./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_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_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/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_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/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_dc56ecd2-9110-4c27-b6e1-72795639a955/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 c8b19beffe54ff107b22c50c10234803c2acdb2c3c7e9510a6cfde8703be3d4f ....................................................................................................................................................................................................................................................... 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_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/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_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/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_dc56ecd2-9110-4c27-b6e1-72795639a955/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 c8b19beffe54ff107b22c50c10234803c2acdb2c3c7e9510a6cfde8703be3d4f ........................................................................................................................................................................................................................................................................................................ 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 10:04:36,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:04:36,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:04:36,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:04:36,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:04:36,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:04:36,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:04:36,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:04:36,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:04:36,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:04:36,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:04:36,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:04:36,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:04:36,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:04:36,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:04:36,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:04:36,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:04:36,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:04:36,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:04:36,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:04:36,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:04:36,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:04:36,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:04:36,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:04:36,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:04:36,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:04:36,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:04:36,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:04:36,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:04:36,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:04:36,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:04:36,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:04:36,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:04:36,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:04:36,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:04:36,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:04:36,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:04:36,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:04:36,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:04:36,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:04:36,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:04:36,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:04:36,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:04:36,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:04:36,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:04:36,242 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:04:36,243 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:04:36,243 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:04:36,243 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:04:36,244 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:04:36,244 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:04:36,244 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:04:36,245 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:04:36,246 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:04:36,246 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:04:36,246 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:04:36,247 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:04:36,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:04:36,248 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:04:36,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:04:36,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:04:36,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:04:36,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:04:36,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:04:36,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:04:36,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:04:36,250 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:04:36,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:04:36,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:04:36,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:04:36,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:04:36,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:04:36,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:04:36,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:04:36,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:04:36,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:04:36,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:04:36,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:04:36,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:04:36,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:04:36,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:04:36,256 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_dc56ecd2-9110-4c27-b6e1-72795639a955/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b19beffe54ff107b22c50c10234803c2acdb2c3c7e9510a6cfde8703be3d4f [2021-10-24 10:04:36,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:04:36,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:04:36,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:04:36,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:04:36,682 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:04:36,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-24 10:04:36,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/51da09853/bfb1cbc5ef7c47529b340ef828262868/FLAG7a0a8403b [2021-10-24 10:04:37,399 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:04:37,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-24 10:04:37,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/51da09853/bfb1cbc5ef7c47529b340ef828262868/FLAG7a0a8403b [2021-10-24 10:04:37,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/51da09853/bfb1cbc5ef7c47529b340ef828262868 [2021-10-24 10:04:37,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:04:37,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:04:37,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:04:37,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:04:37,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:04:37,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:37" (1/1) ... [2021-10-24 10:04:37,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11734ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:37, skipping insertion in model container [2021-10-24 10:04:37,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:37" (1/1) ... [2021-10-24 10:04:37,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:04:37,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:04:38,011 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_dc56ecd2-9110-4c27-b6e1-72795639a955/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-24 10:04:38,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:04:38,024 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:04:38,050 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_dc56ecd2-9110-4c27-b6e1-72795639a955/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-24 10:04:38,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:04:38,066 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:04:38,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38 WrapperNode [2021-10-24 10:04:38,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:04:38,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:04:38,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:04:38,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:04:38,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:04:38,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:04:38,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:04:38,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:04:38,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:04:38,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:04:38,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:04:38,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:04:38,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (1/1) ... [2021-10-24 10:04:38,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:04:38,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:04:38,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:04:38,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:04:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:04:38,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:04:38,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:04:38,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:04:38,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:04:38,813 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 10:04:38,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:04:38 BoogieIcfgContainer [2021-10-24 10:04:38,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:04:38,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:04:38,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:04:38,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:04:38,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:04:37" (1/3) ... [2021-10-24 10:04:38,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e224ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:04:38, skipping insertion in model container [2021-10-24 10:04:38,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:38" (2/3) ... [2021-10-24 10:04:38,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e224ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:04:38, skipping insertion in model container [2021-10-24 10:04:38,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:04:38" (3/3) ... [2021-10-24 10:04:38,836 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-10-24 10:04:38,843 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:04:38,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:04:38,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:04:38,929 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 10:04:38,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:04:38,949 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 10:04:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:04:38,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:04:38,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:04:38,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:04:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:04:38,992 INFO L82 PathProgramCache]: Analyzing trace with hash 73805, now seen corresponding path program 1 times [2021-10-24 10:04:39,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:04:39,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743748084] [2021-10-24 10:04:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:04:39,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:04:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:04:39,142 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:04:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:04:39,193 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:04:39,196 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:04:39,197 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:04:39,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:04:39,208 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:04:39,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:04:39 BoogieIcfgContainer [2021-10-24 10:04:39,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:04:39,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:04:39,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:04:39,228 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:04:39,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:04:38" (3/4) ... [2021-10-24 10:04:39,232 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:04:39,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:04:39,235 INFO L168 Benchmark]: Toolchain (without parser) took 1517.62 ms. Allocated memory is still 83.9 MB. Free memory was 62.3 MB in the beginning and 52.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:04:39,236 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:04:39,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.50 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 60.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:04:39,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.24 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 58.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:04:39,239 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 83.9 MB. Free memory was 58.9 MB in the beginning and 57.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:04:39,240 INFO L168 Benchmark]: RCFGBuilder took 672.74 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 45.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:04:39,240 INFO L168 Benchmark]: TraceAbstraction took 401.58 ms. Allocated memory is still 83.9 MB. Free memory was 45.0 MB in the beginning and 53.0 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:04:39,241 INFO L168 Benchmark]: Witness Printer took 5.26 ms. Allocated memory is still 83.9 MB. Free memory was 53.0 MB in the beginning and 52.5 MB in the end (delta: 518.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:04:39,246 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 83.9 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.50 ms. Allocated memory is still 83.9 MB. Free memory was 62.1 MB in the beginning and 60.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.24 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 58.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 83.9 MB. Free memory was 58.9 MB in the beginning and 57.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 672.74 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 45.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 401.58 ms. Allocated memory is still 83.9 MB. Free memory was 45.0 MB in the beginning and 53.0 MB in the end (delta: -8.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.26 ms. Allocated memory is still 83.9 MB. Free memory was 53.0 MB in the beginning and 52.5 MB in the end (delta: 518.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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) [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; [L37] 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: 307.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 13.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.6ms, 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: 7.8ms SsaConstructionTime, 51.8ms 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 10:04:39,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/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 10:04:42,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:04:42,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:04:42,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:04:42,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:04:42,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:04:42,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:04:42,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:04:42,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:04:42,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:04:42,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:04:42,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:04:42,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:04:42,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:04:42,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:04:42,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:04:42,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:04:42,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:04:42,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:04:42,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:04:42,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:04:42,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:04:42,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:04:42,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:04:42,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:04:42,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:04:42,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:04:42,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:04:42,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:04:42,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:04:42,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:04:42,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:04:42,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:04:42,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:04:42,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:04:42,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:04:42,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:04:42,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:04:42,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:04:42,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:04:42,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:04:42,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:04:42,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:04:42,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:04:42,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:04:42,606 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:04:42,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:04:42,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:04:42,607 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:04:42,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:04:42,608 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:04:42,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:04:42,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:04:42,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:04:42,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:04:42,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:04:42,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:04:42,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:04:42,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:04:42,611 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:04:42,612 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:04:42,612 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:04:42,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:04:42,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:04:42,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:04:42,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:04:42,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:04:42,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:04:42,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:04:42,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:04:42,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:04:42,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:04:42,615 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:04:42,615 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:04:42,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:04:42,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:04:42,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:04:42,617 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_dc56ecd2-9110-4c27-b6e1-72795639a955/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b19beffe54ff107b22c50c10234803c2acdb2c3c7e9510a6cfde8703be3d4f [2021-10-24 10:04:43,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:04:43,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:04:43,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:04:43,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:04:43,176 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:04:43,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-24 10:04:43,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/ba64ef3a6/4f61cc0666a848d3ada21da551f2a4b5/FLAG73dc6ae9b [2021-10-24 10:04:43,995 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:04:43,996 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-24 10:04:44,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/ba64ef3a6/4f61cc0666a848d3ada21da551f2a4b5/FLAG73dc6ae9b [2021-10-24 10:04:44,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/data/ba64ef3a6/4f61cc0666a848d3ada21da551f2a4b5 [2021-10-24 10:04:44,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:04:44,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:04:44,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:04:44,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:04:44,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:04:44,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7668d0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44, skipping insertion in model container [2021-10-24 10:04:44,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:04:44,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:04:44,567 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_dc56ecd2-9110-4c27-b6e1-72795639a955/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-24 10:04:44,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:04:44,587 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:04:44,610 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_dc56ecd2-9110-4c27-b6e1-72795639a955/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-24 10:04:44,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:04:44,630 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:04:44,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44 WrapperNode [2021-10-24 10:04:44,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:04:44,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:04:44,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:04:44,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:04:44,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:04:44,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:04:44,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:04:44,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:04:44,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:04:44,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:04:44,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:04:44,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:04:44,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (1/1) ... [2021-10-24 10:04:44,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:04:44,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:04:44,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:04:44,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:04:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:04:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:04:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:04:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:05:01,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:05:01,170 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 10:05:01,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:05:01 BoogieIcfgContainer [2021-10-24 10:05:01,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:05:01,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:05:01,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:05:01,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:05:01,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:04:44" (1/3) ... [2021-10-24 10:05:01,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1262e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:05:01, skipping insertion in model container [2021-10-24 10:05:01,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:04:44" (2/3) ... [2021-10-24 10:05:01,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1262e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:05:01, skipping insertion in model container [2021-10-24 10:05:01,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:05:01" (3/3) ... [2021-10-24 10:05:01,182 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-10-24 10:05:01,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:05:01,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:05:01,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:05:01,253 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 10:05:01,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 10:05:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 10:05:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:05:01,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:05:01,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:05:01,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:05:01,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:05:01,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-10-24 10:05:01,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:05:01,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909245756] [2021-10-24 10:05:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:05:01,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:05:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:05:01,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:05:01,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:05:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:05:05,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:05:05,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:05:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:05:05,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:05:05,967 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 10:05:05,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:05:05,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909245756] [2021-10-24 10:05:05,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909245756] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:05:05,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:05:05,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:05:05,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126565413] [2021-10-24 10:05:05,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:05:05,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:05:05,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:05:05,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:05:05,999 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:05:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:05:06,016 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-24 10:05:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:05:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 10:05:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:05:06,028 INFO L225 Difference]: With dead ends: 31 [2021-10-24 10:05:06,028 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 10:05:06,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 10:05:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 10:05:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 10:05:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 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) [2021-10-24 10:05:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-24 10:05:06,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-10-24 10:05:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:05:06,069 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-24 10:05:06,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:05:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-24 10:05:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:05:06,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:05:06,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:05:06,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:05:06,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:05:06,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:05:06,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:05:06,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-10-24 10:05:06,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:05:06,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824604605] [2021-10-24 10:05:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:05:06,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:05:06,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:05:06,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:05:06,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:07:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:07:25,357 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:07:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:07:44,688 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:07:44,688 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:07:44,690 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:07:44,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:07:44,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:07:44,898 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:07:44,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:07:44 BoogieIcfgContainer [2021-10-24 10:07:44,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:07:44,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:07:44,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:07:44,927 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:07:44,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:05:01" (3/4) ... [2021-10-24 10:07:44,930 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:07:44,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:07:44,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:07:44,975 INFO L168 Benchmark]: Toolchain (without parser) took 180649.18 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 39.5 MB in the beginning and 43.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:44,976 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:07:44,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.07 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 28.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:44,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.59 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 41.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:44,978 INFO L168 Benchmark]: Boogie Preprocessor took 52.63 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 39.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:07:44,978 INFO L168 Benchmark]: RCFGBuilder took 16343.30 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 29.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:44,979 INFO L168 Benchmark]: TraceAbstraction took 163751.47 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 28.6 MB in the beginning and 45.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:44,980 INFO L168 Benchmark]: Witness Printer took 46.41 ms. Allocated memory is still 83.9 MB. Free memory was 45.4 MB in the beginning and 43.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:44,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 58.7 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.07 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 28.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.59 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 41.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.63 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 39.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 16343.30 ms. Allocated memory is still 58.7 MB. Free memory was 39.9 MB in the beginning and 29.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 163751.47 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 28.6 MB in the beginning and 45.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 46.41 ms. Allocated memory is still 83.9 MB. Free memory was 45.4 MB in the beginning and 43.3 MB in the end (delta: 2.1 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) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 163654.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 28.1ms, AutomataDifference: 51.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 19.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.1ms SsaConstructionTime, 143034.8ms SatisfiabilityAnalysisTime, 498.0ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 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 10:07:45,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc56ecd2-9110-4c27-b6e1-72795639a955/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...