./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan --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 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a ...................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan --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 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a ................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2020-12-09 19:26:33,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:26:33,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:26:33,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:26:33,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:26:33,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:26:33,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:26:33,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:26:33,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:26:33,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:26:33,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:26:33,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:26:33,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:26:33,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:26:33,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:26:33,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:26:33,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:26:33,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:26:33,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:26:33,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:26:33,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:26:33,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:26:33,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:26:33,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:26:33,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:26:33,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:26:33,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:26:33,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:26:33,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:26:33,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:26:33,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:26:33,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:26:33,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:26:33,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:26:33,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:26:33,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:26:33,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:26:33,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:26:33,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:26:33,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:26:33,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:26:33,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:26:33,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:26:33,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:26:33,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:26:33,324 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:26:33,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:26:33,324 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:26:33,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:26:33,325 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:26:33,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:26:33,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:26:33,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:26:33,325 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:26:33,326 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:26:33,326 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:26:33,326 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:26:33,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:26:33,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:26:33,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:26:33,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:26:33,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:26:33,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:26:33,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:26:33,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:26:33,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:26:33,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:26:33,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:26:33,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:26:33,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:26:33,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:26:33,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:26:33,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:26:33,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:26:33,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:26:33,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:26:33,330 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:26:33,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:26:33,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:26:33,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:26:33,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:26:33,330 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-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-12-09 19:26:33,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:26:33,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:26:33,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:26:33,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:26:33,543 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:26:33,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-12-09 19:26:33,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/862d5faf0/d4472804a2b14635a35d66be814590dd/FLAG8f78a8923 [2020-12-09 19:26:33,951 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:26:33,951 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-12-09 19:26:33,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/862d5faf0/d4472804a2b14635a35d66be814590dd/FLAG8f78a8923 [2020-12-09 19:26:33,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/862d5faf0/d4472804a2b14635a35d66be814590dd [2020-12-09 19:26:33,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:26:33,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:26:33,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:26:33,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:26:33,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:26:33,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:26:33" (1/1) ... [2020-12-09 19:26:33,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ea8853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:33, skipping insertion in model container [2020-12-09 19:26:33,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:26:33" (1/1) ... [2020-12-09 19:26:33,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:26:33,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:26:34,098 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2020-12-09 19:26:34,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:26:34,106 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:26:34,119 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2020-12-09 19:26:34,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:26:34,130 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:26:34,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34 WrapperNode [2020-12-09 19:26:34,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:26:34,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:26:34,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:26:34,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:26:34,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:26:34,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:26:34,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:26:34,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:26:34,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... [2020-12-09 19:26:34,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:26:34,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:26:34,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:26:34,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:26:34,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:26:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:26:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:26:34,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:26:34,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:26:34,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:26:34,450 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 19:26:34,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:34 BoogieIcfgContainer [2020-12-09 19:26:34,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:26:34,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:26:34,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:26:34,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:26:34,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:26:33" (1/3) ... [2020-12-09 19:26:34,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a0181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:26:34, skipping insertion in model container [2020-12-09 19:26:34,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:34" (2/3) ... [2020-12-09 19:26:34,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a0181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:26:34, skipping insertion in model container [2020-12-09 19:26:34,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:34" (3/3) ... [2020-12-09 19:26:34,458 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-12-09 19:26:34,467 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:26:34,469 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:26:34,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:26:34,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:26:34,493 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:26:34,493 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:26:34,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:26:34,493 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:26:34,493 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:26:34,494 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:26:34,494 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:26:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-09 19:26:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 19:26:34,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:26:34,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 19:26:34,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:26:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:26:34,511 INFO L82 PathProgramCache]: Analyzing trace with hash 73805, now seen corresponding path program 1 times [2020-12-09 19:26:34,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:26:34,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131365901] [2020-12-09 19:26:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:26:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:26:34,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:26:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:26:34,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:26:34,620 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:26:34,621 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:26:34,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:26:34,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:26:34 BoogieIcfgContainer [2020-12-09 19:26:34,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:26:34,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:26:34,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:26:34,636 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:26:34,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:34" (3/4) ... [2020-12-09 19:26:34,638 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:26:34,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:26:34,640 INFO L168 Benchmark]: Toolchain (without parser) took 670.24 ms. Allocated memory is still 115.3 MB. Free memory was 73.8 MB in the beginning and 68.2 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:34,640 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 115.3 MB. Free memory is still 90.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:26:34,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.46 ms. Allocated memory is still 115.3 MB. Free memory was 73.7 MB in the beginning and 63.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:34,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.93 ms. Allocated memory is still 115.3 MB. Free memory was 63.3 MB in the beginning and 94.0 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:34,642 INFO L168 Benchmark]: Boogie Preprocessor took 22.40 ms. Allocated memory is still 115.3 MB. Free memory was 94.0 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:26:34,643 INFO L168 Benchmark]: RCFGBuilder took 261.82 ms. Allocated memory is still 115.3 MB. Free memory was 92.8 MB in the beginning and 80.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:34,644 INFO L168 Benchmark]: TraceAbstraction took 181.94 ms. Allocated memory is still 115.3 MB. Free memory was 80.3 MB in the beginning and 68.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:34,644 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 115.3 MB. Free memory was 68.6 MB in the beginning and 68.2 MB in the end (delta: 460.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:26:34,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 115.3 MB. Free memory is still 90.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.46 ms. Allocated memory is still 115.3 MB. Free memory was 73.7 MB in the beginning and 63.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.93 ms. Allocated memory is still 115.3 MB. Free memory was 63.3 MB in the beginning and 94.0 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.40 ms. Allocated memory is still 115.3 MB. Free memory was 94.0 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 261.82 ms. Allocated memory is still 115.3 MB. Free memory was 92.8 MB in the beginning and 80.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 181.94 ms. Allocated memory is still 115.3 MB. Free memory was 80.3 MB in the beginning and 68.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.11 ms. Allocated memory is still 115.3 MB. Free memory was 68.6 MB in the beginning and 68.2 MB in the end (delta: 460.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:26:36,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:26:36,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:26:36,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:26:36,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:26:36,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:26:36,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:26:36,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:26:36,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:26:36,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:26:36,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:26:36,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:26:36,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:26:36,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:26:36,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:26:36,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:26:36,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:26:36,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:26:36,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:26:36,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:26:36,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:26:36,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:26:36,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:26:36,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:26:36,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:26:36,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:26:36,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:26:36,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:26:36,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:26:36,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:26:36,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:26:36,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:26:36,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:26:36,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:26:36,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:26:36,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:26:36,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:26:36,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:26:36,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:26:36,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:26:36,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:26:36,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:26:36,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:26:36,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:26:36,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:26:36,239 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:26:36,239 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:26:36,239 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:26:36,239 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:26:36,239 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:26:36,239 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:26:36,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:26:36,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:26:36,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:26:36,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:26:36,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:26:36,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:26:36,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:26:36,242 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:26:36,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:26:36,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:26:36,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:26:36,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:26:36,242 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-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-12-09 19:26:36,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:26:36,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:26:36,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:26:36,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:26:36,480 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:26:36,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-12-09 19:26:36,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/0fd650a56/32aa5d1832504e47a30037c2fe14f095/FLAGbcbcbec2b [2020-12-09 19:26:36,897 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:26:36,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-12-09 19:26:36,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/0fd650a56/32aa5d1832504e47a30037c2fe14f095/FLAGbcbcbec2b [2020-12-09 19:26:36,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/data/0fd650a56/32aa5d1832504e47a30037c2fe14f095 [2020-12-09 19:26:36,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:26:36,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:26:36,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:26:36,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:26:36,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:26:36,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:26:36" (1/1) ... [2020-12-09 19:26:36,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd042b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:36, skipping insertion in model container [2020-12-09 19:26:36,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:26:36" (1/1) ... [2020-12-09 19:26:36,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:26:36,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:26:37,045 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2020-12-09 19:26:37,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:26:37,056 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:26:37,070 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2020-12-09 19:26:37,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:26:37,082 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:26:37,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37 WrapperNode [2020-12-09 19:26:37,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:26:37,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:26:37,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:26:37,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:26:37,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:26:37,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:26:37,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:26:37,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:26:37,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... [2020-12-09 19:26:37,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:26:37,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:26:37,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:26:37,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:26:37,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:26:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:26:37,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:26:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:26:37,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:26:53,101 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:26:53,101 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 19:26:53,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:53 BoogieIcfgContainer [2020-12-09 19:26:53,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:26:53,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:26:53,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:26:53,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:26:53,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:26:36" (1/3) ... [2020-12-09 19:26:53,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7553392e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:26:53, skipping insertion in model container [2020-12-09 19:26:53,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:26:37" (2/3) ... [2020-12-09 19:26:53,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7553392e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:26:53, skipping insertion in model container [2020-12-09 19:26:53,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:53" (3/3) ... [2020-12-09 19:26:53,108 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-12-09 19:26:53,117 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:26:53,120 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:26:53,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:26:53,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:26:53,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:26:53,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:26:53,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:26:53,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:26:53,148 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:26:53,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:26:53,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:26:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-09 19:26:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 19:26:53,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:26:53,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:26:53,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:26:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:26:53,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2020-12-09 19:26:53,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:26:53,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205466749] [2020-12-09 19:26:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:26:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:26:56,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 19:26:56,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:26:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:26:56,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:26:56,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205466749] [2020-12-09 19:26:56,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:26:56,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:26:56,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929962441] [2020-12-09 19:26:56,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:26:56,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:26:56,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:26:56,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:26:56,304 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-12-09 19:26:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:26:56,315 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-09 19:26:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:26:56,316 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-09 19:26:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:26:56,321 INFO L225 Difference]: With dead ends: 31 [2020-12-09 19:26:56,321 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 19:26:56,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:26:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 19:26:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 19:26:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 19:26:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-09 19:26:56,343 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2020-12-09 19:26:56,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:26:56,343 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-09 19:26:56,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:26:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-09 19:26:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 19:26:56,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:26:56,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:26:56,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:26:56,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:26:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:26:56,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2020-12-09 19:26:56,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:26:56,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234393987] [2020-12-09 19:26:56,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 19:27:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:27:13,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:27:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:27:25,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:27:25,537 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 19:27:25,537 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:27:25,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:27:25,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:27:25 BoogieIcfgContainer [2020-12-09 19:27:25,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:27:25,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:27:25,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:27:25,781 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:27:25,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:26:53" (3/4) ... [2020-12-09 19:27:25,782 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:27:25,810 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08b122da-98aa-454c-84a0-ee3c6c060299/bin/utaipan/witness.graphml [2020-12-09 19:27:25,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:27:25,811 INFO L168 Benchmark]: Toolchain (without parser) took 48889.60 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 40.3 MB in the beginning and 47.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:27:25,812 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:27:25,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.73 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 29.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:27:25,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.28 ms. Allocated memory is still 60.8 MB. Free memory was 29.2 MB in the beginning and 44.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:27:25,813 INFO L168 Benchmark]: Boogie Preprocessor took 23.05 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 42.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:27:25,813 INFO L168 Benchmark]: RCFGBuilder took 15947.27 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 29.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:27:25,814 INFO L168 Benchmark]: TraceAbstraction took 32676.90 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 28.9 MB in the beginning and 49.4 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:27:25,814 INFO L168 Benchmark]: Witness Printer took 29.31 ms. Allocated memory is still 75.5 MB. Free memory was 49.0 MB in the beginning and 47.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:27:25,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.73 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 29.4 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 47.28 ms. Allocated memory is still 60.8 MB. Free memory was 29.2 MB in the beginning and 44.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.05 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 42.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 15947.27 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 29.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 32676.90 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 28.9 MB in the beginning and 49.4 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 29.31 ms. Allocated memory is still 75.5 MB. Free memory was 49.0 MB in the beginning and 47.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. VerificationResult: UNSAFE, OverallTime: 32.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 20.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...