./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH --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 bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:52,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:52,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:52,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:52,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:52,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:52,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:52,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:52,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:52,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:52,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:52,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:52,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:52,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:52,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:52,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:52,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:52,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:52,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:52,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:52,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:52,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:52,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:52,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:52,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:52,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:52,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:52,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:52,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:52,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:52,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:52,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:52,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:52,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:52,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:52,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:52,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:52,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:52,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:52,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:52,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:52,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:06:52,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:52,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:52,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:52,901 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:52,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:52,901 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:52,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:06:52,902 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:52,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:52,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:06:52,911 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:06:52,912 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:52,912 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:06:52,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:06:52,913 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:06:52,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:52,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:06:52,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:06:52,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:06:52,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:52,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:06:52,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:52,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:06:52,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:52,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:06:52,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:06:52,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:52,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:06:52,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:52,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:52,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:52,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:52,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:52,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:06:52,922 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:06:52,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:06:52,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:06:52,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:52,924 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:52,925 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_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 [2021-11-03 04:06:53,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:53,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:53,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:53,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:53,257 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:53,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-03 04:06:53,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/71015548d/5e155c8e52904984a49b5c8c041c017d/FLAG83b8a45f5 [2021-11-03 04:06:53,900 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:53,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-03 04:06:53,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/71015548d/5e155c8e52904984a49b5c8c041c017d/FLAG83b8a45f5 [2021-11-03 04:06:54,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/71015548d/5e155c8e52904984a49b5c8c041c017d [2021-11-03 04:06:54,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:54,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:54,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:54,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:54,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:54,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:54" (1/1) ... [2021-11-03 04:06:54,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbc5621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:54, skipping insertion in model container [2021-11-03 04:06:54,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:54" (1/1) ... [2021-11-03 04:06:54,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:54,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:54,434 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2021-11-03 04:06:54,452 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:1699) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1381) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:06:54,468 INFO L168 Benchmark]: Toolchain (without parser) took 239.87 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 82.9 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:54,470 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 49.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:06:54,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.02 ms. Allocated memory is still 104.9 MB. Free memory was 70.6 MB in the beginning and 82.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:06:54,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 49.9 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 235.02 ms. Allocated memory is still 104.9 MB. Free memory was 70.6 MB in the beginning and 82.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: 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_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH --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 bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:57,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:57,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:57,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:57,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:57,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:57,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:57,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:57,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:57,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:57,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:57,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:57,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:57,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:57,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:57,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:57,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:57,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:57,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:57,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:57,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:57,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:57,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:57,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:57,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:57,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:57,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:57,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:57,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:57,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:57,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:57,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:57,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:57,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:57,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:57,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:57,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:57,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:57,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:57,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:57,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:57,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:06:57,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:57,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:57,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:57,327 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:57,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:57,327 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:57,328 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:57,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:57,328 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:57,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:57,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:06:57,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:06:57,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:57,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:06:57,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:57,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:06:57,333 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:57,333 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:06:57,333 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:06:57,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:06:57,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:06:57,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:57,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:06:57,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:57,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:06:57,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:57,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:57,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:57,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:57,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:06:57,336 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:06:57,337 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:06:57,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:06:57,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:57,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:57,338 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_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb5ad63279572b10ccf828ab50fb4850c30a9bc769c3e514e6f9dd22eeb86526 [2021-11-03 04:06:57,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:57,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:57,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:57,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:57,829 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:57,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-03 04:06:57,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/9432aeede/65484711cdea4ddda95cd4dbf4cffa26/FLAG9a4775b73 [2021-11-03 04:06:58,601 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:06:58,602 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i [2021-11-03 04:06:58,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/9432aeede/65484711cdea4ddda95cd4dbf4cffa26/FLAG9a4775b73 [2021-11-03 04:06:58,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/data/9432aeede/65484711cdea4ddda95cd4dbf4cffa26 [2021-11-03 04:06:58,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:06:58,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:06:58,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:58,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:06:58,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:06:58,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:58" (1/1) ... [2021-11-03 04:06:58,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef23978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:58, skipping insertion in model container [2021-11-03 04:06:58,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:58" (1/1) ... [2021-11-03 04:06:58,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:06:59,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:06:59,208 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2021-11-03 04:06:59,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:59,307 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:06:59,323 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound50.i[948,961] [2021-11-03 04:06:59,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:06:59,362 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:06:59,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59 WrapperNode [2021-11-03 04:06:59,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:06:59,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:59,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:06:59,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:06:59,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:06:59,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:06:59,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:06:59,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:06:59,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:06:59,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:06:59,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:06:59,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:06:59,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (1/1) ... [2021-11-03 04:06:59,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:06:59,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:06:59,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:06:59,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:06:59,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:06:59,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:06:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:07:02,984 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:07:02,984 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-11-03 04:07:02,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:02 BoogieIcfgContainer [2021-11-03 04:07:02,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:07:02,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:07:02,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:07:02,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:07:02,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:58" (1/3) ... [2021-11-03 04:07:02,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12109286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:02, skipping insertion in model container [2021-11-03 04:07:02,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:59" (2/3) ... [2021-11-03 04:07:02,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12109286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:02, skipping insertion in model container [2021-11-03 04:07:02,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:02" (3/3) ... [2021-11-03 04:07:02,998 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound50.i [2021-11-03 04:07:03,005 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:07:03,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 04:07:03,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:07:03,073 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 [2021-11-03 04:07:03,073 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 04:07:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:07:03,098 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:03,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:03,100 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:07:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-11-03 04:07:03,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:03,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710780707] [2021-11-03 04:07:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:03,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:03,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:03,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:07:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:03,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:07:03,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:03,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:04,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:04,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710780707] [2021-11-03 04:07:04,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710780707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:04,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:04,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:07:04,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109717168] [2021-11-03 04:07:04,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:07:04,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:07:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:07:04,083 INFO L87 Difference]: Start difference. First operand has 34 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:04,108 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2021-11-03 04:07:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:07:04,110 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:07:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:04,141 INFO L225 Difference]: With dead ends: 65 [2021-11-03 04:07:04,142 INFO L226 Difference]: Without dead ends: 30 [2021-11-03 04:07:04,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:07:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-03 04:07:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-03 04:07:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-03 04:07:04,191 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-11-03 04:07:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:04,192 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-03 04:07:04,192 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:07:04,192 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-03 04:07:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:07:04,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:04,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:04,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:04,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:04,401 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:07:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-11-03 04:07:04,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:04,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174622871] [2021-11-03 04:07:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:04,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:04,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:04,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:04,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:07:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 04:07:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:09:13,953 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~n~0 (_ BitVec 32)) (ULTIMATE.start_main_~d~0 (_ BitVec 32))) (and (not (= (bvmul (_ bv8 32) ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (let ((.cse1 (bvurem ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)) (.cse0 (bvudiv ULTIMATE.start_main_~n~0 .cse3)) (.cse2 (bvneg (bvudiv ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)))) (bvadd (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0 .cse0)) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse2 ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0)) (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 (bvurem ULTIMATE.start_main_~n~0 .cse3))) (bvneg (bvmul (bvmul .cse1 (_ bv4 32)) ULTIMATE.start_main_~d~0)) (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse2 (_ bv8 32))) ULTIMATE.start_main_~d~0))))))) (bvule ULTIMATE.start_main_~n~0 (_ bv50 32)) (bvule ULTIMATE.start_main_~d~0 (_ bv50 32)))) is different from false [2021-11-03 04:09:15,975 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~n~0 (_ BitVec 32)) (ULTIMATE.start_main_~d~0 (_ BitVec 32))) (and (not (= (bvmul (_ bv8 32) ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (let ((.cse1 (bvurem ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)) (.cse0 (bvudiv ULTIMATE.start_main_~n~0 .cse3)) (.cse2 (bvneg (bvudiv ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~d~0)))) (bvadd (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0 .cse0)) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse2 ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~d~0)) (bvmul (_ bv4 32) (bvmul ULTIMATE.start_main_~d~0 (bvurem ULTIMATE.start_main_~n~0 .cse3))) (bvneg (bvmul (bvmul .cse1 (_ bv4 32)) ULTIMATE.start_main_~d~0)) (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse2 (_ bv8 32))) ULTIMATE.start_main_~d~0))))))) (bvule ULTIMATE.start_main_~n~0 (_ bv50 32)) (bvule ULTIMATE.start_main_~d~0 (_ bv50 32)))) is different from true [2021-11-03 04:09:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:09:15,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:09:27,402 WARN L860 $PredicateComparison]: unable to prove that (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0)))))) is different from true [2021-11-03 04:09:36,329 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0))))))) is different from true [2021-11-03 04:09:45,111 WARN L860 $PredicateComparison]: unable to prove that (or (not (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32))) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0))))))) is different from true [2021-11-03 04:10:10,919 WARN L860 $PredicateComparison]: unable to prove that (or (not (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~a~0 (_ bv4294967294 32)))) (let ((.cse1 (bvudiv c_ULTIMATE.start_main_~n~0 .cse3)) (.cse0 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (.cse2 (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~a~0))) (bvadd (bvmul (_ bv4 32) (bvmul .cse0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvmul .cse2 (_ bv4 32)) c_ULTIMATE.start_main_~a~0)) (bvneg (bvmul (bvadd (bvmul .cse1 (_ bv8 32)) (bvmul .cse0 (_ bv8 32))) c_ULTIMATE.start_main_~a~0)) (bvmul (_ bv8 32) .cse2) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse3) c_ULTIMATE.start_main_~a~0))))))) is different from true [2021-11-03 04:10:26,578 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (not (bvugt v_ULTIMATE.start_main_~a~0_10 (_ bv2 32))) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse1 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvurem c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10)) (.cse2 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvudiv c_ULTIMATE.start_main_~n~0 .cse1))) (bvadd (bvneg (bvmul (bvmul .cse0 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse1) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse2 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse3 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse3 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10)))))))) is different from true [2021-11-03 04:10:39,263 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (forall ((v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (not (bvugt v_ULTIMATE.start_main_~a~0_10 (_ bv2 32))) (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (let ((.cse1 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvurem c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10)) (.cse2 (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvudiv c_ULTIMATE.start_main_~n~0 .cse1))) (bvadd (bvneg (bvmul (bvmul .cse0 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv8 32) .cse0) (bvmul (_ bv4 32) (bvmul (bvurem c_ULTIMATE.start_main_~n~0 .cse1) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse2 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse3 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse3 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10))))))))) is different from true [2021-11-03 04:11:15,779 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0_10 (_ BitVec 32)) (v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (= (bvmul (_ bv8 32) v_ULTIMATE.start_main_~n~0_10) (let ((.cse2 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvudiv v_ULTIMATE.start_main_~n~0_10 .cse2)) (.cse1 (bvneg (bvudiv v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvurem v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse0 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 (bvurem v_ULTIMATE.start_main_~n~0_10 .cse2))) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10 .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)))))) (not (bvule v_ULTIMATE.start_main_~n~0_10 (_ bv50 32))))) is different from false [2021-11-03 04:11:17,805 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~n~0_10 (_ BitVec 32)) (v_ULTIMATE.start_main_~a~0_10 (_ BitVec 32))) (or (not (bvule v_ULTIMATE.start_main_~a~0_10 (_ bv50 32))) (= (bvmul (_ bv8 32) v_ULTIMATE.start_main_~n~0_10) (let ((.cse2 (bvadd v_ULTIMATE.start_main_~a~0_10 (_ bv4294967294 32)))) (let ((.cse0 (bvudiv v_ULTIMATE.start_main_~n~0_10 .cse2)) (.cse1 (bvneg (bvudiv v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (.cse3 (bvurem v_ULTIMATE.start_main_~n~0_10 v_ULTIMATE.start_main_~a~0_10))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul .cse0 v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10)) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 (bvurem v_ULTIMATE.start_main_~n~0_10 .cse2))) (bvmul (_ bv4 32) (bvmul v_ULTIMATE.start_main_~a~0_10 v_ULTIMATE.start_main_~a~0_10 .cse1)) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) v_ULTIMATE.start_main_~a~0_10)))))) (not (bvule v_ULTIMATE.start_main_~n~0_10 (_ bv50 32))))) is different from true [2021-11-03 04:11:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:11:17,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:11:17,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174622871] [2021-11-03 04:11:17,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174622871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:11:17,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:11:17,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 20 [2021-11-03 04:11:17,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634777498] [2021-11-03 04:11:17,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 04:11:17,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:11:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 04:11:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=105, Unknown=15, NotChecked=216, Total=380 [2021-11-03 04:11:17,811 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:11:35,368 WARN L207 SmtUtils]: Spent 12.98 s on a formula simplification that was a NOOP. DAG size: 49 [2021-11-03 04:11:59,293 WARN L207 SmtUtils]: Spent 13.71 s on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-11-03 04:12:27,634 WARN L207 SmtUtils]: Spent 22.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-11-03 04:12:46,277 WARN L207 SmtUtils]: Spent 10.46 s on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-11-03 04:13:08,942 WARN L207 SmtUtils]: Spent 13.73 s on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-11-03 04:13:24,914 WARN L207 SmtUtils]: Spent 9.23 s on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-11-03 04:13:37,667 WARN L207 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 39 [2021-11-03 04:13:50,097 WARN L207 SmtUtils]: Spent 10.45 s on a formula simplification that was a NOOP. DAG size: 68 [2021-11-03 04:14:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:44,711 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2021-11-03 04:14:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:14:44,738 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:14:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:44,740 INFO L225 Difference]: With dead ends: 50 [2021-11-03 04:14:44,740 INFO L226 Difference]: Without dead ends: 48 [2021-11-03 04:14:44,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 184.4s TimeCoverageRelationStatistics Valid=106, Invalid=364, Unknown=24, NotChecked=376, Total=870 [2021-11-03 04:14:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-03 04:14:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-11-03 04:14:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-11-03 04:14:44,748 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 13 [2021-11-03 04:14:44,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:44,748 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-11-03 04:14:44,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:44,748 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-11-03 04:14:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:14:44,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:44,749 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:44,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:44,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:44,953 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:14:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-11-03 04:14:44,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:44,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338684740] [2021-11-03 04:14:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:44,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:44,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:44,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:44,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:14:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:45,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:14:45,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:45,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:46,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:46,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338684740] [2021-11-03 04:14:46,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338684740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:46,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:46,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:14:46,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413005413] [2021-11-03 04:14:46,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:14:46,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:46,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:14:46,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:14:46,070 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:47,624 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2021-11-03 04:14:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:14:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:14:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:47,626 INFO L225 Difference]: With dead ends: 48 [2021-11-03 04:14:47,626 INFO L226 Difference]: Without dead ends: 46 [2021-11-03 04:14:47,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:14:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-03 04:14:47,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2021-11-03 04:14:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-11-03 04:14:47,636 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 15 [2021-11-03 04:14:47,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:47,636 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-11-03 04:14:47,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-11-03 04:14:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-03 04:14:47,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:47,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:47,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:47,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:47,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:14:47,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:47,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-11-03 04:14:47,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:47,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220637765] [2021-11-03 04:14:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:47,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:47,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:47,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:47,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:15:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:10,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 04:15:10,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:44,445 WARN L207 SmtUtils]: Spent 13.66 s on a formula simplification that was a NOOP. DAG size: 52 [2021-11-03 04:16:05,873 WARN L207 SmtUtils]: Spent 6.85 s on a formula simplification that was a NOOP. DAG size: 44 [2021-11-03 04:16:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:44,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:17:22,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:22,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220637765] [2021-11-03 04:17:22,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220637765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:22,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:22,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 6] imperfect sequences [] total 16 [2021-11-03 04:17:22,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508883419] [2021-11-03 04:17:22,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 04:17:22,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:22,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 04:17:22,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=178, Unknown=13, NotChecked=0, Total=240 [2021-11-03 04:17:22,808 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:50,447 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2021-11-03 04:18:28,927 WARN L207 SmtUtils]: Spent 22.24 s on a formula simplification that was a NOOP. DAG size: 70 [2021-11-03 04:19:01,073 WARN L207 SmtUtils]: Spent 27.93 s on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-11-03 04:19:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:33,529 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-11-03 04:19:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 04:19:33,567 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-03 04:19:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:33,568 INFO L225 Difference]: With dead ends: 39 [2021-11-03 04:19:33,568 INFO L226 Difference]: Without dead ends: 37 [2021-11-03 04:19:33,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 166.6s TimeCoverageRelationStatistics Valid=118, Invalid=411, Unknown=23, NotChecked=0, Total=552 [2021-11-03 04:19:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-03 04:19:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-11-03 04:19:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.21875) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-03 04:19:33,577 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 17 [2021-11-03 04:19:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:33,578 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-03 04:19:33,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-03 04:19:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 04:19:33,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:33,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:33,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:33,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:33,780 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:19:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:33,780 INFO L85 PathProgramCache]: Analyzing trace with hash 720171431, now seen corresponding path program 1 times [2021-11-03 04:19:33,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:33,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714171563] [2021-11-03 04:19:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:33,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:33,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:33,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:19:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:35,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:19:35,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:19:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:37,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:19:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:19:42,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:19:42,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714171563] [2021-11-03 04:19:42,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714171563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:19:42,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:19:42,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-11-03 04:19:42,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404408329] [2021-11-03 04:19:42,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:19:42,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:19:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:19:42,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:19:42,046 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:19:51,133 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-11-03 04:19:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:19:51,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-03 04:19:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:19:51,152 INFO L225 Difference]: With dead ends: 45 [2021-11-03 04:19:51,153 INFO L226 Difference]: Without dead ends: 43 [2021-11-03 04:19:51,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:19:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-03 04:19:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-11-03 04:19:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-11-03 04:19:51,166 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 19 [2021-11-03 04:19:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:19:51,167 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-11-03 04:19:51,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:19:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-11-03 04:19:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 04:19:51,169 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:19:51,169 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:19:51,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:19:51,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:19:51,373 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:19:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:19:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash 729574747, now seen corresponding path program 1 times [2021-11-03 04:19:51,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:19:51,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633027827] [2021-11-03 04:19:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:19:51,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:19:51,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:19:51,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:19:51,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6589bc-a383-433f-8d31-7421a86c539b/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:19:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:19:53,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 04:19:53,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:20:03,222 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:20:09,020 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-03 04:20:14,862 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:20:20,827 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:20:26,650 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:20:32,384 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 04:20:38,151 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-03 04:20:44,130 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:20:49,410 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-03 04:20:52,022 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd c_ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv c_ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0))))) (bvule c_ULTIMATE.start_main_~a~0 (_ bv50 32)) (= c_ULTIMATE.start_main_~t~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~d~0) (= (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem c_ULTIMATE.start_main_~n~0 .cse0)) (bvule c_ULTIMATE.start_main_~n~0 (_ bv50 32)) (= ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~n~0))) c_ULTIMATE.start_main_~s~0))) is different from false [2021-11-03 04:20:54,580 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd c_ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv c_ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0))))) (bvule c_ULTIMATE.start_main_~a~0 (_ bv50 32)) (= c_ULTIMATE.start_main_~t~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~d~0) (= (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem c_ULTIMATE.start_main_~n~0 .cse0)) (bvule c_ULTIMATE.start_main_~n~0 (_ bv50 32)) (= ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~n~0))) c_ULTIMATE.start_main_~s~0))) is different from true [2021-11-03 04:21:00,578 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:21:06,498 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 13 [2021-11-03 04:21:12,344 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:21:18,156 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:21:23,960 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-03 04:21:29,853 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-03 04:21:35,838 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:21:41,729 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:21:47,552 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:21:53,373 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-03 04:21:59,228 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-03 04:22:05,071 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-03 04:22:10,261 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-03 04:22:12,820 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd c_ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv c_ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0))))) (bvule c_ULTIMATE.start_main_~a~0 (_ bv50 32)) (let ((.cse1 (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (bvadd (bvmul (_ bv8 32) c_ULTIMATE.start_main_~r~0) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~d~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~q~0 (_ bv2 32)) c_ULTIMATE.start_main_~d~0)) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~d~0)) (bvmul c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~q~0))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse1)) (and .cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (= c_ULTIMATE.start_main_~t~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~d~0) (= (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem c_ULTIMATE.start_main_~n~0 .cse0)) (bvule c_ULTIMATE.start_main_~n~0 (_ bv50 32)) (= ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~n~0))) c_ULTIMATE.start_main_~s~0))) is different from false [2021-11-03 04:22:15,380 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd c_ULTIMATE.start_main_~d~0 (_ bv4294967294 32)))) (and (bvugt c_ULTIMATE.start_main_~a~0 (_ bv2 32)) (= c_ULTIMATE.start_main_~q~0 (bvadd (bvmul (_ bv4 32) (bvudiv c_ULTIMATE.start_main_~n~0 .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0))))) (bvule c_ULTIMATE.start_main_~a~0 (_ bv50 32)) (let ((.cse1 (= (bvmul (_ bv8 32) c_ULTIMATE.start_main_~n~0) (bvadd (bvmul (_ bv8 32) c_ULTIMATE.start_main_~r~0) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~d~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~q~0 (_ bv2 32)) c_ULTIMATE.start_main_~d~0)) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~d~0)) (bvmul c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~d~0 c_ULTIMATE.start_main_~q~0))))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse1)) (and .cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))))) (= c_ULTIMATE.start_main_~t~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~d~0) (= (bvurem c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~k~0 (bvurem c_ULTIMATE.start_main_~n~0 .cse0)) (bvule c_ULTIMATE.start_main_~n~0 (_ bv50 32)) (= ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven c_ULTIMATE.start_main_~n~0))) c_ULTIMATE.start_main_~s~0))) is different from true