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:59:01,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:59:01,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:59:01,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:59:01,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:59:01,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:59:01,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:59:01,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:59:01,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:59:01,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:59:01,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:59:01,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:59:01,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:59:01,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:59:01,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:59:01,520 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:59:01,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:59:01,521 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:59:01,521 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:59:01,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:59:01,523 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:59:01,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:59:01,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:59:01,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:59:01,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:59:01,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:59:01,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:59:01,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:59:01,527 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:59:01,527 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:59:01,527 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:59:01,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:59:01,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:59:01,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:59:01,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:59:01,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:59:01,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:59:01,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:59:01,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:01,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:59:01,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:59:01,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:59:01,531 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:59:01,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:59:01,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:59:01,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:59:01,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:59:01,533 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_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d57b5e0932e2ae1d13ff96f4ee516144e471d697de2e183c71b602b9615c31f3 [2021-11-25 19:59:02,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:59:02,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:59:02,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:59:02,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:59:02,038 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:59:02,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-25 19:59:02,118 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/8c4156c7e/2a6f4a3df83d42aabfa977374192da7d/FLAG644d66cd8 [2021-11-25 19:59:02,752 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:59:02,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i [2021-11-25 19:59:02,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/8c4156c7e/2a6f4a3df83d42aabfa977374192da7d/FLAG644d66cd8 [2021-11-25 19:59:03,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/data/8c4156c7e/2a6f4a3df83d42aabfa977374192da7d [2021-11-25 19:59:03,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:59:03,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:59:03,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:03,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:59:03,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:59:03,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27da62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03, skipping insertion in model container [2021-11-25 19:59:03,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:59:03,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:59:03,461 WARN L230 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_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i[948,961] [2021-11-25 19:59:03,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:03,571 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:59:03,605 WARN L230 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_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound10.i[948,961] [2021-11-25 19:59:03,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:59:03,675 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:59:03,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03 WrapperNode [2021-11-25 19:59:03,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:59:03,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:03,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:59:03,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:59:03,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,732 INFO L137 Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2021-11-25 19:59:03,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:59:03,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:59:03,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:59:03,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:59:03,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:59:03,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:59:03,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:59:03,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:59:03,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (1/1) ... [2021-11-25 19:59:03,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:59:03,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:59:03,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:59:03,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:59:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:59:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:59:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:59:03,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:59:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:59:03,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:59:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:59:03,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:59:04,011 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:59:04,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:59:07,017 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:59:07,025 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:59:07,025 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:59:07,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:07 BoogieIcfgContainer [2021-11-25 19:59:07,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:59:07,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:59:07,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:59:07,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:59:07,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:59:03" (1/3) ... [2021-11-25 19:59:07,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f18c88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:07, skipping insertion in model container [2021-11-25 19:59:07,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:59:03" (2/3) ... [2021-11-25 19:59:07,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f18c88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:59:07, skipping insertion in model container [2021-11-25 19:59:07,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:59:07" (3/3) ... [2021-11-25 19:59:07,037 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound10.i [2021-11-25 19:59:07,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:59:07,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:59:07,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:59:07,110 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:59:07,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:59:07,129 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) [2021-11-25 19:59:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 19:59:07,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:07,137 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:07,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 919095715, now seen corresponding path program 1 times [2021-11-25 19:59:07,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771640500] [2021-11-25 19:59:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:07,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:07,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:07,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:07,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:59:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:07,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:59:07,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:59:08,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:59:08,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:59:08,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771640500] [2021-11-25 19:59:08,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771640500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:59:08,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:59:08,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:59:08,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746394848] [2021-11-25 19:59:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:59:08,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:59:08,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:59:08,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:59:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:59:08,174 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) [2021-11-25 19:59:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:59:08,201 INFO L93 Difference]: Finished difference Result 59 states and 92 transitions. [2021-11-25 19:59:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:59:08,204 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 [2021-11-25 19:59:08,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:59:08,213 INFO L225 Difference]: With dead ends: 59 [2021-11-25 19:59:08,213 INFO L226 Difference]: Without dead ends: 27 [2021-11-25 19:59:08,217 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:59:08,222 INFO L933 BasicCegarLoop]: 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 [2021-11-25 19:59:08,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:59:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-25 19:59:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-25 19:59:08,279 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) [2021-11-25 19:59:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-11-25 19:59:08,283 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 29 [2021-11-25 19:59:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:59:08,284 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-11-25 19:59:08,284 INFO L471 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) [2021-11-25 19:59:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-11-25 19:59:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 19:59:08,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:59:08,287 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:59:08,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:59:08,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:59:08,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:59:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:59:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash -960358297, now seen corresponding path program 1 times [2021-11-25 19:59:08,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:59:08,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236614011] [2021-11-25 19:59:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:59:08,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:59:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:59:08,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:59:08,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:59:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:59:09,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:59:09,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:59:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 19:59:18,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:59:27,018 WARN L860 $PredicateComparison]: unable to prove that (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul .cse1 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul .cse0 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) is different from true [2021-11-25 19:59:36,220 WARN L860 $PredicateComparison]: unable to prove that (or (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul .cse1 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul .cse0 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) is different from true [2021-11-25 19:59:48,754 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse3 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv4 32) (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32))))) is different from true [2021-11-25 20:00:12,155 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (let ((.cse1 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse0 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse3 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse1) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (bvmul (_ bv4 32) (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))))) (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|)) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (= c_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-11-25 20:00:34,048 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1| (_ BitVec 32))) (or (not (bvule |ULTIMATE.start_main_~a~0#1| (_ bv10 32))) (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (= (let ((.cse2 (bvadd |ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) |ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2) |ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul .cse1 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1|)) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul .cse0 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~a~0#1|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)))) is different from true [2021-11-25 20:00:34,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:00:34,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236614011] [2021-11-25 20:00:34,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236614011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:00:34,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346041241] [2021-11-25 20:00:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:00:34,051 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:00:34,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:00:34,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:00:34,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-25 20:00:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:00:42,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 20:00:42,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:00:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 20:00:49,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:01:11,842 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)) (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|) (let ((.cse3 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse3)) (.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|))) (bvadd (bvmul (_ bv8 32) .cse0) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse2 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse3) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvmul (_ bv4 32) (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvneg (bvmul (bvmul .cse0 (_ bv4 32)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|))))))))) is different from true [2021-11-25 20:01:35,056 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ BitVec 32))) (or (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv2 32)) (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11|) (let ((.cse3 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ bv4294967294 32)))) (let ((.cse1 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse3)) (.cse2 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|))) (.cse0 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|))) (bvadd (bvmul (_ bv8 32) .cse0) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse2 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvmul (_ bv4 32) (bvmul .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvmul (_ bv4 32) (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| .cse3) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvmul (_ bv4 32) (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)) (bvneg (bvmul (bvmul .cse0 (_ bv4 32)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|)))))))) (= c_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-11-25 20:01:54,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346041241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:01:54,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629388127] [2021-11-25 20:01:54,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:01:54,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:01:54,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:01:54,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:01:54,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:01:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:01:58,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 20:01:58,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:02:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:02:05,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:02:05,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629388127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:05,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:02:05,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 10 [2021-11-25 20:02:05,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239017420] [2021-11-25 20:02:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:05,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:02:05,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:02:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:02:05,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=133, Unknown=7, NotChecked=196, Total=380 [2021-11-25 20:02:05,576 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 20:02:10,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:17,215 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2021-11-25 20:02:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:02:17,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-11-25 20:02:17,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:17,235 INFO L225 Difference]: With dead ends: 44 [2021-11-25 20:02:17,235 INFO L226 Difference]: Without dead ends: 42 [2021-11-25 20:02:17,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=54, Invalid=177, Unknown=7, NotChecked=224, Total=462 [2021-11-25 20:02:17,238 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:17,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 122 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 148 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-11-25 20:02:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-25 20:02:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-25 20:02:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-25 20:02:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-11-25 20:02:17,254 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 29 [2021-11-25 20:02:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:17,255 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-11-25 20:02:17,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-25 20:02:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-11-25 20:02:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 20:02:17,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:17,258 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:17,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:02:17,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:02:17,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:02:17,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:02:17,861 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:02:17,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash -603494572, now seen corresponding path program 1 times [2021-11-25 20:02:17,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:02:17,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418878759] [2021-11-25 20:02:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:17,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:02:17,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:02:17,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:02:17,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 20:02:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:18,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:02:18,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:02:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:02:18,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:02:18,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:02:18,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418878759] [2021-11-25 20:02:18,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418878759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:18,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:18,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:02:18,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721858339] [2021-11-25 20:02:18,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:18,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:02:18,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:02:18,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:02:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:02:18,677 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:02:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:19,587 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2021-11-25 20:02:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:02:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-11-25 20:02:19,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:19,596 INFO L225 Difference]: With dead ends: 46 [2021-11-25 20:02:19,596 INFO L226 Difference]: Without dead ends: 44 [2021-11-25 20:02:19,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:02:19,598 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:19,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:02:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-25 20:02:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-11-25 20:02:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-25 20:02:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-11-25 20:02:19,613 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 34 [2021-11-25 20:02:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:19,614 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-11-25 20:02:19,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:02:19,615 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-11-25 20:02:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 20:02:19,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:19,617 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:02:19,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-25 20:02:19,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:02:19,830 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:02:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash -127108025, now seen corresponding path program 1 times [2021-11-25 20:02:19,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:02:19,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735342226] [2021-11-25 20:02:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:19,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:02:19,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:02:19,833 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:02:19,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 20:02:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:21,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 20:02:21,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:02:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:02:36,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:03:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:03:04,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:03:04,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735342226] [2021-11-25 20:03:04,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735342226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:03:04,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1616179458] [2021-11-25 20:03:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:04,206 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:03:04,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:03:04,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:03:04,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-25 20:03:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:12,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 20:03:12,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:03:24,755 WARN L227 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:03:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 20:03:29,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:03:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:03:40,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1616179458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:03:40,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512079561] [2021-11-25 20:03:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:40,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:03:40,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:03:40,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:03:40,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:03:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:47,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 20:03:47,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:04:00,787 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:04:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:04:04,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:04:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-25 20:04:14,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512079561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:04:14,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:04:14,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 12, 7, 12, 7] total 16 [2021-11-25 20:04:14,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896239113] [2021-11-25 20:04:14,685 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:04:14,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 20:04:14,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:04:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 20:04:14,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:04:14,688 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-25 20:04:21,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:23,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:27,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:29,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:52,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:55,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:57,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:59,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:01,918 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2021-11-25 20:05:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:05:01,940 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 39 [2021-11-25 20:05:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:01,943 INFO L225 Difference]: With dead ends: 56 [2021-11-25 20:05:01,944 INFO L226 Difference]: Without dead ends: 54 [2021-11-25 20:05:01,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:05:01,945 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 65 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:01,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 115 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 226 Invalid, 5 Unknown, 0 Unchecked, 39.3s Time] [2021-11-25 20:05:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-25 20:05:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-11-25 20:05:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-25 20:05:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2021-11-25 20:05:01,962 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 39 [2021-11-25 20:05:01,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:01,962 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2021-11-25 20:05:01,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-25 20:05:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2021-11-25 20:05:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-25 20:05:01,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:01,965 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:05:01,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:02,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-25 20:05:02,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:05:02,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:05:02,571 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:05:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -114260771, now seen corresponding path program 1 times [2021-11-25 20:05:02,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:05:02,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773235848] [2021-11-25 20:05:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:02,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:05:02,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:05:02,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:05:02,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09f4778f-a9fb-43e2-9a3d-f8f7816a299d/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 20:05:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:03,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 20:05:03,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:05:11,266 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:05:16,892 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:05:22,546 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:05:33,160 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:05:35,653 WARN L838 $PredicateComparison]: unable to prove that (and (bvule |c_ULTIMATE.start_main_~d~0#1| (_ bv10 32)) (bvugt |c_ULTIMATE.start_main_~d~0#1| (_ bv2 32)) (exists ((|ULTIMATE.start_main_~n~0#1| (_ BitVec 32))) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (and (= (bvurem |ULTIMATE.start_main_~n~0#1| .cse0) |c_ULTIMATE.start_main_~k~0#1|) (= (bvadd (bvmul (_ bv4 32) (bvudiv |ULTIMATE.start_main_~n~0#1| .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)))) |c_ULTIMATE.start_main_~q~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| (bvurem |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)) (= |c_ULTIMATE.start_main_~s~0#1| ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~n~0#1|)))) (bvule |ULTIMATE.start_main_~n~0#1| (_ bv10 32)))))) is different from false [2021-11-25 20:05:41,497 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:05:47,152 WARN L227 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:05:52,695 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:03,179 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:08,758 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:14,298 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:19,876 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:30,423 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:36,096 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:41,668 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:47,250 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:06:57,799 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:03,455 WARN L227 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:09,029 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:14,665 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:25,165 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:30,785 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:36,292 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:41,840 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:52,327 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:07:57,958 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:02,964 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:08,472 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:14,012 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:19,638 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:25,224 WARN L227 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:30,249 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:35,886 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:41,397 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:46,939 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:52,546 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:08:58,073 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:08,601 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:14,116 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:19,654 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:25,148 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:30,682 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:33,119 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32))) (exists ((|ULTIMATE.start_main_~n~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~d~0#1| (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (and (= (bvurem |ULTIMATE.start_main_~n~0#1| .cse0) |c_ULTIMATE.start_main_~k~0#1|) (bvuge ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~n~0#1|))) |ULTIMATE.start_main_~d~0#1|) (= (bvadd (bvmul (_ bv4 32) (bvudiv |ULTIMATE.start_main_~n~0#1| .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~d~0#1|)))) |c_ULTIMATE.start_main_~q~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| (bvurem |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~d~0#1|)) (bvule |ULTIMATE.start_main_~d~0#1| (_ bv10 32)) (bvule |ULTIMATE.start_main_~n~0#1| (_ bv10 32)) (bvugt |ULTIMATE.start_main_~d~0#1| (_ bv2 32)))))) is different from false [2021-11-25 20:09:41,042 WARN L227 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:46,065 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:51,561 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:09:57,051 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:02,506 WARN L227 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:12,976 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:20,182 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:25,659 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:30,683 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:39,417 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:46,538 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:10:48,962 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~n~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~d~0#1| (_ BitVec 32))) (let ((.cse0 (bvurem |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~d~0#1|))) (and (not (= (_ bv0 32) .cse0)) (bvuge ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~n~0#1|))) |ULTIMATE.start_main_~d~0#1|) (bvule |ULTIMATE.start_main_~n~0#1| (_ bv10 32)) (let ((.cse1 (bvadd |ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (bvult (bvadd (bvmul .cse0 (_ bv2 32)) (bvmul (bvudiv |ULTIMATE.start_main_~n~0#1| .cse1) (_ bv4 32)) (bvmul (bvneg (bvudiv |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~d~0#1|)) (_ bv4 32))) (bvurem |ULTIMATE.start_main_~n~0#1| .cse1)))))) is different from false [2021-11-25 20:10:51,284 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~n~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~d~0#1| (_ BitVec 32))) (let ((.cse0 (bvurem |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~d~0#1|))) (and (not (= (_ bv0 32) .cse0)) (bvuge ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~n~0#1|))) |ULTIMATE.start_main_~d~0#1|) (bvule |ULTIMATE.start_main_~n~0#1| (_ bv10 32)) (let ((.cse1 (bvadd |ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (bvult (bvadd (bvmul .cse0 (_ bv2 32)) (bvmul (bvudiv |ULTIMATE.start_main_~n~0#1| .cse1) (_ bv4 32)) (bvmul (bvneg (bvudiv |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~d~0#1|)) (_ bv4 32))) (bvurem |ULTIMATE.start_main_~n~0#1| .cse1)))))) is different from true [2021-11-25 20:10:59,183 WARN L227 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:09,521 WARN L227 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:14,993 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:25,451 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:30,914 WARN L227 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:38,840 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:43,852 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:49,342 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:11:54,833 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:05,223 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:10,762 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:18,771 WARN L227 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:23,792 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:29,281 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:34,844 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:45,265 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:50,791 WARN L227 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:12:58,718 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:13:09,243 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 16 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:13:14,726 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 20:13:25,233 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)