./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE --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 117e227a1f8c7afcef46e8b69f6c9cb4b1111b56a5f7f9c1580e1601f48f85f4 .................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE --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 117e227a1f8c7afcef46e8b69f6c9cb4b1111b56a5f7f9c1580e1601f48f85f4 ..................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:57:34,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:57:35,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:57:35,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:57:35,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:57:35,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:57:35,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:57:35,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:57:35,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:57:35,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:57:35,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:57:35,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:57:35,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:57:35,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:57:35,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:57:35,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:57:35,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:57:35,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:57:35,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:57:35,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:57:35,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:57:35,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:57:35,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:57:35,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:57:35,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:57:35,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:57:35,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:57:35,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:57:35,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:57:35,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:57:35,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:57:35,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:57:35,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:57:35,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:57:35,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:57:35,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:57:35,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:57:35,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:57:35,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:57:35,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:57:35,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:57:35,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:57:35,107 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:57:35,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:57:35,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:57:35,113 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:57:35,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:57:35,114 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:57:35,115 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:57:35,115 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:57:35,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:57:35,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:57:35,120 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:57:35,120 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:57:35,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:57:35,121 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:57:35,121 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:57:35,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:57:35,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:57:35,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:57:35,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:57:35,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:57:35,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:57:35,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:57:35,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:57:35,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:57:35,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:57:35,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:57:35,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:57:35,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:57:35,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:57:35,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:57:35,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:35,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:57:35,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:57:35,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:57:35,130 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:57:35,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:57:35,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:57:35,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:57:35,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:57:35,131 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_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 117e227a1f8c7afcef46e8b69f6c9cb4b1111b56a5f7f9c1580e1601f48f85f4 [2021-10-24 10:57:35,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:57:35,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:57:35,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:57:35,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:57:35,445 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:57:35,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-24 10:57:35,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/b17f84cdc/79da8cf9d98940e3974eb86b76f8f3c7/FLAGaaf506040 [2021-10-24 10:57:36,110 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:57:36,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-24 10:57:36,124 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/b17f84cdc/79da8cf9d98940e3974eb86b76f8f3c7/FLAGaaf506040 [2021-10-24 10:57:36,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/b17f84cdc/79da8cf9d98940e3974eb86b76f8f3c7 [2021-10-24 10:57:36,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:57:36,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:57:36,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:36,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:57:36,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:57:36,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dd5fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36, skipping insertion in model container [2021-10-24 10:57:36,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:57:36,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:57:36,818 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_2a658f5b-3635-48d7-ac94-5ac14b21387f/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-24 10:57:36,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:36,837 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:57:36,875 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_2a658f5b-3635-48d7-ac94-5ac14b21387f/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-24 10:57:36,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:36,900 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:57:36,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36 WrapperNode [2021-10-24 10:57:36,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:36,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:36,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:57:36,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:57:36,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:36,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:57:36,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:57:36,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:57:36,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:36,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:37,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:37,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:37,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:57:37,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:57:37,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:57:37,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:57:37,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (1/1) ... [2021-10-24 10:57:37,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:37,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:57:37,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:57:37,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:57:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:57:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:57:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:57:37,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:57:37,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:57:37,460 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-24 10:57:37,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:37 BoogieIcfgContainer [2021-10-24 10:57:37,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:57:37,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:57:37,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:57:37,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:57:37,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:57:36" (1/3) ... [2021-10-24 10:57:37,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181b9e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:37, skipping insertion in model container [2021-10-24 10:57:37,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:36" (2/3) ... [2021-10-24 10:57:37,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181b9e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:37, skipping insertion in model container [2021-10-24 10:57:37,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:37" (3/3) ... [2021-10-24 10:57:37,474 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-10-24 10:57:37,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:57:37,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:57:37,540 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:57:37,548 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 [2021-10-24 10:57:37,549 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:57:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:57:37,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:37,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:57:37,573 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:37,580 INFO L82 PathProgramCache]: Analyzing trace with hash 67911, now seen corresponding path program 1 times [2021-10-24 10:57:37,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:57:37,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272647644] [2021-10-24 10:57:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:37,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:57:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:57:37,744 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:57:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:57:37,834 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:57:37,836 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:57:37,838 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:57:37,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:57:37,849 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:57:37,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:57:37 BoogieIcfgContainer [2021-10-24 10:57:37,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:57:37,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:57:37,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:57:37,872 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:57:37,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:37" (3/4) ... [2021-10-24 10:57:37,877 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:57:37,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:57:37,880 INFO L168 Benchmark]: Toolchain (without parser) took 1410.72 ms. Allocated memory is still 104.9 MB. Free memory was 72.8 MB in the beginning and 51.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:37,881 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 104.9 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:57:37,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.64 ms. Allocated memory is still 104.9 MB. Free memory was 72.4 MB in the beginning and 79.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:37,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.50 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 77.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:57:37,884 INFO L168 Benchmark]: Boogie Preprocessor took 54.10 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 76.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:37,885 INFO L168 Benchmark]: RCFGBuilder took 447.16 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 64.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:37,886 INFO L168 Benchmark]: TraceAbstraction took 404.70 ms. Allocated memory is still 104.9 MB. Free memory was 64.2 MB in the beginning and 51.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:57:37,887 INFO L168 Benchmark]: Witness Printer took 5.84 ms. Allocated memory is still 104.9 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:57:37,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 104.9 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 425.64 ms. Allocated memory is still 104.9 MB. Free memory was 72.4 MB in the beginning and 79.2 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.50 ms. Allocated memory is still 104.9 MB. Free memory was 79.2 MB in the beginning and 77.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.10 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 76.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 447.16 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 64.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 404.70 ms. Allocated memory is still 104.9 MB. Free memory was 64.2 MB in the beginning and 51.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.84 ms. Allocated memory is still 104.9 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: 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 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 310.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.3ms SsaConstructionTime, 67.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:57:37,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:57:40,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:57:40,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:57:40,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:57:40,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:57:40,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:57:40,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:57:40,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:57:40,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:57:40,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:57:40,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:57:40,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:57:40,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:57:40,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:57:40,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:57:40,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:57:40,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:57:40,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:57:40,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:57:41,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:57:41,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:57:41,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:57:41,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:57:41,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:57:41,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:57:41,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:57:41,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:57:41,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:57:41,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:57:41,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:57:41,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:57:41,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:57:41,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:57:41,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:57:41,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:57:41,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:57:41,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:57:41,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:57:41,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:57:41,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:57:41,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:57:41,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:57:41,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:57:41,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:57:41,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:57:41,084 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:57:41,084 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:57:41,084 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:57:41,084 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:57:41,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:57:41,085 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:57:41,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:57:41,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:57:41,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:57:41,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:57:41,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:57:41,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:57:41,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:57:41,087 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:57:41,087 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:57:41,088 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:57:41,088 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:57:41,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:57:41,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:57:41,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:57:41,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:57:41,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:57:41,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:57:41,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:41,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:57:41,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:57:41,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:57:41,090 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:57:41,090 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:57:41,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:57:41,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:57:41,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:57:41,091 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_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 117e227a1f8c7afcef46e8b69f6c9cb4b1111b56a5f7f9c1580e1601f48f85f4 [2021-10-24 10:57:41,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:57:41,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:57:41,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:57:41,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:57:41,556 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:57:41,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-24 10:57:41,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/5a8a5f76c/a63aeaf3a4874b6c86ebac9ac573e6fe/FLAG58378de62 [2021-10-24 10:57:42,278 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:57:42,279 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-24 10:57:42,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/5a8a5f76c/a63aeaf3a4874b6c86ebac9ac573e6fe/FLAG58378de62 [2021-10-24 10:57:42,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/data/5a8a5f76c/a63aeaf3a4874b6c86ebac9ac573e6fe [2021-10-24 10:57:42,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:57:42,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:57:42,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:42,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:57:42,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:57:42,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:42" (1/1) ... [2021-10-24 10:57:42,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af63241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:42, skipping insertion in model container [2021-10-24 10:57:42,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:57:42" (1/1) ... [2021-10-24 10:57:42,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:57:42,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:57:43,011 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_2a658f5b-3635-48d7-ac94-5ac14b21387f/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-24 10:57:43,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:43,043 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:57:43,087 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_2a658f5b-3635-48d7-ac94-5ac14b21387f/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-24 10:57:43,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:57:43,132 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:57:43,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43 WrapperNode [2021-10-24 10:57:43,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:57:43,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:43,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:57:43,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:57:43,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:57:43,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:57:43,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:57:43,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:57:43,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:57:43,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:57:43,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:57:43,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:57:43,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (1/1) ... [2021-10-24 10:57:43,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:57:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:57:43,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:57:43,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:57:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:57:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:57:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:57:43,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:57:54,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:57:54,699 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-24 10:57:54,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:54 BoogieIcfgContainer [2021-10-24 10:57:54,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:57:54,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:57:54,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:57:54,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:57:54,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:57:42" (1/3) ... [2021-10-24 10:57:54,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2373b69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:54, skipping insertion in model container [2021-10-24 10:57:54,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:57:43" (2/3) ... [2021-10-24 10:57:54,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2373b69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:57:54, skipping insertion in model container [2021-10-24 10:57:54,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:54" (3/3) ... [2021-10-24 10:57:54,713 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-10-24 10:57:54,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:57:54,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:57:54,792 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:57:54,800 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 [2021-10-24 10:57:54,800 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:57:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:57:54,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:54,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:54,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-10-24 10:57:54,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:54,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700342777] [2021-10-24 10:57:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:54,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:54,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:54,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:54,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:57:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:57:57,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:57:57,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:57:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:57,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:57:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:57:57,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:57:57,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700342777] [2021-10-24 10:57:57,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700342777] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:57:57,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:57:57,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:57:57,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298709747] [2021-10-24 10:57:57,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:57:57,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:57:57,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:57:58,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:57:58,002 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 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) [2021-10-24 10:57:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:57:58,016 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-24 10:57:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:57:58,018 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 [2021-10-24 10:57:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:57:58,026 INFO L225 Difference]: With dead ends: 27 [2021-10-24 10:57:58,027 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 10:57:58,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:57:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 10:57:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 10:57:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:57:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-24 10:57:58,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-10-24 10:57:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:57:58,064 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-24 10:57:58,064 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) [2021-10-24 10:57:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-24 10:57:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:57:58,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:57:58,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:57:58,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:57:58,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:57:58,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:57:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:57:58,290 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-10-24 10:57:58,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:57:58,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318923189] [2021-10-24 10:57:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:57:58,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:57:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:57:58,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:57:58,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:58:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:58:25,955 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:02:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:02:32,941 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 11:02:32,941 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:02:32,943 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:02:33,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:02:33,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:02:33,150 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:02:33,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:02:33 BoogieIcfgContainer [2021-10-24 11:02:33,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:02:33,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:02:33,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:02:33,180 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:02:33,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:57:54" (3/4) ... [2021-10-24 11:02:33,182 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 11:02:33,220 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:02:33,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:02:33,222 INFO L168 Benchmark]: Toolchain (without parser) took 290573.91 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 40.6 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:02:33,223 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:02:33,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.08 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 27.4 MB in the end (delta: -714.3 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:33,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.85 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 25.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:33,225 INFO L168 Benchmark]: Boogie Preprocessor took 65.65 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 24.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:33,226 INFO L168 Benchmark]: RCFGBuilder took 11413.49 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 36.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:33,227 INFO L168 Benchmark]: TraceAbstraction took 278474.41 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 42.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:33,227 INFO L168 Benchmark]: Witness Printer took 41.17 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 40.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:02:33,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 480.08 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 27.4 MB in the end (delta: -714.3 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.85 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 25.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.65 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 24.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11413.49 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 36.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 278474.41 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 42.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 41.17 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 40.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 278359.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.8ms, AutomataDifference: 44.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.1ms SsaConstructionTime, 30270.2ms SatisfiabilityAnalysisTime, 398.1ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 11:02:33,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a658f5b-3635-48d7-ac94-5ac14b21387f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...