./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:47,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:47,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:47,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:47,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:47,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:47,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:47,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:47,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:47,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:47,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:47,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:47,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:47,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:47,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:47,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:47,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:47,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:47,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:47,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:47,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:47,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:47,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:47,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:47,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:47,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:47,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:47,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:47,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:47,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:47,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:47,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:47,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:47,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:47,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:47,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:47,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:47,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:47,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:47,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:47,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:47,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:13:47,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:47,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:47,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:47,327 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:47,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:47,328 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:47,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:13:47,328 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:47,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:47,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:13:47,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:13:47,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:47,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:13:47,331 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:13:47,331 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:13:47,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:47,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:13:47,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:13:47,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:13:47,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:47,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:47,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:47,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:47,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:13:47,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:13:47,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:47,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:47,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:47,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:47,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:47,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:47,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:47,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:47,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:47,337 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:13:47,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:13:47,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:47,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:47,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:47,338 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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 [2021-11-03 04:13:47,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:47,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:47,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:47,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:47,668 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:47,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-03 04:13:47,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/4b016b90a/3915156f47d543aead6b18a622d87d1c/FLAG8210346c4 [2021-11-03 04:13:48,356 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:48,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-03 04:13:48,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/4b016b90a/3915156f47d543aead6b18a622d87d1c/FLAG8210346c4 [2021-11-03 04:13:48,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/4b016b90a/3915156f47d543aead6b18a622d87d1c [2021-11-03 04:13:48,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:48,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:48,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:48,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:48,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:48,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:48" (1/1) ... [2021-11-03 04:13:48,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b2efa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:48, skipping insertion in model container [2021-11-03 04:13:48,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:48" (1/1) ... [2021-11-03 04:13:48,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:48,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:48,966 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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-03 04:13:48,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:48,987 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:13:49,058 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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-03 04:13:49,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:49,077 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:13:49,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49 WrapperNode [2021-11-03 04:13:49,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:49,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:49,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:13:49,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:13:49,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:49,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:13:49,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:13:49,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:13:49,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:13:49,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:13:49,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:13:49,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:13:49,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (1/1) ... [2021-11-03 04:13:49,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:49,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:13:49,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:13:49,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:13:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:13:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:13:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 04:13:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:13:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 04:13:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:13:49,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:13:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:13:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-03 04:13:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:13:49,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:13:49,946 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-03 04:13:49,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:49 BoogieIcfgContainer [2021-11-03 04:13:49,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:13:49,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:13:49,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:13:49,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:13:49,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:13:48" (1/3) ... [2021-11-03 04:13:49,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0457f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:49, skipping insertion in model container [2021-11-03 04:13:49,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:49" (2/3) ... [2021-11-03 04:13:49,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0457f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:49, skipping insertion in model container [2021-11-03 04:13:49,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:49" (3/3) ... [2021-11-03 04:13:49,958 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621b.c [2021-11-03 04:13:49,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:13:49,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:13:50,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:13:50,022 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:13:50,022 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:13:50,037 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 04:13:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:13:50,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:50,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:50,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:13:50,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash 725631262, now seen corresponding path program 1 times [2021-11-03 04:13:50,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:13:50,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828807453] [2021-11-03 04:13:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:50,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:13:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:50,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:13:50,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828807453] [2021-11-03 04:13:50,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828807453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:50,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:50,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:13:50,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840559903] [2021-11-03 04:13:50,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:13:50,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:13:50,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:13:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:13:50,267 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 04:13:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:50,293 INFO L93 Difference]: Finished difference Result 47 states and 71 transitions. [2021-11-03 04:13:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:13:50,295 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 04:13:50,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:50,305 INFO L225 Difference]: With dead ends: 47 [2021-11-03 04:13:50,305 INFO L226 Difference]: Without dead ends: 22 [2021-11-03 04:13:50,309 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 04:13:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-03 04:13:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-03 04:13:50,342 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 04:13:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-03 04:13:50,344 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2021-11-03 04:13:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:50,345 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-03 04:13:50,345 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 04:13:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-03 04:13:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:13:50,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:50,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:50,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:13:50,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:13:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:50,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1997685412, now seen corresponding path program 1 times [2021-11-03 04:13:50,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:13:50,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787143285] [2021-11-03 04:13:50,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:50,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:13:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:13:50,451 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:13:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:13:50,608 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:13:50,612 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:13:50,615 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:13:50,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:13:50,623 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 04:13:50,626 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:13:50,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:13:50 BoogieIcfgContainer [2021-11-03 04:13:50,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:13:50,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:13:50,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:13:50,698 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:13:50,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:49" (3/4) ... [2021-11-03 04:13:50,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:13:50,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:13:50,705 INFO L168 Benchmark]: Toolchain (without parser) took 2000.13 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 62.9 MB in the beginning and 90.1 MB in the end (delta: -27.1 MB). Peak memory consumption was 831.4 kB. Max. memory is 16.1 GB. [2021-11-03 04:13:50,706 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:50,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.68 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 62.7 MB in the beginning and 99.3 MB in the end (delta: -36.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:50,710 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.57 ms. Allocated memory is still 125.8 MB. Free memory was 98.9 MB in the beginning and 96.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:50,716 INFO L168 Benchmark]: Boogie Preprocessor took 64.87 ms. Allocated memory is still 125.8 MB. Free memory was 96.8 MB in the beginning and 95.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:50,716 INFO L168 Benchmark]: RCFGBuilder took 748.75 ms. Allocated memory is still 125.8 MB. Free memory was 95.1 MB in the beginning and 74.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:50,717 INFO L168 Benchmark]: TraceAbstraction took 746.46 ms. Allocated memory is still 125.8 MB. Free memory was 74.1 MB in the beginning and 90.1 MB in the end (delta: -15.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:50,717 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 125.8 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:50,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.68 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 62.7 MB in the beginning and 99.3 MB in the end (delta: -36.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.57 ms. Allocated memory is still 125.8 MB. Free memory was 98.9 MB in the beginning and 96.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.87 ms. Allocated memory is still 125.8 MB. Free memory was 96.8 MB in the beginning and 95.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 748.75 ms. Allocated memory is still 125.8 MB. Free memory was 95.1 MB in the beginning and 74.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 746.46 ms. Allocated memory is still 125.8 MB. Free memory was 74.1 MB in the beginning and 90.1 MB in the end (delta: -15.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 125.8 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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 04:13:50,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:53,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:53,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:53,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:53,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:53,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:53,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:53,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:53,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:53,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:53,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:53,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:53,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:53,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:53,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:53,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:53,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:53,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:53,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:53,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:53,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:53,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:53,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:53,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:53,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:53,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:53,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:53,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:53,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:53,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:53,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:53,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:53,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:53,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:53,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:53,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:53,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:53,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:53,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:53,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:53,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:53,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:13:53,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:53,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:53,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:53,444 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:53,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:53,445 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:53,445 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:53,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:53,446 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:53,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:53,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:13:53,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:13:53,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:53,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:53,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:53,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:53,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:13:53,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:13:53,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:13:53,451 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:13:53,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:53,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:53,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:53,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:53,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:13:53,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:53,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:53,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:53,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:53,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:53,454 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:13:53,454 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:13:53,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:53,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:53,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:53,455 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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ead8f92d727e659a3a3e48f3e2a8079f3cda1172b703c6ea18213bf1971d913 [2021-11-03 04:13:53,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:53,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:53,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:53,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:53,883 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:53,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-03 04:13:53,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/d07a9257c/701c3ef5fd874da7abd9a3e825ed71a4/FLAGc2a08b767 [2021-11-03 04:13:54,565 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:54,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c [2021-11-03 04:13:54,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/d07a9257c/701c3ef5fd874da7abd9a3e825ed71a4/FLAGc2a08b767 [2021-11-03 04:13:54,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/data/d07a9257c/701c3ef5fd874da7abd9a3e825ed71a4 [2021-11-03 04:13:54,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:54,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:54,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:54,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:54,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:54,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:54" (1/1) ... [2021-11-03 04:13:54,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127e647b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:54, skipping insertion in model container [2021-11-03 04:13:54,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:54" (1/1) ... [2021-11-03 04:13:54,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:54,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:55,126 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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-03 04:13:55,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:55,144 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:13:55,245 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_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/sv-benchmarks/c/float-newlib/double_req_bl_0621b.c[3713,3726] [2021-11-03 04:13:55,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:55,281 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:13:55,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55 WrapperNode [2021-11-03 04:13:55,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:55,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:55,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:13:55,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:13:55,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:55,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:13:55,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:13:55,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:13:55,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:13:55,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:13:55,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:13:55,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:13:55,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (1/1) ... [2021-11-03 04:13:55,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:13:55,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:13:55,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:13:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-03 04:13:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-03 04:13:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:13:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:13:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-03 04:13:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:13:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:13:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:13:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:13:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:14:12,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:14:12,871 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-03 04:14:12,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:14:12 BoogieIcfgContainer [2021-11-03 04:14:12,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:14:12,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:14:12,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:14:12,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:14:12,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:13:54" (1/3) ... [2021-11-03 04:14:12,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c655bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:14:12, skipping insertion in model container [2021-11-03 04:14:12,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:55" (2/3) ... [2021-11-03 04:14:12,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c655bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:14:12, skipping insertion in model container [2021-11-03 04:14:12,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:14:12" (3/3) ... [2021-11-03 04:14:12,883 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0621b.c [2021-11-03 04:14:12,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:14:12,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:14:12,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:14:12,949 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:14:12,949 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:14:12,974 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 04:14:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:14:12,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:12,992 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:12,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:14:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:12,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1035664421, now seen corresponding path program 1 times [2021-11-03 04:14:13,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:13,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2913486] [2021-11-03 04:14:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:13,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:13,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:13,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:13,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:14:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:13,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:14:13,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:13,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:13,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:13,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2913486] [2021-11-03 04:14:13,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2913486] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:13,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:13,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:14:13,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989210770] [2021-11-03 04:14:13,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:14:13,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:14:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:14:13,882 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 04:14:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:13,899 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-11-03 04:14:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:14:13,900 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 04:14:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:13,909 INFO L225 Difference]: With dead ends: 66 [2021-11-03 04:14:13,909 INFO L226 Difference]: Without dead ends: 31 [2021-11-03 04:14:13,911 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 04:14:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-03 04:14:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-03 04:14:13,940 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 04:14:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-03 04:14:13,943 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-03 04:14:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:13,943 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-03 04:14:13,944 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 04:14:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-03 04:14:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:14:13,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:13,945 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:13,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:14,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:14,146 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:14:14,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:14,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1843594333, now seen corresponding path program 1 times [2021-11-03 04:14:14,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:14,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922115048] [2021-11-03 04:14:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:14,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:14,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:14,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:14,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:14:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:14,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:14:14,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:14,980 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 04:14:17,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:17,901 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 71 treesize of output 71 [2021-11-03 04:14:18,240 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 04:14:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:19,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:23,206 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:23,207 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 04:14:23,370 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:14:23,370 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 04:14:23,523 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 04:14:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:25,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:25,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922115048] [2021-11-03 04:14:25,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922115048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:25,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:25,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 04:14:25,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617728423] [2021-11-03 04:14:25,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:14:25,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:14:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:14:25,816 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 04:14:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:27,434 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-11-03 04:14:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:14:27,455 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 04:14:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:27,456 INFO L225 Difference]: With dead ends: 35 [2021-11-03 04:14:27,456 INFO L226 Difference]: Without dead ends: 14 [2021-11-03 04:14:27,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:14:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-03 04:14:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-03 04:14:27,460 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 04:14:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-11-03 04:14:27,461 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 12 [2021-11-03 04:14:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:27,461 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-11-03 04:14:27,461 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 04:14:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-11-03 04:14:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:14:27,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:27,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:27,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:27,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:27,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:14:27,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1317299133, now seen corresponding path program 1 times [2021-11-03 04:14:27,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:27,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129235638] [2021-11-03 04:14:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:27,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:27,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:27,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:27,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdc63a1b-d7be-4e0a-a3d1-ba11b9ac0250/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:14:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:28,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:14:28,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:31,377 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-11-03 04:14:31,377 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 04:15:18,464 INFO L354 Elim1Store]: treesize reduction 293, result has 16.3 percent of original size [2021-11-03 04:15:18,465 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 04:15:18,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:15:18,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:15:18,988 INFO L354 Elim1Store]: treesize reduction 93, result has 8.8 percent of original size [2021-11-03 04:15:18,989 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 04:16:44,423 INFO L354 Elim1Store]: treesize reduction 166, result has 40.9 percent of original size [2021-11-03 04:16:44,424 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 04:16:44,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:16:44,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:16:45,723 INFO L354 Elim1Store]: treesize reduction 146, result has 18.0 percent of original size [2021-11-03 04:16:45,724 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 04:18:16,316 WARN L207 SmtUtils]: Spent 15.16 s on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2021-11-03 04:18:30,732 WARN L207 SmtUtils]: Spent 9.00 s on a formula simplification. DAG size of input: 114 DAG size of output: 86 [2021-11-03 04:18:30,733 INFO L354 Elim1Store]: treesize reduction 96, result has 68.5 percent of original size [2021-11-03 04:18:30,734 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 284 treesize of output 390