./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/sine_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash deb2961dfdf64db660101843bba8382b9335928497cfb099bb99119271c12cd2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:03:57,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:03:57,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:03:57,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:03:57,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:03:57,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:03:57,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:03:57,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:03:57,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:03:57,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:03:57,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:03:57,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:03:57,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:03:57,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:03:57,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:03:57,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:03:57,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:03:57,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:03:57,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:03:57,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:03:57,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:03:57,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:03:57,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:03:57,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:03:57,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:03:57,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:03:57,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:03:57,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:03:57,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:03:57,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:03:57,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:03:57,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:03:57,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:03:57,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:03:57,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:03:57,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:03:57,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:03:57,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:03:57,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:03:57,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:03:57,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:03:57,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:03:57,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:03:57,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:03:57,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:03:57,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:03:57,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:03:57,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:03:57,372 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:03:57,372 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:03:57,372 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:03:57,373 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:03:57,373 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:03:57,373 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:03:57,373 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:03:57,373 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:03:57,374 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:03:57,374 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:03:57,374 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:03:57,374 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:03:57,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:03:57,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:03:57,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:03:57,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:03:57,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:03:57,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:03:57,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:03:57,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:03:57,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:03:57,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:03:57,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:03:57,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:03:57,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:03:57,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:03:57,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:03:57,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:03:57,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:03:57,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:03:57,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:03:57,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:03:57,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:03:57,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:03:57,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:03:57,380 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_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deb2961dfdf64db660101843bba8382b9335928497cfb099bb99119271c12cd2 [2021-11-21 01:03:57,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:03:57,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:03:57,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:03:57,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:03:57,709 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:03:57,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cdfpl/sine_8.i [2021-11-21 01:03:57,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/3494a99b5/74318fe0153947629dc0562c3b2e7085/FLAGc5958f800 [2021-11-21 01:03:58,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:03:58,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/sv-benchmarks/c/floats-cdfpl/sine_8.i [2021-11-21 01:03:58,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/3494a99b5/74318fe0153947629dc0562c3b2e7085/FLAGc5958f800 [2021-11-21 01:03:58,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/3494a99b5/74318fe0153947629dc0562c3b2e7085 [2021-11-21 01:03:58,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:03:58,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:03:58,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:03:58,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:03:58,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:03:58,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:58,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733bab3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58, skipping insertion in model container [2021-11-21 01:03:58,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:58,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:03:58,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:03:58,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/sv-benchmarks/c/floats-cdfpl/sine_8.i[1641,1654] [2021-11-21 01:03:58,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:03:58,945 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:03:58,960 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/sv-benchmarks/c/floats-cdfpl/sine_8.i[1641,1654] [2021-11-21 01:03:58,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:03:58,974 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:03:58,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58 WrapperNode [2021-11-21 01:03:58,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:03:58,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:03:58,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:03:58,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:03:58,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:58,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,008 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2021-11-21 01:03:59,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:03:59,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:03:59,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:03:59,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:03:59,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:03:59,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:03:59,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:03:59,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:03:59,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (1/1) ... [2021-11-21 01:03:59,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:03:59,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:03:59,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:03:59,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:03:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:03:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:03:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:03:59,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:03:59,171 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:03:59,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:03:59,287 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:03:59,341 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:03:59,342 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:03:59,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:03:59 BoogieIcfgContainer [2021-11-21 01:03:59,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:03:59,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:03:59,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:03:59,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:03:59,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:03:58" (1/3) ... [2021-11-21 01:03:59,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446babf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:03:59, skipping insertion in model container [2021-11-21 01:03:59,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:03:58" (2/3) ... [2021-11-21 01:03:59,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446babf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:03:59, skipping insertion in model container [2021-11-21 01:03:59,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:03:59" (3/3) ... [2021-11-21 01:03:59,352 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_8.i [2021-11-21 01:03:59,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:03:59,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:03:59,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:03:59,417 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 [2021-11-21 01:03:59,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:03:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:03:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:03:59,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:59,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:03:59,438 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:03:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-21 01:03:59,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:59,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066554954] [2021-11-21 01:03:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:59,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:03:59,584 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:03:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:03:59,635 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:03:59,637 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:03:59,638 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:03:59,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:03:59,646 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:03:59,650 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:03:59,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:03:59 BoogieIcfgContainer [2021-11-21 01:03:59,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:03:59,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:03:59,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:03:59,687 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:03:59,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:03:59" (3/4) ... [2021-11-21 01:03:59,692 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:03:59,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:03:59,693 INFO L158 Benchmark]: Toolchain (without parser) took 1022.12ms. Allocated memory is still 136.3MB. Free memory was 95.2MB in the beginning and 84.9MB in the end (delta: 10.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-21 01:03:59,695 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory was 111.4MB in the beginning and 111.3MB in the end (delta: 75.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:03:59,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.14ms. Allocated memory is still 136.3MB. Free memory was 95.0MB in the beginning and 109.7MB in the end (delta: -14.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:03:59,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.08ms. Allocated memory is still 136.3MB. Free memory was 109.7MB in the beginning and 108.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:03:59,698 INFO L158 Benchmark]: Boogie Preprocessor took 18.25ms. Allocated memory is still 136.3MB. Free memory was 108.4MB in the beginning and 107.6MB in the end (delta: 781.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:03:59,704 INFO L158 Benchmark]: RCFGBuilder took 316.29ms. Allocated memory is still 136.3MB. Free memory was 107.1MB in the beginning and 97.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:03:59,705 INFO L158 Benchmark]: TraceAbstraction took 335.71ms. Allocated memory is still 136.3MB. Free memory was 97.5MB in the beginning and 85.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:03:59,707 INFO L158 Benchmark]: Witness Printer took 6.60ms. Allocated memory is still 136.3MB. Free memory was 85.3MB in the beginning and 84.9MB in the end (delta: 426.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:03:59,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 136.3MB. Free memory was 111.4MB in the beginning and 111.3MB in the end (delta: 75.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.14ms. Allocated memory is still 136.3MB. Free memory was 95.0MB in the beginning and 109.7MB in the end (delta: -14.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.08ms. Allocated memory is still 136.3MB. Free memory was 109.7MB in the beginning and 108.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.25ms. Allocated memory is still 136.3MB. Free memory was 108.4MB in the beginning and 107.6MB in the end (delta: 781.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 316.29ms. Allocated memory is still 136.3MB. Free memory was 107.1MB in the beginning and 97.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 335.71ms. Allocated memory is still 136.3MB. Free memory was 97.5MB in the beginning and 85.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.60ms. Allocated memory is still 136.3MB. Free memory was 85.3MB in the beginning and 84.9MB in the end (delta: 426.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 37]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 36, overapproximation of someBinaryArithmeticFLOAToperation at line 34. Possible FailurePath: [L29] float IN = __VERIFIER_nondet_float(); [L30] CALL assume_abort_if_not(IN > -1.57079632679f && IN < 1.57079632679f) [L24] COND FALSE !(!cond) [L30] RET assume_abort_if_not(IN > -1.57079632679f && IN < 1.57079632679f) [L32] float x = IN; [L34] float result = x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [IN=49, x=49] [L36] COND TRUE !(result <= 2.0f && result >= -2.0f) VAL [IN=49, x=49] [L37] reach_error() VAL [IN=49, x=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:03:59,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/sine_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash deb2961dfdf64db660101843bba8382b9335928497cfb099bb99119271c12cd2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:04:02,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:04:02,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:04:02,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:04:02,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:04:02,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:04:02,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:04:02,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:04:02,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:04:02,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:04:02,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:04:02,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:04:02,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:04:02,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:04:02,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:04:02,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:04:02,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:04:02,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:04:02,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:04:02,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:04:02,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:04:02,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:04:02,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:04:02,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:04:02,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:04:02,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:04:02,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:04:02,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:04:02,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:04:02,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:04:02,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:04:02,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:04:02,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:04:02,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:04:02,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:04:02,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:04:02,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:04:02,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:04:02,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:04:02,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:04:02,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:04:02,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:04:02,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:04:02,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:04:02,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:04:02,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:04:02,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:04:02,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:04:02,584 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:04:02,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:04:02,586 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:04:02,586 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:04:02,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:04:02,587 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:04:02,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:04:02,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:04:02,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:04:02,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:04:02,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:04:02,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:04:02,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:04:02,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:04:02,591 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:04:02,591 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:04:02,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:04:02,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:04:02,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:04:02,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:04:02,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:04:02,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:04:02,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:04:02,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:04:02,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:04:02,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:04:02,594 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:04:02,594 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:04:02,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:04:02,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:04:02,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:04:02,595 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_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deb2961dfdf64db660101843bba8382b9335928497cfb099bb99119271c12cd2 [2021-11-21 01:04:02,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:04:03,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:04:03,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:04:03,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:04:03,022 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:04:03,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/floats-cdfpl/sine_8.i [2021-11-21 01:04:03,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/450deea2c/747124d4dac34e608eb884bf419af804/FLAG489169c5d [2021-11-21 01:04:03,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:04:03,731 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/sv-benchmarks/c/floats-cdfpl/sine_8.i [2021-11-21 01:04:03,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/450deea2c/747124d4dac34e608eb884bf419af804/FLAG489169c5d [2021-11-21 01:04:04,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/data/450deea2c/747124d4dac34e608eb884bf419af804 [2021-11-21 01:04:04,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:04:04,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:04:04,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:04:04,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:04:04,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:04:04,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7117e46f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04, skipping insertion in model container [2021-11-21 01:04:04,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:04:04,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:04:04,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/sv-benchmarks/c/floats-cdfpl/sine_8.i[1641,1654] [2021-11-21 01:04:04,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:04:04,353 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:04:04,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/sv-benchmarks/c/floats-cdfpl/sine_8.i[1641,1654] [2021-11-21 01:04:04,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:04:04,430 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:04:04,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04 WrapperNode [2021-11-21 01:04:04,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:04:04,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:04:04,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:04:04,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:04:04,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,471 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-11-21 01:04:04,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:04:04,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:04:04,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:04:04,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:04:04,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:04:04,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:04:04,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:04:04,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:04:04,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (1/1) ... [2021-11-21 01:04:04,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:04:04,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:04:04,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:04:04,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:04:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:04:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:04:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:04:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:04:04,704 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:04:04,705 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:04:07,104 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:04:07,110 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:04:07,110 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:04:07,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:04:07 BoogieIcfgContainer [2021-11-21 01:04:07,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:04:07,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:04:07,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:04:07,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:04:07,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:04:04" (1/3) ... [2021-11-21 01:04:07,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e9ee74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:04:07, skipping insertion in model container [2021-11-21 01:04:07,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:04:04" (2/3) ... [2021-11-21 01:04:07,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e9ee74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:04:07, skipping insertion in model container [2021-11-21 01:04:07,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:04:07" (3/3) ... [2021-11-21 01:04:07,118 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_8.i [2021-11-21 01:04:07,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:04:07,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:04:07,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:04:07,216 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 [2021-11-21 01:04:07,216 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:04:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:04:07,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:07,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:04:07,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:04:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-21 01:04:07,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:04:07,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107038266] [2021-11-21 01:04:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:07,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:04:07,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:04:07,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:04:07,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:04:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:08,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:04:08,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:04:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:04:08,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:04:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:04:08,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:04:08,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107038266] [2021-11-21 01:04:08,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107038266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:08,273 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:08,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:04:08,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122651923] [2021-11-21 01:04:08,277 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:08,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:04:08,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:04:08,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:04:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:04:08,316 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:08,331 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-21 01:04:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:04:08,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:04:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:08,345 INFO L225 Difference]: With dead ends: 19 [2021-11-21 01:04:08,346 INFO L226 Difference]: Without dead ends: 7 [2021-11-21 01:04:08,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:04:08,353 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:08,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:04:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-21 01:04:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-21 01:04:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-21 01:04:08,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-21 01:04:08,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:08,388 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-21 01:04:08,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:04:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-21 01:04:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:04:08,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:08,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:04:08,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:04:08,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:04:08,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:04:08,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-21 01:04:08,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:04:08,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033737155] [2021-11-21 01:04:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:08,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:04:08,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:04:08,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:04:08,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6f07fa-e262-4a0d-b81f-dbc1c7cc543c/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process