./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P --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 b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:54:15,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:54:15,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:54:15,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:54:15,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:54:15,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:54:15,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:54:15,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:54:15,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:54:15,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:54:16,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:54:16,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:54:16,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:54:16,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:54:16,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:54:16,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:54:16,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:54:16,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:54:16,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:54:16,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:54:16,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:54:16,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:54:16,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:54:16,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:54:16,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:54:16,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:54:16,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:54:16,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:54:16,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:54:16,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:54:16,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:54:16,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:54:16,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:54:16,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:54:16,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:54:16,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:54:16,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:54:16,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:54:16,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:54:16,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:54:16,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:54:16,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:54:16,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:54:16,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:54:16,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:54:16,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:54:16,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:54:16,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:54:16,098 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:54:16,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:54:16,099 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:54:16,099 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:54:16,100 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:54:16,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:54:16,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:54:16,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:54:16,101 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:54:16,101 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:54:16,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:54:16,102 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:54:16,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:54:16,104 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:54:16,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:54:16,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:54:16,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:54:16,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:54:16,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:54:16,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:54:16,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:54:16,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:54:16,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:54:16,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:54:16,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:54:16,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:54:16,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:16,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:54:16,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:54:16,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:54:16,109 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:54:16,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:54:16,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:54:16,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:54:16,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:54:16,110 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_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2021-11-20 23:54:16,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:54:16,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:54:16,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:54:16,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:54:16,433 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:54:16,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-20 23:54:16,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/0bcaea681/6447490b6f414832b2f45b19210f7712/FLAGe6d5185a5 [2021-11-20 23:54:17,099 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:54:17,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-20 23:54:17,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/0bcaea681/6447490b6f414832b2f45b19210f7712/FLAGe6d5185a5 [2021-11-20 23:54:17,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/0bcaea681/6447490b6f414832b2f45b19210f7712 [2021-11-20 23:54:17,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:54:17,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:54:17,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:17,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:54:17,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:54:17,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:17" (1/1) ... [2021-11-20 23:54:17,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c42662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:17, skipping insertion in model container [2021-11-20 23:54:17,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:17" (1/1) ... [2021-11-20 23:54:17,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:54:17,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:54:18,095 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1434) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1107) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2392) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2392) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2392) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1602) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1069) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1456) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:595) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-20 23:54:18,105 INFO L158 Benchmark]: Toolchain (without parser) took 744.23ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 66.3MB in the beginning and 103.2MB in the end (delta: -36.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:54:18,106 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:54:18,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.64ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 66.1MB in the beginning and 103.2MB in the end (delta: -37.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:54:18,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 41.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.64ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 66.1MB in the beginning and 103.2MB in the end (delta: -37.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P --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 b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:54:20,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:54:20,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:54:20,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:54:20,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:54:20,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:54:20,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:54:20,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:54:20,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:54:20,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:54:20,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:54:20,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:54:20,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:54:20,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:54:20,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:54:20,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:54:20,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:54:20,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:54:20,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:54:20,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:54:20,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:54:20,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:54:20,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:54:20,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:54:20,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:54:20,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:54:20,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:54:20,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:54:20,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:54:20,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:54:20,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:54:20,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:54:20,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:54:20,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:54:20,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:54:20,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:54:20,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:54:20,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:54:20,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:54:20,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:54:20,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:54:20,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:54:20,531 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:54:20,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:54:20,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:54:20,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:54:20,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:54:20,533 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:54:20,533 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:54:20,534 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:54:20,534 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:54:20,534 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:54:20,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:54:20,535 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:54:20,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:54:20,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:54:20,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:54:20,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:54:20,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:54:20,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:54:20,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:54:20,539 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:54:20,539 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:54:20,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:54:20,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:54:20,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:54:20,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:54:20,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:54:20,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:54:20,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:54:20,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:20,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:54:20,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:54:20,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:54:20,542 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:54:20,542 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:54:20,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:54:20,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:54:20,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:54:20,543 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_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d24e4c1c847e769127c38fbc1869029d0f9f97538d9231a2c03e206a85bd0f [2021-11-20 23:54:20,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:54:20,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:54:20,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:54:20,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:54:20,941 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:54:20,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-20 23:54:21,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/876f5190c/cd9be583f3ae41c9bdaf3e740d2b2667/FLAG881c90a99 [2021-11-20 23:54:21,738 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:54:21,738 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i [2021-11-20 23:54:21,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/876f5190c/cd9be583f3ae41c9bdaf3e740d2b2667/FLAG881c90a99 [2021-11-20 23:54:21,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/data/876f5190c/cd9be583f3ae41c9bdaf3e740d2b2667 [2021-11-20 23:54:21,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:54:21,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:54:21,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:21,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:54:21,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:54:21,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:21" (1/1) ... [2021-11-20 23:54:21,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56359d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:21, skipping insertion in model container [2021-11-20 23:54:21,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:21" (1/1) ... [2021-11-20 23:54:21,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:54:21,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:54:22,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2021-11-20 23:54:22,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2021-11-20 23:54:22,424 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2021-11-20 23:54:22,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2021-11-20 23:54:22,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2021-11-20 23:54:22,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2021-11-20 23:54:22,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2021-11-20 23:54:22,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2021-11-20 23:54:22,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2021-11-20 23:54:22,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2021-11-20 23:54:22,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2021-11-20 23:54:22,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2021-11-20 23:54:22,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2021-11-20 23:54:22,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:22,447 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:54:22,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[40548,40561] [2021-11-20 23:54:22,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[40793,40806] [2021-11-20 23:54:22,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41044,41057] [2021-11-20 23:54:22,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41293,41306] [2021-11-20 23:54:22,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41371,41384] [2021-11-20 23:54:22,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41469,41482] [2021-11-20 23:54:22,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41539,41552] [2021-11-20 23:54:22,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41607,41620] [2021-11-20 23:54:22,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41705,41718] [2021-11-20 23:54:22,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41799,41812] [2021-11-20 23:54:22,486 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41906,41919] [2021-11-20 23:54:22,486 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[41974,41987] [2021-11-20 23:54:22,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/sv-benchmarks/c/floats-cbmc-regression/float21.i[42220,42233] [2021-11-20 23:54:22,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:22,651 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:54:22,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22 WrapperNode [2021-11-20 23:54:22,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:22,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:22,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:54:22,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:54:22,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,709 INFO L137 Inliner]: procedures = 449, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2021-11-20 23:54:22,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:22,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:54:22,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:54:22,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:54:22,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:54:22,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:54:22,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:54:22,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:54:22,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (1/1) ... [2021-11-20 23:54:22,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:22,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:54:22,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:54:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:54:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:54:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:54:22,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:54:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:54:22,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:54:22,922 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:54:22,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:54:31,277 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:54:31,284 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:54:31,284 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:54:31,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:31 BoogieIcfgContainer [2021-11-20 23:54:31,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:54:31,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:54:31,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:54:31,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:54:31,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:21" (1/3) ... [2021-11-20 23:54:31,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f39716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:31, skipping insertion in model container [2021-11-20 23:54:31,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:22" (2/3) ... [2021-11-20 23:54:31,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f39716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:31, skipping insertion in model container [2021-11-20 23:54:31,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:31" (3/3) ... [2021-11-20 23:54:31,293 INFO L111 eAbstractionObserver]: Analyzing ICFG float21.i [2021-11-20 23:54:31,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:54:31,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-20 23:54:31,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:54:31,370 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 [2021-11-20 23:54:31,370 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-20 23:54:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:54:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-20 23:54:31,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:31,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-20 23:54:31,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:54:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-20 23:54:31,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:31,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784016541] [2021-11-20 23:54:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:31,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:31,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:31,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:54:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:31,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:54:31,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:31,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:54:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:31,696 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:54:31,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784016541] [2021-11-20 23:54:31,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784016541] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:31,697 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:31,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:54:31,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393020422] [2021-11-20 23:54:31,701 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:31,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:54:31,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:54:31,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:54:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:54:31,738 INFO L87 Difference]: Start difference. First operand has 55 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:35,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:54:37,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:54:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:37,387 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2021-11-20 23:54:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:54:37,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-20 23:54:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:37,417 INFO L225 Difference]: With dead ends: 105 [2021-11-20 23:54:37,417 INFO L226 Difference]: Without dead ends: 49 [2021-11-20 23:54:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:54:37,423 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:37,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 1 Unchecked, 5.6s Time] [2021-11-20 23:54:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-20 23:54:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-20 23:54:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 44 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:54:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-11-20 23:54:37,462 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 4 [2021-11-20 23:54:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:37,462 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-11-20 23:54:37,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-11-20 23:54:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:54:37,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:37,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:37,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:37,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:54:37,671 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:54:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1079818240, now seen corresponding path program 1 times [2021-11-20 23:54:37,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:37,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216081463] [2021-11-20 23:54:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:37,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:37,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:37,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:37,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:54:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:37,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:54:37,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:38,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:54:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:41,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:54:41,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216081463] [2021-11-20 23:54:41,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216081463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:41,207 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:41,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 23:54:41,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732138408] [2021-11-20 23:54:41,207 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:41,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:54:41,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:54:41,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:54:41,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:54:41,210 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:54:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:42,416 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-11-20 23:54:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:54:42,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-11-20 23:54:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:42,427 INFO L225 Difference]: With dead ends: 49 [2021-11-20 23:54:42,427 INFO L226 Difference]: Without dead ends: 47 [2021-11-20 23:54:42,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:54:42,429 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:42,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 20 Unchecked, 1.2s Time] [2021-11-20 23:54:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-20 23:54:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-20 23:54:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.3125) internal successors, (42), 42 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:54:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-11-20 23:54:42,436 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 11 [2021-11-20 23:54:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:42,438 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-11-20 23:54:42,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:54:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-11-20 23:54:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 23:54:42,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:42,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:42,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:42,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:54:42,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:54:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash -885368843, now seen corresponding path program 1 times [2021-11-20 23:54:42,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:42,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131793122] [2021-11-20 23:54:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:42,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:42,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:42,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:42,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:54:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:42,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:54:42,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:42,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:54:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:42,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:54:42,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131793122] [2021-11-20 23:54:42,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131793122] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:42,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:42,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:54:42,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901835318] [2021-11-20 23:54:42,876 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:42,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:54:42,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:54:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:54:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:54:42,878 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:54:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:42,883 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-11-20 23:54:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:54:42,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 23:54:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:42,884 INFO L225 Difference]: With dead ends: 47 [2021-11-20 23:54:42,884 INFO L226 Difference]: Without dead ends: 45 [2021-11-20 23:54:42,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:54:42,886 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:42,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2021-11-20 23:54:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-20 23:54:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-20 23:54:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 40 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:54:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-11-20 23:54:42,905 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 12 [2021-11-20 23:54:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:42,905 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-11-20 23:54:42,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 23:54:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-11-20 23:54:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 23:54:42,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:42,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:42,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:43,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:54:43,127 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:54:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1435316947, now seen corresponding path program 1 times [2021-11-20 23:54:43,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:54:43,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453824042] [2021-11-20 23:54:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:43,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:54:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:54:43,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:54:43,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:54:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:43,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:54:43,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:54:43,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:55:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 23:55:43,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:55:43,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453824042] [2021-11-20 23:55:43,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453824042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:55:43,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:55:43,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-20 23:55:43,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646905929] [2021-11-20 23:55:43,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:55:43,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 23:55:43,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:55:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 23:55:43,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:55:43,801 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:55:49,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:55:51,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:55:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:55:53,320 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-11-20 23:55:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:55:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-11-20 23:55:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:55:53,335 INFO L225 Difference]: With dead ends: 45 [2021-11-20 23:55:53,335 INFO L226 Difference]: Without dead ends: 41 [2021-11-20 23:55:53,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:55:53,337 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:55:53,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 47 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 5 Unchecked, 9.2s Time] [2021-11-20 23:55:53,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-20 23:55:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-20 23:55:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 36 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:55:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-11-20 23:55:53,345 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 19 [2021-11-20 23:55:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:55:53,346 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-11-20 23:55:53,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:55:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-11-20 23:55:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:55:53,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:55:53,347 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:55:53,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:55:53,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:55:53,548 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:55:53,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:55:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1545156500, now seen corresponding path program 1 times [2021-11-20 23:55:53,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:55:53,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535336191] [2021-11-20 23:55:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:53,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:55:53,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:55:53,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:55:53,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:55:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:53,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:55:53,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:55:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:55:53,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:55:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:55:53,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:55:53,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535336191] [2021-11-20 23:55:53,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535336191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:55:53,864 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:55:53,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:55:53,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192918062] [2021-11-20 23:55:53,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:55:53,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:55:53,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:55:53,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:55:53,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:55:53,866 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:55:56,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:00,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:02,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:56:02,252 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-11-20 23:56:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:56:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2021-11-20 23:56:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:56:02,260 INFO L225 Difference]: With dead ends: 41 [2021-11-20 23:56:02,260 INFO L226 Difference]: Without dead ends: 39 [2021-11-20 23:56:02,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:56:02,261 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:56:02,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 2 Unknown, 5 Unchecked, 8.4s Time] [2021-11-20 23:56:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-20 23:56:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-20 23:56:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 34 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:56:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-11-20 23:56:02,267 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 20 [2021-11-20 23:56:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:56:02,267 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-11-20 23:56:02,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:56:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-11-20 23:56:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:56:02,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:56:02,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:56:02,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:56:02,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:56:02,469 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:56:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:56:02,471 INFO L85 PathProgramCache]: Analyzing trace with hash 655215355, now seen corresponding path program 1 times [2021-11-20 23:56:02,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:56:02,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152371131] [2021-11-20 23:56:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:02,471 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:56:02,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:56:02,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:56:02,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:56:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:02,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:56:02,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:56:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:56:02,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:56:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:56:09,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:56:09,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152371131] [2021-11-20 23:56:09,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152371131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:56:09,017 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:56:09,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:56:09,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849958353] [2021-11-20 23:56:09,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:56:09,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:56:09,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:56:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:56:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:56:09,019 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:56:14,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:15,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:56:15,537 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-11-20 23:56:15,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:56:15,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 21 [2021-11-20 23:56:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:56:15,549 INFO L225 Difference]: With dead ends: 39 [2021-11-20 23:56:15,549 INFO L226 Difference]: Without dead ends: 35 [2021-11-20 23:56:15,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:56:15,551 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:56:15,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 25 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-20 23:56:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-20 23:56:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-20 23:56:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 30 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:56:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-20 23:56:15,556 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 21 [2021-11-20 23:56:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:56:15,556 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-20 23:56:15,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:56:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-20 23:56:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 23:56:15,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:56:15,557 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:56:15,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 23:56:15,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:56:15,758 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:56:15,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:56:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1163156356, now seen corresponding path program 1 times [2021-11-20 23:56:15,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:56:15,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897916915] [2021-11-20 23:56:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:15,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:56:15,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:56:15,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:56:15,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:56:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:15,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:56:15,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:56:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:56:15,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:56:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:56:18,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:56:18,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897916915] [2021-11-20 23:56:18,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897916915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:56:18,162 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:56:18,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:56:18,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187466251] [2021-11-20 23:56:18,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:56:18,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:56:18,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:56:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:56:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:56:18,164 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:56:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:56:22,617 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-11-20 23:56:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:56:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-11-20 23:56:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:56:22,629 INFO L225 Difference]: With dead ends: 35 [2021-11-20 23:56:22,629 INFO L226 Difference]: Without dead ends: 33 [2021-11-20 23:56:22,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:56:22,630 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:56:22,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 23:56:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-20 23:56:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-20 23:56:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 28 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:56:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-11-20 23:56:22,635 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2021-11-20 23:56:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:56:22,635 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-11-20 23:56:22,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:56:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-11-20 23:56:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 23:56:22,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:56:22,636 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:56:22,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:56:22,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:56:22,838 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:56:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:56:22,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1698104541, now seen corresponding path program 1 times [2021-11-20 23:56:22,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:56:22,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535097330] [2021-11-20 23:56:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:22,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:56:22,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:56:22,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:56:22,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:56:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:22,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:56:22,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:56:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:56:23,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:56:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:56:25,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:56:25,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535097330] [2021-11-20 23:56:25,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535097330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:56:25,531 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:56:25,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:56:25,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442665893] [2021-11-20 23:56:25,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:56:25,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:56:25,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:56:25,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:56:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:56:25,532 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:56:28,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:56:29,387 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-20 23:56:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:56:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2021-11-20 23:56:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:56:29,399 INFO L225 Difference]: With dead ends: 33 [2021-11-20 23:56:29,399 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 23:56:29,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:56:29,400 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:56:29,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 23:56:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 23:56:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 23:56:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:56:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-11-20 23:56:29,405 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2021-11-20 23:56:29,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:56:29,405 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-11-20 23:56:29,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:56:29,406 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-11-20 23:56:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 23:56:29,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:56:29,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:56:29,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:56:29,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:56:29,611 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:56:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:56:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2103462324, now seen corresponding path program 1 times [2021-11-20 23:56:29,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:56:29,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954321864] [2021-11-20 23:56:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:29,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:56:29,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:56:29,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:56:29,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 23:56:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:29,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:56:29,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:56:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:56:30,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:56:36,020 WARN L838 $PredicateComparison]: unable to prove that (fp.leq (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~smallestNormalFloat~0#1|) |c_ULTIMATE.start_main_~v~0#1|) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~v~0#1| ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~largestSubnormalFloat~0#1|))) is different from false [2021-11-20 23:57:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 23:57:30,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:57:30,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954321864] [2021-11-20 23:57:30,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954321864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:57:30,936 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:57:30,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:57:30,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074225608] [2021-11-20 23:57:30,937 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:57:30,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:57:30,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:57:30,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:57:30,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2021-11-20 23:57:30,939 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:57:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:57:36,407 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-20 23:57:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:57:36,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2021-11-20 23:57:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:57:36,420 INFO L225 Difference]: With dead ends: 31 [2021-11-20 23:57:36,420 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 23:57:36,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2021-11-20 23:57:36,421 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:57:36,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 14 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 13 Unchecked, 2.0s Time] [2021-11-20 23:57:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 23:57:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-20 23:57:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0) internal successors, (22), 22 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:57:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-20 23:57:36,425 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 26 [2021-11-20 23:57:36,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:57:36,425 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-20 23:57:36,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:57:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-20 23:57:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 23:57:36,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:57:36,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:57:36,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:57:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:57:36,631 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-20 23:57:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:57:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1859738407, now seen corresponding path program 1 times [2021-11-20 23:57:36,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:57:36,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240583612] [2021-11-20 23:57:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:36,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:57:36,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:57:36,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:57:36,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:57:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:36,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:57:36,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:57:46,289 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (and (fp.isSubnormal |ULTIMATE.start_main_~f~0#1|) (not (fp.eq ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|)))) is different from false [2021-11-20 23:57:48,302 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~f~0#1| (_ FloatingPoint 8 24))) (and (fp.isSubnormal |ULTIMATE.start_main_~f~0#1|) (not (fp.eq ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~f~0#1|)) |ULTIMATE.start_main_~f~0#1|)))) is different from true [2021-11-20 23:57:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:57:48,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:59:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:59:18,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:59:18,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240583612] [2021-11-20 23:59:18,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240583612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:18,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:18,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-20 23:59:18,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415382813] [2021-11-20 23:59:18,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:18,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 23:59:18,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:59:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 23:59:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=4, NotChecked=14, Total=90 [2021-11-20 23:59:18,262 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:59:20,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:23,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:26,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:28,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:30,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:31,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:43,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:45,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:48,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:51,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:54,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:56,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:57,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:59,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:00,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:12,222 WARN L227 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:00:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:12,223 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-21 00:00:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:00:12,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-11-21 00:00:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:12,224 INFO L225 Difference]: With dead ends: 27 [2021-11-21 00:00:12,224 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 00:00:12,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 39.0s TimeCoverageRelationStatistics Valid=41, Invalid=90, Unknown=5, NotChecked=20, Total=156 [2021-11-21 00:00:12,225 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:12,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 6 Unknown, 24 Unchecked, 32.5s Time] [2021-11-21 00:00:12,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 00:00:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 00:00:12,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:00:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 00:00:12,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-11-21 00:00:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:12,226 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 00:00:12,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:00:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 00:00:12,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 00:00:12,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (12 of 13 remaining) [2021-11-21 00:00:12,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2021-11-21 00:00:12,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2021-11-21 00:00:12,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2021-11-21 00:00:12,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2021-11-21 00:00:12,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2021-11-21 00:00:12,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2021-11-21 00:00:12,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2021-11-21 00:00:12,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2021-11-21 00:00:12,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2021-11-21 00:00:12,231 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2021-11-21 00:00:12,231 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2021-11-21 00:00:12,231 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2021-11-21 00:00:12,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:00:12,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:00:12,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 00:00:12,597 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 397) no Hoare annotation was computed. [2021-11-21 00:00:12,597 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 387) no Hoare annotation was computed. [2021-11-21 00:00:12,597 INFO L858 garLoopResultBuilder]: For program point L399(line 399) no Hoare annotation was computed. [2021-11-21 00:00:12,597 INFO L858 garLoopResultBuilder]: For program point L399-2(line 399) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 402) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point L391(line 391) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point L391-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 392) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point L392(line 392) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point L392-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point L384(line 384) no Hoare annotation was computed. [2021-11-21 00:00:12,598 INFO L858 garLoopResultBuilder]: For program point L384-1(line 384) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L384-3(line 384) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 399) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L854 garLoopResultBuilder]: At program point L401(line 401) the Hoare annotation is: (and (= ((_ to_fp 11 53) currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0)) |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~smallestNormalFloat~0#1| ((_ to_fp 8 24) currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) (= ((_ to_fp 8 24) currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0)) |ULTIMATE.start_main_~largestSubnormalFloat~0#1|) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L401-1(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L393(line 393) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L393-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 394) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L402(line 402) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L402-2(line 402) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L394(line 394) no Hoare annotation was computed. [2021-11-21 00:00:12,599 INFO L858 garLoopResultBuilder]: For program point L394-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,600 INFO L854 garLoopResultBuilder]: At program point L386(line 386) the Hoare annotation is: (and (= ((_ to_fp 11 53) currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0)) |ULTIMATE.start_main_~v~0#1|) (= ((_ to_fp 8 24) currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0)) |ULTIMATE.start_main_~largestSubnormalFloat~0#1|) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_main_~smallestNormalFloat~0#1| ((_ to_fp 8 24) currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0)))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-21 00:00:12,600 INFO L858 garLoopResultBuilder]: For program point L386-1(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,600 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 393) no Hoare annotation was computed. [2021-11-21 00:00:12,600 INFO L861 garLoopResultBuilder]: At program point L403(lines 378 404) the Hoare annotation is: true [2021-11-21 00:00:12,600 INFO L858 garLoopResultBuilder]: For program point L395(line 395) no Hoare annotation was computed. [2021-11-21 00:00:12,601 INFO L858 garLoopResultBuilder]: For program point L395-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,602 INFO L858 garLoopResultBuilder]: For program point L387(line 387) no Hoare annotation was computed. [2021-11-21 00:00:12,602 INFO L858 garLoopResultBuilder]: For program point L387-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,602 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 00:00:12,602 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 396) no Hoare annotation was computed. [2021-11-21 00:00:12,602 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2021-11-21 00:00:12,602 INFO L858 garLoopResultBuilder]: For program point L396(line 396) no Hoare annotation was computed. [2021-11-21 00:00:12,603 INFO L858 garLoopResultBuilder]: For program point L396-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,603 INFO L858 garLoopResultBuilder]: For program point L388(line 388) no Hoare annotation was computed. [2021-11-21 00:00:12,603 INFO L858 garLoopResultBuilder]: For program point L388-2(line 388) no Hoare annotation was computed. [2021-11-21 00:00:12,604 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 00:00:12,604 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 395) no Hoare annotation was computed. [2021-11-21 00:00:12,604 INFO L858 garLoopResultBuilder]: For program point L397(line 397) no Hoare annotation was computed. [2021-11-21 00:00:12,605 INFO L858 garLoopResultBuilder]: For program point L397-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,605 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 398) no Hoare annotation was computed. [2021-11-21 00:00:12,605 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 388) no Hoare annotation was computed. [2021-11-21 00:00:12,605 INFO L858 garLoopResultBuilder]: For program point L398(line 398) no Hoare annotation was computed. [2021-11-21 00:00:12,605 INFO L858 garLoopResultBuilder]: For program point L398-2(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,606 INFO L854 garLoopResultBuilder]: At program point L390(line 390) the Hoare annotation is: (and (= ((_ to_fp 11 53) currentRoundingMode (/ 33554431.0 2854495385411919762116571938898990272765493248.0)) |ULTIMATE.start_main_~v~0#1|) (= |ULTIMATE.start_main_~smallestNormalFloat~0#1| ((_ to_fp 8 24) currentRoundingMode (/ 1.0 85070591730234615865843651857942052864.0))) (= ((_ to_fp 8 24) currentRoundingMode (/ 8388607.0 713623846352979940529142984724747568191373312.0)) |ULTIMATE.start_main_~largestSubnormalFloat~0#1|) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-21 00:00:12,606 INFO L858 garLoopResultBuilder]: For program point L390-1(lines 379 404) no Hoare annotation was computed. [2021-11-21 00:00:12,606 INFO L858 garLoopResultBuilder]: For program point L3-2(lines 2 4) no Hoare annotation was computed. [2021-11-21 00:00:12,606 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 2 4) the Hoare annotation is: true [2021-11-21 00:00:12,606 INFO L858 garLoopResultBuilder]: For program point L3(line 3) no Hoare annotation was computed. [2021-11-21 00:00:12,606 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 2 4) no Hoare annotation was computed. [2021-11-21 00:00:12,610 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:12,611 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:00:12,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:00:12 BoogieIcfgContainer [2021-11-21 00:00:12,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:00:12,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:00:12,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:00:12,621 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:00:12,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:31" (3/4) ... [2021-11-21 00:00:12,624 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 00:00:12,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-21 00:00:12,640 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-21 00:00:12,640 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-21 00:00:12,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 00:00:12,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 00:00:12,691 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:00:12,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:00:12,692 INFO L158 Benchmark]: Toolchain (without parser) took 350915.88ms. Allocated memory was 58.7MB in the beginning and 113.2MB in the end (delta: 54.5MB). Free memory was 34.5MB in the beginning and 68.7MB in the end (delta: -34.2MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-11-21 00:00:12,692 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:00:12,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 874.97ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 34.4MB in the beginning and 52.2MB in the end (delta: -17.8MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2021-11-21 00:00:12,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.52ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 49.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:00:12,694 INFO L158 Benchmark]: Boogie Preprocessor took 27.85ms. Allocated memory is still 73.4MB. Free memory was 49.5MB in the beginning and 48.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:00:12,695 INFO L158 Benchmark]: RCFGBuilder took 8546.52ms. Allocated memory is still 73.4MB. Free memory was 48.1MB in the beginning and 37.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:00:12,695 INFO L158 Benchmark]: TraceAbstraction took 341332.96ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 37.0MB in the beginning and 72.9MB in the end (delta: -35.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-11-21 00:00:12,696 INFO L158 Benchmark]: Witness Printer took 70.80ms. Allocated memory is still 113.2MB. Free memory was 72.9MB in the beginning and 68.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 00:00:12,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory was 39.8MB in the beginning and 39.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 874.97ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 34.4MB in the beginning and 52.2MB in the end (delta: -17.8MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.52ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 49.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.85ms. Allocated memory is still 73.4MB. Free memory was 49.5MB in the beginning and 48.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8546.52ms. Allocated memory is still 73.4MB. Free memory was 48.1MB in the beginning and 37.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 341332.96ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 37.0MB in the beginning and 72.9MB in the end (delta: -35.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 70.80ms. Allocated memory is still 113.2MB. Free memory was 72.9MB in the beginning and 68.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 387]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 388]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 393]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 394]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 395]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 396]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 397]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 398]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 399]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 402]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 341.3s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 99.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 73.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 578 SdHoareTripleChecker+Invalid, 72.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 83 IncrementalHoareTripleChecker+Unchecked, 303 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 276 IncrementalHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 275 mSDtfsCounter, 276 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 370 GetRequests, 326 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 55.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 60 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 238.6s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 364 ConstructedInterpolants, 30 QuantifiedInterpolants, 1792 SizeOfPredicates, 42 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 72/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold - InvariantResult [Line: 378]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-21 00:00:12,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e2c76fa-bc7a-45c0-93c9-2587839b8db2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE