./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8 --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 1d97d268d682e2021ff98bdbb1deaf100696d038 ............................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8 --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 1d97d268d682e2021ff98bdbb1deaf100696d038 ..................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:04:18,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:04:18,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:04:18,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:04:18,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:04:18,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:04:18,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:04:18,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:04:18,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:04:18,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:04:18,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:04:18,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:04:18,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:04:18,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:04:18,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:04:18,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:04:18,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:04:18,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:04:18,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:04:18,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:04:18,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:04:18,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:04:18,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:04:18,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:04:18,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:04:18,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:04:18,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:04:18,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:04:18,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:04:18,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:04:18,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:04:18,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:04:18,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:04:18,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:04:18,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:04:18,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:04:18,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:04:18,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:04:18,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:04:18,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:04:18,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:04:18,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:04:18,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:04:18,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:04:18,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:04:18,951 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:04:18,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:04:18,951 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:04:18,952 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:04:18,952 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:04:18,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:04:18,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:04:18,960 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:04:18,960 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:04:18,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:04:18,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:04:18,961 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:04:18,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:04:18,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:04:18,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:04:18,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:04:18,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:04:18,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:04:18,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:04:18,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:04:18,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:04:18,964 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:04:18,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:04:18,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:04:18,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:04:18,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:04:18,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:04:18,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:04:18,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:04:18,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:04:18,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:04:18,969 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:04:18,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:04:18,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:04:18,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:04:18,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:04:18,970 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_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d97d268d682e2021ff98bdbb1deaf100696d038 [2021-10-13 07:04:19,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:04:19,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:04:19,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:04:19,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:04:19,262 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:04:19,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-13 07:04:19,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/956db5ee1/be60b48820af431b885bb64aa91fd452/FLAGd9eb1c7ae [2021-10-13 07:04:19,792 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:04:19,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-13 07:04:19,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/956db5ee1/be60b48820af431b885bb64aa91fd452/FLAGd9eb1c7ae [2021-10-13 07:04:20,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/956db5ee1/be60b48820af431b885bb64aa91fd452 [2021-10-13 07:04:20,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:04:20,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:04:20,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:04:20,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:04:20,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:04:20,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7a083d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20, skipping insertion in model container [2021-10-13 07:04:20,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:04:20,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:04:20,376 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-13 07:04:20,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:04:20,411 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:04:20,425 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-13 07:04:20,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:04:20,452 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:04:20,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20 WrapperNode [2021-10-13 07:04:20,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:04:20,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:04:20,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:04:20,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:04:20,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:04:20,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:04:20,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:04:20,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:04:20,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:04:20,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:04:20,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:04:20,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:04:20,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (1/1) ... [2021-10-13 07:04:20,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:04:20,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:04:20,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:04:20,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:04:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:04:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:04:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 07:04:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:04:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 07:04:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:04:20,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:04:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:04:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:04:21,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:04:21,145 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:04:21,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:21 BoogieIcfgContainer [2021-10-13 07:04:21,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:04:21,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:04:21,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:04:21,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:04:21,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:04:20" (1/3) ... [2021-10-13 07:04:21,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488e63d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:21, skipping insertion in model container [2021-10-13 07:04:21,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:20" (2/3) ... [2021-10-13 07:04:21,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488e63d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:21, skipping insertion in model container [2021-10-13 07:04:21,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:21" (3/3) ... [2021-10-13 07:04:21,157 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-10-13 07:04:21,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:04:21,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:04:21,214 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:04:21,221 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, mConcurrency=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 [2021-10-13 07:04:21,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:04:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2021-10-13 07:04:21,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:04:21,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:04:21,237 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:04:21,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:04:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:04:21,244 INFO L82 PathProgramCache]: Analyzing trace with hash 70827, now seen corresponding path program 1 times [2021-10-13 07:04:21,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:04:21,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519357589] [2021-10-13 07:04:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:21,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:04:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:04:21,412 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:04:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:04:21,478 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:04:21,480 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:04:21,481 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:04:21,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:04:21,490 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:04:21,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:04:21 BoogieIcfgContainer [2021-10-13 07:04:21,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:04:21,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:04:21,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:04:21,513 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:04:21,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:21" (3/4) ... [2021-10-13 07:04:21,517 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:04:21,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:04:21,519 INFO L168 Benchmark]: Toolchain (without parser) took 1357.35 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:21,520 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 61.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:04:21,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.17 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.5 MB in the beginning and 94.6 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:21,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:04:21,522 INFO L168 Benchmark]: Boogie Preprocessor took 27.93 ms. Allocated memory is still 119.5 MB. Free memory was 93.2 MB in the beginning and 91.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:04:21,523 INFO L168 Benchmark]: RCFGBuilder took 622.17 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 72.3 MB in the end (delta: 19.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:21,524 INFO L168 Benchmark]: TraceAbstraction took 362.33 ms. Allocated memory is still 119.5 MB. Free memory was 71.5 MB in the beginning and 56.1 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:21,524 INFO L168 Benchmark]: Witness Printer took 4.77 ms. Allocated memory is still 119.5 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:04:21,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 61.9 MB in the beginning and 61.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.17 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 57.5 MB in the beginning and 94.6 MB in the end (delta: -37.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.93 ms. Allocated memory is still 119.5 MB. Free memory was 93.2 MB in the beginning and 91.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 622.17 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 72.3 MB in the end (delta: 19.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 362.33 ms. Allocated memory is still 119.5 MB. Free memory was 71.5 MB in the beginning and 56.1 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.77 ms. Allocated memory is still 119.5 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 61. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r [L43] COND FALSE !(exp % 2 == 0) [L47] r = r * C0 [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L14] reach_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 276.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.1ms SsaConstructionTime, 74.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:04:21,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:04:24,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:04:24,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:04:24,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:04:24,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:04:24,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:04:24,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:04:24,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:04:24,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:04:24,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:04:24,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:04:24,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:04:24,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:04:24,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:04:24,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:04:24,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:04:24,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:04:24,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:04:24,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:04:24,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:04:24,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:04:24,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:04:24,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:04:24,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:04:24,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:04:24,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:04:24,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:04:24,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:04:24,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:04:24,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:04:24,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:04:24,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:04:24,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:04:24,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:04:24,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:04:24,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:04:24,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:04:24,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:04:24,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:04:24,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:04:24,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:04:24,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:04:24,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:04:24,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:04:24,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:04:24,355 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:04:24,355 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:04:24,356 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:04:24,356 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:04:24,356 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:04:24,356 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:04:24,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:04:24,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:04:24,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:04:24,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:04:24,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:04:24,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:04:24,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:04:24,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:04:24,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:04:24,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:04:24,359 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:04:24,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:04:24,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:04:24,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:04:24,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:04:24,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:04:24,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:04:24,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:04:24,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:04:24,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:04:24,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:04:24,361 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:04:24,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:04:24,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:04:24,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:04:24,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:04:24,361 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_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d97d268d682e2021ff98bdbb1deaf100696d038 [2021-10-13 07:04:24,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:04:24,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:04:24,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:04:24,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:04:24,862 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:04:24,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-13 07:04:24,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/6694ceb7c/30505ae240af45f387a9bf186484c6bf/FLAG261582e0d [2021-10-13 07:04:25,524 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:04:25,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-13 07:04:25,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/6694ceb7c/30505ae240af45f387a9bf186484c6bf/FLAG261582e0d [2021-10-13 07:04:25,830 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/data/6694ceb7c/30505ae240af45f387a9bf186484c6bf [2021-10-13 07:04:25,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:04:25,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:04:25,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:04:25,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:04:25,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:04:25,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:25" (1/1) ... [2021-10-13 07:04:25,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e89f672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:25, skipping insertion in model container [2021-10-13 07:04:25,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:25" (1/1) ... [2021-10-13 07:04:25,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:04:25,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:04:26,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-13 07:04:26,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:04:26,042 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:04:26,052 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-13 07:04:26,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:04:26,107 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:04:26,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26 WrapperNode [2021-10-13 07:04:26,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:04:26,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:04:26,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:04:26,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:04:26,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:04:26,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:04:26,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:04:26,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:04:26,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:04:26,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:04:26,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:04:26,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:04:26,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (1/1) ... [2021-10-13 07:04:26,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:04:26,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:04:26,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:04:26,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:04:26,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-13 07:04:26,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-13 07:04:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:04:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:04:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:04:26,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:04:26,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:04:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:04:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:04:31,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:04:31,029 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:04:31,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:31 BoogieIcfgContainer [2021-10-13 07:04:31,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:04:31,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:04:31,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:04:31,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:04:31,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:04:25" (1/3) ... [2021-10-13 07:04:31,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd95bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:31, skipping insertion in model container [2021-10-13 07:04:31,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:26" (2/3) ... [2021-10-13 07:04:31,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd95bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:31, skipping insertion in model container [2021-10-13 07:04:31,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:31" (3/3) ... [2021-10-13 07:04:31,041 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-10-13 07:04:31,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:04:31,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:04:31,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:04:31,105 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, mConcurrency=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 [2021-10-13 07:04:31,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:04:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-10-13 07:04:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:04:31,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:04:31,124 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:04:31,125 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:04:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:04:31,131 INFO L82 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2021-10-13 07:04:31,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:04:31,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591555466] [2021-10-13 07:04:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:31,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:04:31,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:04:31,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:04:31,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:04:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:04:32,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:04:32,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:04:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:04:32,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:04:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:04:32,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:04:32,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591555466] [2021-10-13 07:04:32,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591555466] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:04:32,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:04:32,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:04:32,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571037915] [2021-10-13 07:04:32,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:04:32,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:04:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:04:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:04:32,864 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 07:04:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:04:32,881 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-13 07:04:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:04:32,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-13 07:04:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:04:32,891 INFO L225 Difference]: With dead ends: 25 [2021-10-13 07:04:32,892 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 07:04:32,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:04:32,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 07:04:32,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 07:04:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-10-13 07:04:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 07:04:32,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-10-13 07:04:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:04:32,925 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 07:04:32,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 07:04:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 07:04:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:04:32,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:04:32,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:04:32,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:04:33,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:04:33,127 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:04:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:04:33,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2021-10-13 07:04:33,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:04:33,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556018545] [2021-10-13 07:04:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:04:33,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:04:33,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:04:33,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:04:33,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:04:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:04:34,784 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:04:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:04:36,327 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:04:36,328 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:04:36,330 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:04:36,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:04:36,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:04:36,538 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:04:36,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:04:36 BoogieIcfgContainer [2021-10-13 07:04:36,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:04:36,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:04:36,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:04:36,580 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:04:36,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:31" (3/4) ... [2021-10-13 07:04:36,586 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:04:36,653 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:04:36,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:04:36,656 INFO L168 Benchmark]: Toolchain (without parser) took 10820.43 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 48.9 MB in the beginning and 76.5 MB in the end (delta: -27.6 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:36,656 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:04:36,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.26 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 52.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:36,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.45 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 50.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:36,658 INFO L168 Benchmark]: Boogie Preprocessor took 65.41 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 49.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:04:36,659 INFO L168 Benchmark]: RCFGBuilder took 4783.20 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 37.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:36,660 INFO L168 Benchmark]: TraceAbstraction took 5545.24 ms. Allocated memory is still 69.2 MB. Free memory was 37.2 MB in the beginning and 31.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:36,661 INFO L168 Benchmark]: Witness Printer took 73.76 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 31.6 MB in the beginning and 77.0 MB in the end (delta: -45.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:04:36,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.26 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 52.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.45 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 50.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.41 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 49.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4783.20 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 37.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5545.24 ms. Allocated memory is still 69.2 MB. Free memory was 37.2 MB in the beginning and 31.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 73.76 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 31.6 MB in the beginning and 77.0 MB in the end (delta: -45.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L14] reach_error() VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5441.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.5ms, AutomataDifference: 60.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.9ms SsaConstructionTime, 2799.7ms SatisfiabilityAnalysisTime, 321.2ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-13 07:04:36,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cedd72-7fe3-4db3-bb95-d29b4323f88a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...