./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:12,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:12,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:12,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:12,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:12,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:12,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:12,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:12,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:12,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:12,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:12,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:12,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:12,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:12,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:12,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:12,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:12,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:12,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:12,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:12,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:12,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:12,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:12,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:12,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:12,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:12,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:12,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:12,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:12,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:12,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:12,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:12,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:12,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:12,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:12,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:12,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:12,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:12,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:12,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:12,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:12,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:42:12,785 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:12,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:12,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:12,786 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:12,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:12,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:12,787 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:42:12,787 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:12,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:12,788 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:42:12,788 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:42:12,788 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:12,789 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:42:12,789 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:42:12,789 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:42:12,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:12,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:42:12,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:42:12,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:42:12,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:12,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:12,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:12,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:12,792 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:42:12,792 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:42:12,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:12,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:12,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:12,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:12,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:12,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:12,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:12,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:12,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:12,794 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:42:12,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:42:12,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:12,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:12,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:12,796 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_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 [2021-11-03 03:42:13,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:13,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:13,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:13,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:13,083 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:13,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-03 03:42:13,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/c580cc668/4bde4b252bfe45419519d3c4b005c5f6/FLAG06c5e973e [2021-11-03 03:42:13,656 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:13,657 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-03 03:42:13,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/c580cc668/4bde4b252bfe45419519d3c4b005c5f6/FLAG06c5e973e [2021-11-03 03:42:14,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/c580cc668/4bde4b252bfe45419519d3c4b005c5f6 [2021-11-03 03:42:14,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:14,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:14,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:14,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:14,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:14,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1c80ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14, skipping insertion in model container [2021-11-03 03:42:14,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:14,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:14,294 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_3b1f419b-577a-46e8-b0ef-c6e3c4396240/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-03 03:42:14,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:14,305 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:42:14,340 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_3b1f419b-577a-46e8-b0ef-c6e3c4396240/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-03 03:42:14,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:14,357 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:42:14,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14 WrapperNode [2021-11-03 03:42:14,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:14,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:14,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:42:14,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:42:14,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:14,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:42:14,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:42:14,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:42:14,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:42:14,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:42:14,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:42:14,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:42:14,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (1/1) ... [2021-11-03 03:42:14,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:14,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:14,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:42:14,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:42:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:42:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:42:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 03:42:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:42:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 03:42:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:42:14,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:42:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:42:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-03 03:42:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:42:15,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:42:15,071 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-03 03:42:15,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:15 BoogieIcfgContainer [2021-11-03 03:42:15,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:42:15,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:42:15,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:42:15,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:42:15,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:14" (1/3) ... [2021-11-03 03:42:15,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5636dc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:15, skipping insertion in model container [2021-11-03 03:42:15,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:14" (2/3) ... [2021-11-03 03:42:15,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5636dc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:15, skipping insertion in model container [2021-11-03 03:42:15,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:15" (3/3) ... [2021-11-03 03:42:15,087 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621a.c [2021-11-03 03:42:15,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:42:15,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:42:15,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:42:15,168 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:42:15,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:42:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:42:15,195 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:15,195 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:15,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:15,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 725631262, now seen corresponding path program 1 times [2021-11-03 03:42:15,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:15,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051855961] [2021-11-03 03:42:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:15,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:15,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:42:15,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051855961] [2021-11-03 03:42:15,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051855961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:15,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:15,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:42:15,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861507789] [2021-11-03 03:42:15,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:42:15,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:42:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:42:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:42:15,473 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:15,489 INFO L93 Difference]: Finished difference Result 47 states and 71 transitions. [2021-11-03 03:42:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:42:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 03:42:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:15,498 INFO L225 Difference]: With dead ends: 47 [2021-11-03 03:42:15,498 INFO L226 Difference]: Without dead ends: 22 [2021-11-03 03:42:15,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:42:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-03 03:42:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-03 03:42:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-03 03:42:15,531 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2021-11-03 03:42:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:15,531 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-03 03:42:15,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-03 03:42:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:42:15,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:15,532 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:15,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:42:15,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1997685412, now seen corresponding path program 1 times [2021-11-03 03:42:15,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:15,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776755975] [2021-11-03 03:42:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:15,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:42:15,644 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:42:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:42:15,769 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 03:42:15,774 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:42:15,776 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:42:15,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:42:15,781 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 03:42:15,784 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:42:15,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:42:15 BoogieIcfgContainer [2021-11-03 03:42:15,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:42:15,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:42:15,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:42:15,846 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:42:15,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:15" (3/4) ... [2021-11-03 03:42:15,851 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 03:42:15,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:42:15,854 INFO L168 Benchmark]: Toolchain (without parser) took 1802.95 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 66.7 MB in the beginning and 77.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,855 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 72.5 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:15,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.47 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 74.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.69 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 72.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,864 INFO L168 Benchmark]: Boogie Preprocessor took 46.30 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 70.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,864 INFO L168 Benchmark]: RCFGBuilder took 611.19 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 50.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:15,865 INFO L168 Benchmark]: TraceAbstraction took 764.43 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 49.7 MB in the beginning and 78.6 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:15,865 INFO L168 Benchmark]: Witness Printer took 5.92 ms. Allocated memory is still 127.9 MB. Free memory is still 77.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:15,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 100.7 MB. Free memory was 72.5 MB in the beginning and 72.5 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.47 ms. Allocated memory is still 100.7 MB. Free memory was 66.7 MB in the beginning and 74.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.69 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 72.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.30 ms. Allocated memory is still 100.7 MB. Free memory was 72.3 MB in the beginning and 70.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 611.19 ms. Allocated memory is still 100.7 MB. Free memory was 70.3 MB in the beginning and 50.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 764.43 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 49.7 MB in the beginning and 78.6 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.92 ms. Allocated memory is still 127.9 MB. Free memory is still 77.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 147]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryDOUBLEComparisonOperation at line 146. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L143] double x = 1.0 / 0.0; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND FALSE !(ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0))) [L85] COND FALSE !(hx > 0) [L88] EXPR atanhi_atan[3] [L88] EXPR atanlo_atan[3] [L88] return -atanhi_atan[3] - atanlo_atan[3]; [L144] double res = atan_double(x); [L146] COND TRUE res != pi_o_2 VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L147] reach_error() VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-11-03 03:42:15,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:18,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:18,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:18,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:18,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:18,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:18,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:18,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:18,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:18,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:18,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:18,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:18,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:18,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:18,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:18,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:18,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:18,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:18,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:18,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:18,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:18,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:18,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:18,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:18,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:18,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:18,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:18,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:18,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:18,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:18,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:18,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:18,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:18,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:18,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:18,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:18,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:18,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:18,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:18,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:18,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:18,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:42:18,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:18,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:18,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:18,474 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:18,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:18,474 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:18,475 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:18,475 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:18,476 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:18,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:18,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:42:18,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:42:18,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:18,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:18,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:18,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:18,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:42:18,480 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:42:18,480 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:42:18,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:42:18,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:18,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:18,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:18,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:18,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:42:18,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:18,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:18,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:18,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:18,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:18,483 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:42:18,483 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:42:18,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:18,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:18,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:18,484 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_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94c7028b230390dc4abdbced13b8b776e14e782aa364d41009dee4258cbf27c9 [2021-11-03 03:42:18,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:18,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:18,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:18,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:18,867 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:18,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-03 03:42:18,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/a9f4e57c7/30953767085b406fb5cc22e324c5feaf/FLAG973c2e4bb [2021-11-03 03:42:19,561 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:19,561 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c [2021-11-03 03:42:19,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/a9f4e57c7/30953767085b406fb5cc22e324c5feaf/FLAG973c2e4bb [2021-11-03 03:42:19,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/data/a9f4e57c7/30953767085b406fb5cc22e324c5feaf [2021-11-03 03:42:19,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:19,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:19,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:19,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:19,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:19,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:19" (1/1) ... [2021-11-03 03:42:19,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7b89de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:19, skipping insertion in model container [2021-11-03 03:42:19,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:19" (1/1) ... [2021-11-03 03:42:19,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:20,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:20,237 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_3b1f419b-577a-46e8-b0ef-c6e3c4396240/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-03 03:42:20,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:20,267 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:42:20,333 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_3b1f419b-577a-46e8-b0ef-c6e3c4396240/sv-benchmarks/c/float-newlib/double_req_bl_0621a.c[3711,3724] [2021-11-03 03:42:20,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:20,370 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:42:20,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20 WrapperNode [2021-11-03 03:42:20,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:20,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:20,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:42:20,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:42:20,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:20,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:42:20,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:42:20,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:42:20,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:42:20,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:42:20,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:42:20,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:42:20,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (1/1) ... [2021-11-03 03:42:20,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:20,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:20,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:42:20,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:42:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-03 03:42:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-03 03:42:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:42:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:42:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-03 03:42:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:42:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:42:20,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:42:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:42:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:42:37,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:42:37,695 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-03 03:42:37,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:37 BoogieIcfgContainer [2021-11-03 03:42:37,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:42:37,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:42:37,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:42:37,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:42:37,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:19" (1/3) ... [2021-11-03 03:42:37,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46dfe5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:37, skipping insertion in model container [2021-11-03 03:42:37,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:20" (2/3) ... [2021-11-03 03:42:37,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46dfe5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:37, skipping insertion in model container [2021-11-03 03:42:37,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:37" (3/3) ... [2021-11-03 03:42:37,708 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621a.c [2021-11-03 03:42:37,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:42:37,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:42:37,768 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:42:37,774 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:42:37,775 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:42:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 03:42:37,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:37,795 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:37,796 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1035664421, now seen corresponding path program 1 times [2021-11-03 03:42:37,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:37,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22268439] [2021-11-03 03:42:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:37,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:37,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:37,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:37,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:42:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:38,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:42:38,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:38,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:38,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:38,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22268439] [2021-11-03 03:42:38,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22268439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:38,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:38,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:42:38,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358110571] [2021-11-03 03:42:38,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:42:38,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:42:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:42:38,626 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:38,650 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-11-03 03:42:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:42:38,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 03:42:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:38,661 INFO L225 Difference]: With dead ends: 66 [2021-11-03 03:42:38,662 INFO L226 Difference]: Without dead ends: 31 [2021-11-03 03:42:38,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:42:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-03 03:42:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-03 03:42:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-03 03:42:38,707 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-03 03:42:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:38,708 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-03 03:42:38,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-03 03:42:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:42:38,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:38,710 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:38,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 03:42:38,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:38,914 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1843594333, now seen corresponding path program 1 times [2021-11-03 03:42:38,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:38,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852134157] [2021-11-03 03:42:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:38,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:38,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:38,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:42:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:39,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:42:39,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:39,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-03 03:42:42,478 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:42:42,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 70 [2021-11-03 03:42:42,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2021-11-03 03:42:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:44,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:42:47,445 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:42:47,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 70 [2021-11-03 03:42:47,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:42:47,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 72 [2021-11-03 03:42:47,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-03 03:42:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:42:49,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:42:49,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852134157] [2021-11-03 03:42:49,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852134157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:42:49,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:42:49,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 03:42:49,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639853807] [2021-11-03 03:42:49,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:42:49,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:42:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:42:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:42:49,884 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2021-11-03 03:42:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:42:51,371 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-11-03 03:42:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:42:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) Word has length 12 [2021-11-03 03:42:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:42:51,381 INFO L225 Difference]: With dead ends: 35 [2021-11-03 03:42:51,381 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 03:42:51,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:42:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 03:42:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 03:42:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:42:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-11-03 03:42:51,387 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 12 [2021-11-03 03:42:51,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:42:51,388 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-11-03 03:42:51,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2021-11-03 03:42:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-11-03 03:42:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:42:51,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:51,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:42:51,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 03:42:51,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:42:51,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:42:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1317358715, now seen corresponding path program 1 times [2021-11-03 03:42:51,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:42:51,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31755075] [2021-11-03 03:42:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:51,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:42:51,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:42:51,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:42:51,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b1f419b-577a-46e8-b0ef-c6e3c4396240/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:42:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:42:52,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 03:42:52,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:42:54,897 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-11-03 03:42:54,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 295 treesize of output 330 [2021-11-03 03:43:38,988 INFO L354 Elim1Store]: treesize reduction 293, result has 16.3 percent of original size [2021-11-03 03:43:38,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 237 treesize of output 276 [2021-11-03 03:43:39,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:43:39,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:43:39,536 INFO L354 Elim1Store]: treesize reduction 93, result has 8.8 percent of original size [2021-11-03 03:43:39,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 262 treesize of output 277 [2021-11-03 03:45:00,901 INFO L354 Elim1Store]: treesize reduction 166, result has 40.9 percent of original size [2021-11-03 03:45:00,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 301 treesize of output 397 [2021-11-03 03:45:01,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:45:01,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:45:02,143 INFO L354 Elim1Store]: treesize reduction 146, result has 18.0 percent of original size [2021-11-03 03:45:02,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 383 treesize of output 412 [2021-11-03 03:46:28,351 WARN L207 SmtUtils]: Spent 15.09 s on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2021-11-03 03:46:41,777 WARN L207 SmtUtils]: Spent 8.29 s on a formula simplification. DAG size of input: 114 DAG size of output: 86 [2021-11-03 03:46:41,779 INFO L354 Elim1Store]: treesize reduction 96, result has 68.5 percent of original size [2021-11-03 03:46:41,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 283 treesize of output 389