./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/arctan_Pade.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8 --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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:35,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:35,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:35,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:35,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:35,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:35,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:35,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:35,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:35,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:35,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:35,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:35,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:35,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:35,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:35,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:35,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:35,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:35,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:35,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:35,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:35,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:35,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:35,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:35,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:35,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:35,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:35,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:35,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:35,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:35,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:35,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:35,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:35,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:35,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:35,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:35,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:35,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:35,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:35,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:35,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:35,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:16:35,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:35,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:35,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:35,860 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:35,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:35,861 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:35,861 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:16:35,861 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:35,861 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:35,862 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:16:35,862 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:16:35,862 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:35,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:16:35,863 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:16:35,863 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:16:35,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:35,864 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:16:35,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:16:35,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:16:35,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:35,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:35,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:35,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:35,866 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:35,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:16:35,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:35,867 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:35,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:35,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:35,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:35,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:35,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:35,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:35,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:35,869 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:16:35,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:16:35,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:35,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:35,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:35,871 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_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2021-11-07 02:16:36,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:36,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:36,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:36,204 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:36,205 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:36,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-11-07 02:16:36,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/52497e5e6/00cde7313c58441bb3a19825b76c687b/FLAG58ce931b8 [2021-11-07 02:16:36,990 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:36,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-11-07 02:16:37,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/52497e5e6/00cde7313c58441bb3a19825b76c687b/FLAG58ce931b8 [2021-11-07 02:16:37,336 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/52497e5e6/00cde7313c58441bb3a19825b76c687b [2021-11-07 02:16:37,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:37,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:37,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:37,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:37,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:37,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ca22a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37, skipping insertion in model container [2021-11-07 02:16:37,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:37,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:37,600 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_95e0d19a-46cd-41aa-b132-16624f1d917d/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2021-11-07 02:16:37,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:37,638 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:37,654 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_95e0d19a-46cd-41aa-b132-16624f1d917d/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2021-11-07 02:16:37,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:37,678 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:37,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37 WrapperNode [2021-11-07 02:16:37,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:37,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:37,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:37,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:37,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:37,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:37,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:37,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:37,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:37,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:37,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:37,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:37,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (1/1) ... [2021-11-07 02:16:37,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:37,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:37,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:37,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:16:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:16:38,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:16:38,630 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-07 02:16:38,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:38 BoogieIcfgContainer [2021-11-07 02:16:38,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:16:38,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:16:38,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:16:38,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:16:38,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:37" (1/3) ... [2021-11-07 02:16:38,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161a6263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:38, skipping insertion in model container [2021-11-07 02:16:38,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:37" (2/3) ... [2021-11-07 02:16:38,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161a6263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:38, skipping insertion in model container [2021-11-07 02:16:38,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:38" (3/3) ... [2021-11-07 02:16:38,643 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2021-11-07 02:16:38,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:16:38,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:16:38,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:16:38,737 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 [2021-11-07 02:16:38,737 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:16:38,752 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) [2021-11-07 02:16:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 02:16:38,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:38,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 02:16:38,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:38,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:38,781 INFO L85 PathProgramCache]: Analyzing trace with hash 111124, now seen corresponding path program 1 times [2021-11-07 02:16:38,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:16:38,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837561750] [2021-11-07 02:16:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:38,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:16:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:16:38,945 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:16:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:16:38,999 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:16:39,001 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:16:39,003 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:16:39,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:16:39,009 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 02:16:39,013 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:16:39,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:16:39 BoogieIcfgContainer [2021-11-07 02:16:39,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:16:39,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:16:39,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:16:39,038 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:16:39,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:38" (3/4) ... [2021-11-07 02:16:39,042 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 02:16:39,042 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:16:39,045 INFO L168 Benchmark]: Toolchain (without parser) took 1701.65 ms. Allocated memory is still 130.0 MB. Free memory was 101.7 MB in the beginning and 52.6 MB in the end (delta: 49.1 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:39,045 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:39,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.23 ms. Allocated memory is still 130.0 MB. Free memory was 101.5 MB in the beginning and 91.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:39,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.89 ms. Allocated memory is still 130.0 MB. Free memory was 91.7 MB in the beginning and 89.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:39,048 INFO L168 Benchmark]: Boogie Preprocessor took 61.69 ms. Allocated memory is still 130.0 MB. Free memory was 89.9 MB in the beginning and 88.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:39,049 INFO L168 Benchmark]: RCFGBuilder took 842.29 ms. Allocated memory is still 130.0 MB. Free memory was 88.7 MB in the beginning and 67.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:39,050 INFO L168 Benchmark]: TraceAbstraction took 401.32 ms. Allocated memory is still 130.0 MB. Free memory was 67.3 MB in the beginning and 53.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:39,050 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 130.0 MB. Free memory was 52.8 MB in the beginning and 52.6 MB in the end (delta: 220.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:39,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.23 ms. Allocated memory is still 130.0 MB. Free memory was 101.5 MB in the beginning and 91.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.89 ms. Allocated memory is still 130.0 MB. Free memory was 91.7 MB in the beginning and 89.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.69 ms. Allocated memory is still 130.0 MB. Free memory was 89.9 MB in the beginning and 88.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 842.29 ms. Allocated memory is still 130.0 MB. Free memory was 88.7 MB in the beginning and 67.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 401.32 ms. Allocated memory is still 130.0 MB. Free memory was 67.3 MB in the beginning and 53.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 130.0 MB. Free memory was 52.8 MB in the beginning and 52.6 MB in the end (delta: 220.9 kB). 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of someUnaryDOUBLEoperation at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 50. Possible FailurePath: [L20] const double Pi=3.141592653589793238; [L47] double a, r; [L49] a = __VERIFIER_nondet_double() [L15] COND FALSE !(!cond) [L41] COND TRUE x < 0 [L35] COND TRUE x > 1. [L24] double x_2 = x*x; [L25] return 1. - x_2 / (3. + 9./5.*x_2); [L30] return x*PADE_2_2(x); [L35] return Pi / 2. - ARCTAN_0_1(1. / x); [L41] return -ARCTAN_POS(-x); [L52] r = ARCTAN(a) [L17] COND TRUE !(cond) VAL [Pi=1570796326794896619/500000000000000000] [L17] reach_error() VAL [Pi=1570796326794896619/500000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 [2021-11-07 02:16:39,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/arctan_Pade.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8 --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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:16:41,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:16:41,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:16:42,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:16:42,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:16:42,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:16:42,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:16:42,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:16:42,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:16:42,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:16:42,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:16:42,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:16:42,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:16:42,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:16:42,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:16:42,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:16:42,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:16:42,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:16:42,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:16:42,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:16:42,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:16:42,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:16:42,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:16:42,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:16:42,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:16:42,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:16:42,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:16:42,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:16:42,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:16:42,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:16:42,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:16:42,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:16:42,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:16:42,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:16:42,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:16:42,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:16:42,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:16:42,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:16:42,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:16:42,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:16:42,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:16:42,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:16:42,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:16:42,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:16:42,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:16:42,134 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:16:42,134 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:16:42,135 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:16:42,135 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:16:42,135 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:16:42,135 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:16:42,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:16:42,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:16:42,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:16:42,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:16:42,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:16:42,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:16:42,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:16:42,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:16:42,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:16:42,139 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:16:42,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:16:42,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:16:42,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:16:42,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:16:42,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:16:42,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:16:42,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:16:42,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:42,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:16:42,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:16:42,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:16:42,142 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:16:42,143 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:42,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:16:42,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:16:42,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:16:42,144 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_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2021-11-07 02:16:42,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:16:42,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:16:42,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:16:42,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:16:42,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:16:42,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-11-07 02:16:42,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/f8b889280/78dae9294fa7463bbdeae85c2f50966a/FLAGc80254e4f [2021-11-07 02:16:43,242 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:16:43,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-11-07 02:16:43,253 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/f8b889280/78dae9294fa7463bbdeae85c2f50966a/FLAGc80254e4f [2021-11-07 02:16:43,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/data/f8b889280/78dae9294fa7463bbdeae85c2f50966a [2021-11-07 02:16:43,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:16:43,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:16:43,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:43,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:16:43,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:16:43,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a1efae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:43, skipping insertion in model container [2021-11-07 02:16:43,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:43" (1/1) ... [2021-11-07 02:16:43,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:16:43,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:16:43,884 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_95e0d19a-46cd-41aa-b132-16624f1d917d/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2021-11-07 02:16:43,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:43,945 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:16:43,965 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_95e0d19a-46cd-41aa-b132-16624f1d917d/sv-benchmarks/c/float-benchs/arctan_Pade.c[665,678] [2021-11-07 02:16:43,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:16:44,036 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:16:44,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44 WrapperNode [2021-11-07 02:16:44,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:16:44,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:44,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:16:44,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:16:44,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:16:44,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:16:44,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:16:44,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:16:44,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:16:44,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:16:44,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:16:44,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:16:44,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (1/1) ... [2021-11-07 02:16:44,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:16:44,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:44,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:16:44,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:16:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:16:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:16:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:16:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:17:01,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:17:01,002 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-07 02:17:01,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:01 BoogieIcfgContainer [2021-11-07 02:17:01,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:17:01,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:17:01,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:17:01,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:17:01,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:43" (1/3) ... [2021-11-07 02:17:01,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e03a6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:01, skipping insertion in model container [2021-11-07 02:17:01,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:44" (2/3) ... [2021-11-07 02:17:01,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e03a6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:17:01, skipping insertion in model container [2021-11-07 02:17:01,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:17:01" (3/3) ... [2021-11-07 02:17:01,018 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2021-11-07 02:17:01,024 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:17:01,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:17:01,087 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:17:01,094 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 [2021-11-07 02:17:01,095 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:17:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-11-07 02:17:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 02:17:01,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:01,118 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:01,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:17:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:01,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1916877351, now seen corresponding path program 1 times [2021-11-07 02:17:01,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:01,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130778639] [2021-11-07 02:17:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:01,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:01,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:01,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:01,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:17:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:02,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:17:02,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:17:03,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:17:03,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:03,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130778639] [2021-11-07 02:17:03,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130778639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:03,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:17:03,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:17:03,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675185071] [2021-11-07 02:17:03,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:17:03,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:03,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:17:03,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:17:03,350 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 02:17:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:03,384 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-11-07 02:17:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:17:03,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-07 02:17:03,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:03,396 INFO L225 Difference]: With dead ends: 47 [2021-11-07 02:17:03,396 INFO L226 Difference]: Without dead ends: 21 [2021-11-07 02:17:03,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:17:03,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-07 02:17:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-07 02:17:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2021-11-07 02:17:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-07 02:17:03,441 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2021-11-07 02:17:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:03,442 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-07 02:17:03,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 02:17:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-07 02:17:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 02:17:03,444 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:03,445 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:03,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:03,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:03,669 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:17:03,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1523850341, now seen corresponding path program 1 times [2021-11-07 02:17:03,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:03,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959194067] [2021-11-07 02:17:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:03,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:03,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:03,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:03,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:17:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:09,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 02:17:10,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:15,518 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:17:20,545 WARN L207 SmtUtils]: Spent 5.03 s on a formula simplification that was a NOOP. DAG size: 4 [2021-11-07 02:17:25,639 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:17:35,349 WARN L207 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:17:37,649 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_ARCTAN_0_1_~x .cse0) (not (fp.gt .cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))))) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x c_ULTIMATE.start_ARCTAN_0_1_~x))) (fp.div c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse1))))) |c_ULTIMATE.start_PADE_2_2_#res|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:17:42,855 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:17:52,658 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:17:55,020 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_ARCTAN_0_1_#res| (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse2 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2))))))) (not (fp.gt .cse0 .cse1))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:18:00,215 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:18:05,415 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:18:12,457 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.gt .cse0 .cse1)) (= |c_ULTIMATE.start_ARCTAN_POS_#res| (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse2 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2)))))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:18:17,681 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:18:27,505 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:18:29,870 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_ARCTAN_#res| (fp.neg (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse2 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse2 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse2)))))))) (not (fp.gt .cse0 .cse1))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:18:39,741 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:18:44,924 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:18:57,073 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:19:02,261 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:19:12,109 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:19:17,313 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:19:22,538 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:19:27,737 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-07 02:19:35,307 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:19:40,526 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 02:19:45,761 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:19:51,043 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:19:56,291 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:20:01,542 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:20:06,768 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:20:11,981 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:20:17,215 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-07 02:20:22,436 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 02:20:27,710 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:20:32,962 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:20:35,323 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (not (fp.gt .cse0 .cse1)) (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (let ((.cse4 (fp.neg (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven .cse1 (let ((.cse6 (fp.mul roundNearestTiesToEven .cse0 .cse0))) (fp.div roundNearestTiesToEven .cse6 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 9.0) ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) .cse6)))))))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1571.0 1000.0)))) (let ((.cse2 (fp.leq .cse4 .cse5)) (.cse3 (fp.geq .cse4 (fp.neg .cse5)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse2) (not .cse3))) (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse3))))))) is different from false [2021-11-07 02:20:37,534 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (not (fp.gt .cse0 .cse1)) (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (let ((.cse4 (fp.neg (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven .cse1 (let ((.cse6 (fp.mul roundNearestTiesToEven .cse0 .cse0))) (fp.div roundNearestTiesToEven .cse6 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 9.0) ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) .cse6)))))))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1571.0 1000.0)))) (let ((.cse2 (fp.leq .cse4 .cse5)) (.cse3 (fp.geq .cse4 (fp.neg .cse5)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse2) (not .cse3))) (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse3))))))) is different from true [2021-11-07 02:20:47,461 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:20:52,710 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:21:04,991 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:21:10,274 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:21:20,193 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 7 [2021-11-07 02:21:25,462 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:21:30,728 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:21:35,986 WARN L207 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-07 02:21:38,321 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (not (fp.gt .cse0 .cse1)) (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (let ((.cse2 (fp.neg (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven .cse1 (let ((.cse4 (fp.mul roundNearestTiesToEven .cse0 .cse0))) (fp.div roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 9.0) ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) .cse4)))))))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1571.0 1000.0)))) (or (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 (fp.neg .cse3)))))))) is different from false [2021-11-07 02:21:40,531 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (not (fp.gt .cse0 .cse1)) (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (let ((.cse2 (fp.neg (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven .cse1 (let ((.cse4 (fp.mul roundNearestTiesToEven .cse0 .cse0))) (fp.div roundNearestTiesToEven .cse4 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 9.0) ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) .cse4)))))))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1571.0 1000.0)))) (or (not (fp.leq .cse2 .cse3)) (not (fp.geq .cse2 (fp.neg .cse3)))))))) is different from true [2021-11-07 02:21:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:40,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:51,860 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x |c_ULTIMATE.start_PADE_2_2_#res|))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-11-07 02:21:53,898 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x |c_ULTIMATE.start_PADE_2_2_#res|))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2021-11-07 02:21:59,295 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:22:04,665 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-07 02:22:10,033 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 02:22:12,392 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.gt c_ULTIMATE.start_ARCTAN_POS_~x .cse0) (let ((.cse1 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x (fp.sub c_currentRoundingMode .cse0 (let ((.cse3 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x c_ULTIMATE.start_ARCTAN_POS_~x))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3)))))))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))))) is different from false [2021-11-07 02:22:14,745 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.gt c_ULTIMATE.start_ARCTAN_POS_~x .cse0) (let ((.cse1 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x (fp.sub c_currentRoundingMode .cse0 (let ((.cse3 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x c_ULTIMATE.start_ARCTAN_POS_~x))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3)))))))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))))) is different from true [2021-11-07 02:22:20,095 WARN L207 SmtUtils]: Spent 5.32 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:22:29,988 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:22:35,111 WARN L207 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:22:40,258 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:22:50,036 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:22:55,172 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:23:00,296 WARN L207 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:23:05,406 WARN L207 SmtUtils]: Spent 5.11 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 02:23:07,611 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (or (fp.gt .cse0 .cse1) (not (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse2 (fp.neg (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse4 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse4)))))))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq .cse2 (fp.neg .cse3)) (fp.leq .cse2 .cse3)))))) is different from false [2021-11-07 02:23:09,927 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (or (fp.gt .cse0 .cse1) (not (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse2 (fp.neg (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse4 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse4)))))))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq .cse2 (fp.neg .cse3)) (fp.leq .cse2 .cse3)))))) is different from true [2021-11-07 02:23:15,074 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:23:24,894 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:23:30,058 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:23:35,227 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:23:45,090 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:23:50,332 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:23:55,491 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:24:00,669 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 02:24:05,864 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:24:15,642 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:24:20,795 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:24:25,928 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:24:35,715 WARN L207 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:24:40,913 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:24:46,053 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:24:51,204 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 02:24:56,388 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:25:06,128 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:25:11,325 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:25:16,486 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:25:26,291 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:25:31,501 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:25:36,660 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-07 02:25:41,831 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 02:25:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:25:41,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:41,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959194067] [2021-11-07 02:25:41,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959194067] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:41,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:41,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 16 [2021-11-07 02:25:41,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422254750] [2021-11-07 02:25:41,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 02:25:41,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 02:25:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=46, Unknown=14, NotChecked=180, Total=272 [2021-11-07 02:25:41,846 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 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) [2021-11-07 02:25:44,136 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (or (fp.gt .cse0 .cse1) (not (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse2 (fp.neg (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse4 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse4)))))))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq .cse2 (fp.neg .cse3)) (fp.leq .cse2 .cse3)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:25:46,446 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (or (fp.gt .cse0 .cse1) (not (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse2 (fp.neg (fp.mul c_currentRoundingMode .cse0 (fp.sub c_currentRoundingMode .cse1 (let ((.cse4 (fp.mul c_currentRoundingMode .cse0 .cse0))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse4)))))))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq .cse2 (fp.neg .cse3)) (fp.leq .cse2 .cse3)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-07 02:25:48,744 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_ARCTAN_POS_~x (fp.neg ULTIMATE.start_ARCTAN_~x)))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.gt c_ULTIMATE.start_ARCTAN_POS_~x .cse0) (let ((.cse1 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x (fp.sub c_currentRoundingMode .cse0 (let ((.cse3 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x c_ULTIMATE.start_ARCTAN_POS_~x))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3)))))))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:25:51,062 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_ARCTAN_POS_~x (fp.neg ULTIMATE.start_ARCTAN_~x)))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.gt c_ULTIMATE.start_ARCTAN_POS_~x .cse0) (let ((.cse1 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x (fp.sub c_currentRoundingMode .cse0 (let ((.cse3 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_POS_~x c_ULTIMATE.start_ARCTAN_POS_~x))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3)))))))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.leq .cse1 .cse2) (fp.geq .cse1 (fp.neg .cse2)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-07 02:25:53,393 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x |c_ULTIMATE.start_PADE_2_2_#res|))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_ARCTAN_0_1_~x .cse0) (not (fp.gt .cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))))) (fp.leq .cse1 .cse2) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse3 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x c_ULTIMATE.start_ARCTAN_0_1_~x))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3))))) |c_ULTIMATE.start_PADE_2_2_#res|) (fp.geq .cse1 (fp.neg .cse2)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-07 02:25:55,432 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.neg (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x |c_ULTIMATE.start_PADE_2_2_#res|))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_ARCTAN_0_1_~x .cse0) (not (fp.gt .cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))))) (fp.leq .cse1 .cse2) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse3 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x c_ULTIMATE.start_ARCTAN_0_1_~x))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3))))) |c_ULTIMATE.start_PADE_2_2_#res|) (fp.geq .cse1 (fp.neg .cse2)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-07 02:26:20,692 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.neg |c_ULTIMATE.start_ARCTAN_0_1_#res|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1) (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse2 (fp.neg ULTIMATE.start_ARCTAN_~x)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_ARCTAN_0_1_#res| (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode .cse3 (let ((.cse4 (fp.mul c_currentRoundingMode .cse2 .cse2))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse4))))))) (not (fp.gt .cse2 .cse3))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-07 02:26:22,899 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.neg |c_ULTIMATE.start_ARCTAN_0_1_#res|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1) (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse2 (fp.neg ULTIMATE.start_ARCTAN_~x)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_ARCTAN_0_1_#res| (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode .cse3 (let ((.cse4 (fp.mul c_currentRoundingMode .cse2 .cse2))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse4))))))) (not (fp.gt .cse2 .cse3))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-07 02:26:38,530 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.neg |c_ULTIMATE.start_ARCTAN_POS_#res|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq .cse0 (fp.neg .cse1)) (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.gt .cse2 .cse3)) (= |c_ULTIMATE.start_ARCTAN_POS_#res| (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode .cse3 (let ((.cse4 (fp.mul c_currentRoundingMode .cse2 .cse2))) (fp.div c_currentRoundingMode .cse4 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse4)))))))))) (fp.leq .cse0 .cse1) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-07 02:26:48,401 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1571.0 1000.0)))) (and (fp.geq |c_ULTIMATE.start_ARCTAN_#res| (fp.neg .cse0)) (fp.leq |c_ULTIMATE.start_ARCTAN_#res| .cse0) (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 (fp.neg ULTIMATE.start_ARCTAN_~x)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_ARCTAN_#res| (fp.neg (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode .cse2 (let ((.cse3 (fp.mul c_currentRoundingMode .cse1 .cse1))) (fp.div c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse3)))))))) (not (fp.gt .cse1 .cse2))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-07 02:26:50,795 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse0 (fp.neg ULTIMATE.start_ARCTAN_~x))) (and (not (fp.gt .cse0 .cse1)) (fp.lt ULTIMATE.start_ARCTAN_~x ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (let ((.cse4 (fp.neg (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven .cse1 (let ((.cse6 (fp.mul roundNearestTiesToEven .cse0 .cse0))) (fp.div roundNearestTiesToEven .cse6 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 3.0) (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 9.0) ((_ to_fp 11 53) roundNearestTiesToEven 5.0)) .cse6)))))))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1571.0 1000.0)))) (let ((.cse2 (fp.leq .cse4 .cse5)) (.cse3 (fp.geq .cse4 (fp.neg .cse5)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse2) (not .cse3))) (and .cse2 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse3)))))))) is different from false [2021-11-07 02:26:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:26:50,942 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-07 02:26:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:26:50,943 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 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 12 [2021-11-07 02:26:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:26:50,943 INFO L225 Difference]: With dead ends: 26 [2021-11-07 02:26:50,943 INFO L226 Difference]: Without dead ends: 19 [2021-11-07 02:26:50,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 58.0s TimeCoverageRelationStatistics Valid=46, Invalid=49, Unknown=25, NotChecked=432, Total=552 [2021-11-07 02:26:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-07 02:26:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-07 02:26:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-11-07 02:26:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-07 02:26:50,950 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2021-11-07 02:26:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:26:50,951 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-07 02:26:50,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.411764705882353) internal successors, (24), 16 states have internal predecessors, (24), 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) [2021-11-07 02:26:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-07 02:26:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 02:26:50,952 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:26:50,952 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:26:50,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:26:51,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:26:51,159 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:26:51,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:26:51,159 INFO L85 PathProgramCache]: Analyzing trace with hash 316479519, now seen corresponding path program 1 times [2021-11-07 02:26:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:26:51,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471822980] [2021-11-07 02:26:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:26:51,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:26:51,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:26:51,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:26:51,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:27:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:27:12,294 WARN L261 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:27:12,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:27:21,918 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 02:27:27,767 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:27:33,628 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:27:43,202 WARN L207 SmtUtils]: Spent 5.02 s on a formula simplification that was a NOOP. DAG size: 5 [2021-11-07 02:27:48,262 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 02:27:50,783 WARN L838 $PredicateComparison]: unable to prove that (and (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_ARCTAN_0_1_~x c_ULTIMATE.start_ARCTAN_0_1_~x))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))) |c_ULTIMATE.start_PADE_2_2_#res|) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0)) c_~Pi~0) (exists ((ULTIMATE.start_ARCTAN_~x (_ FloatingPoint 11 53))) (let ((.cse2 (fp.neg ULTIMATE.start_ARCTAN_~x)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (= (fp.div c_currentRoundingMode .cse1 .cse2) c_ULTIMATE.start_ARCTAN_0_1_~x) (fp.gt .cse2 .cse1) (fp.geq ULTIMATE.start_ARCTAN_~x (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 179000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:27:55,936 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-07 02:28:01,964 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 02:28:03,086 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 02:28:03,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 02:28:03,089 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:28:03,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471822980] [2021-11-07 02:28:03,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-07 02:28:03,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599316817] [2021-11-07 02:28:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:03,091 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:28:03,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:28:03,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:28:03,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:28:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:28:11,784 WARN L261 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 02:28:11,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 02:28:11,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108986633] [2021-11-07 02:28:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:28:11,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:28:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:28:11,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:28:11,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95e0d19a-46cd-41aa-b132-16624f1d917d/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process