./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8 --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_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8 --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 0.2.1-dev-4e77c04 [2021-10-13 07:52:00,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:52:00,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:52:00,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:52:00,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:52:00,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:52:00,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:52:00,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:52:00,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:52:00,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:52:00,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:52:00,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:52:00,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:52:00,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:52:00,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:52:00,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:52:00,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:52:00,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:52:00,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:52:00,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:52:00,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:52:00,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:52:00,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:52:00,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:52:00,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:52:00,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:52:00,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:52:00,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:52:00,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:52:00,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:52:00,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:52:00,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:52:00,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:52:00,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:52:00,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:52:00,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:52:00,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:52:00,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:52:00,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:52:00,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:52:00,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:52:00,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:52:00,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:52:00,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:52:00,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:52:00,518 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:52:00,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:52:00,518 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:52:00,518 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:52:00,519 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:52:00,525 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:52:00,525 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:52:00,526 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:52:00,527 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:52:00,527 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:52:00,527 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:52:00,528 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:52:00,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:52:00,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:52:00,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:52:00,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:52:00,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:52:00,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:52:00,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:52:00,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:52:00,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:52:00,531 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:52:00,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:52:00,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:52:00,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:52:00,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:52:00,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:52:00,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:00,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:52:00,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:52:00,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:52:00,535 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:52:00,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:52:00,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:52:00,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:52:00,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:52:00,536 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_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2021-10-13 07:52:00,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:52:00,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:52:00,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:52:00,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:52:00,849 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:52:00,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-13 07:52:00,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/8a98e9a65/bf6d1962de6f45eab0263398e8c9c855/FLAGe734ae3e9 [2021-10-13 07:52:01,471 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:52:01,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-13 07:52:01,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/8a98e9a65/bf6d1962de6f45eab0263398e8c9c855/FLAGe734ae3e9 [2021-10-13 07:52:01,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/8a98e9a65/bf6d1962de6f45eab0263398e8c9c855 [2021-10-13 07:52:01,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:52:01,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:52:01,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:01,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:52:01,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:52:01,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:01" (1/1) ... [2021-10-13 07:52:01,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50753c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:01, skipping insertion in model container [2021-10-13 07:52:01,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:01" (1/1) ... [2021-10-13 07:52:01,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:52:01,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:52:02,091 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_b3476571-b36c-4874-a31e-b7743a79e7e5/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-13 07:52:02,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:02,108 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:52:02,149 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_b3476571-b36c-4874-a31e-b7743a79e7e5/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-13 07:52:02,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:02,169 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:52:02,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02 WrapperNode [2021-10-13 07:52:02,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:02,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:02,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:52:02,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:52:02,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:02,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:52:02,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:52:02,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:52:02,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:52:02,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:52:02,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:52:02,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:52:02,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (1/1) ... [2021-10-13 07:52:02,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:02,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:02,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:52:02,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:52:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:52:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:52:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:52:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:52:02,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:52:02,705 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 07:52:02,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:02 BoogieIcfgContainer [2021-10-13 07:52:02,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:52:02,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:52:02,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:52:02,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:52:02,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:01" (1/3) ... [2021-10-13 07:52:02,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6742bc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:02, skipping insertion in model container [2021-10-13 07:52:02,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:02" (2/3) ... [2021-10-13 07:52:02,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6742bc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:02, skipping insertion in model container [2021-10-13 07:52:02,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:02" (3/3) ... [2021-10-13 07:52:02,716 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-10-13 07:52:02,722 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:52:02,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:52:02,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:52:02,809 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, mConcurrency=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 [2021-10-13 07:52:02,809 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:52:02,822 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) [2021-10-13 07:52:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:52:02,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:02,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:52:02,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:02,844 INFO L82 PathProgramCache]: Analyzing trace with hash 73805, now seen corresponding path program 1 times [2021-10-13 07:52:02,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:52:02,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072032803] [2021-10-13 07:52:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:02,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:52:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:52:02,998 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:52:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:52:03,054 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:52:03,057 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:52:03,058 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:52:03,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:52:03,067 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:52:03,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:52:03 BoogieIcfgContainer [2021-10-13 07:52:03,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:52:03,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:52:03,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:52:03,093 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:52:03,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:02" (3/4) ... [2021-10-13 07:52:03,098 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:52:03,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:52:03,103 INFO L168 Benchmark]: Toolchain (without parser) took 1267.92 ms. Allocated memory is still 111.1 MB. Free memory was 71.7 MB in the beginning and 56.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,105 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 87.9 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:52:03,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.17 ms. Allocated memory is still 111.1 MB. Free memory was 71.5 MB in the beginning and 85.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.26 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 83.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:52:03,110 INFO L168 Benchmark]: Boogie Preprocessor took 48.07 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 82.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,111 INFO L168 Benchmark]: RCFGBuilder took 433.31 ms. Allocated memory is still 111.1 MB. Free memory was 82.4 MB in the beginning and 70.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,117 INFO L168 Benchmark]: TraceAbstraction took 380.09 ms. Allocated memory is still 111.1 MB. Free memory was 69.3 MB in the beginning and 56.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,120 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 111.1 MB. Free memory was 56.5 MB in the beginning and 56.1 MB in the end (delta: 480.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:52:03,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 87.9 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.17 ms. Allocated memory is still 111.1 MB. Free memory was 71.5 MB in the beginning and 85.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.26 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 83.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.07 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 82.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 433.31 ms. Allocated memory is still 111.1 MB. Free memory was 82.4 MB in the beginning and 70.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 380.09 ms. Allocated memory is still 111.1 MB. Free memory was 69.3 MB in the beginning and 56.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 111.1 MB. Free memory was 56.5 MB in the beginning and 56.1 MB in the end (delta: 480.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 265.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, 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: 14.7ms SsaConstructionTime, 53.7ms 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 [2021-10-13 07:52:03,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:52:05,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:52:05,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:52:05,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:52:05,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:52:05,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:52:05,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:52:05,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:52:05,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:52:05,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:52:05,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:52:05,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:52:05,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:52:05,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:52:05,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:52:05,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:52:05,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:52:05,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:52:05,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:52:05,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:52:05,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:52:05,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:52:05,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:52:05,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:52:05,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:52:05,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:52:05,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:52:05,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:52:05,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:52:05,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:52:05,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:52:05,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:52:05,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:52:05,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:52:05,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:52:05,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:52:05,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:52:05,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:52:05,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:52:05,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:52:05,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:52:05,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:52:05,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:52:05,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:52:05,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:52:05,728 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:52:05,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:52:05,729 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:52:05,729 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:52:05,729 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:52:05,729 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:52:05,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:52:05,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:52:05,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:52:05,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:52:05,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:52:05,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:52:05,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:52:05,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:52:05,732 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:52:05,732 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:52:05,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:52:05,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:52:05,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:52:05,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:52:05,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:52:05,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:52:05,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:52:05,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:05,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:52:05,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:52:05,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:52:05,735 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:52:05,735 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:52:05,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:52:05,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:52:05,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:52:05,736 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_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2021-10-13 07:52:06,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:52:06,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:52:06,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:52:06,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:52:06,135 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:52:06,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-13 07:52:06,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/252d60cac/e30a966b8ad94b098de9e9e10e1ebac5/FLAG223005d2e [2021-10-13 07:52:06,783 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:52:06,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-13 07:52:06,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/252d60cac/e30a966b8ad94b098de9e9e10e1ebac5/FLAG223005d2e [2021-10-13 07:52:07,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/data/252d60cac/e30a966b8ad94b098de9e9e10e1ebac5 [2021-10-13 07:52:07,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:52:07,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:52:07,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:07,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:52:07,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:52:07,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eee3e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07, skipping insertion in model container [2021-10-13 07:52:07,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:52:07,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:52:07,345 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_b3476571-b36c-4874-a31e-b7743a79e7e5/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-13 07:52:07,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:07,360 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:52:07,387 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_b3476571-b36c-4874-a31e-b7743a79e7e5/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-13 07:52:07,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:52:07,445 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:52:07,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07 WrapperNode [2021-10-13 07:52:07,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:52:07,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:07,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:52:07,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:52:07,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:52:07,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:52:07,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:52:07,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:52:07,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:52:07,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:52:07,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:52:07,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:52:07,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (1/1) ... [2021-10-13 07:52:07,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:52:07,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:52:07,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:52:07,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:52:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:52:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:52:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:52:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:52:23,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:52:23,563 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 07:52:23,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:23 BoogieIcfgContainer [2021-10-13 07:52:23,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:52:23,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:52:23,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:52:23,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:52:23,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:07" (1/3) ... [2021-10-13 07:52:23,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:23, skipping insertion in model container [2021-10-13 07:52:23,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:07" (2/3) ... [2021-10-13 07:52:23,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:23, skipping insertion in model container [2021-10-13 07:52:23,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:23" (3/3) ... [2021-10-13 07:52:23,584 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-10-13 07:52:23,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:52:23,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:52:23,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:52:23,647 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, mConcurrency=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 [2021-10-13 07:52:23,648 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:52:23,662 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) [2021-10-13 07:52:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:52:23,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:23,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:23,668 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-10-13 07:52:23,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:23,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599177853] [2021-10-13 07:52:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:23,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:23,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:23,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:52:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:52:27,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:52:27,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:52:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:27,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:52:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:52:27,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:52:27,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599177853] [2021-10-13 07:52:27,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599177853] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:52:27,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:52:27,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:52:27,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538554328] [2021-10-13 07:52:27,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:52:27,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:52:27,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:52:27,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:52:27,360 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) [2021-10-13 07:52:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:52:27,374 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-13 07:52:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:52:27,376 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 [2021-10-13 07:52:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:52:27,385 INFO L225 Difference]: With dead ends: 31 [2021-10-13 07:52:27,385 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:52:27,388 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 [2021-10-13 07:52:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:52:27,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 07:52:27,415 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) [2021-10-13 07:52:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-13 07:52:27,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-10-13 07:52:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:52:27,418 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-13 07:52:27,418 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) [2021-10-13 07:52:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-13 07:52:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:52:27,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:52:27,419 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:52:27,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:52:27,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:52:27,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:52:27,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:52:27,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-10-13 07:52:27,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:52:27,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683452901] [2021-10-13 07:52:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:52:27,641 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:52:27,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:52:27,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:52:27,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:54:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:54:36,726 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:54:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:54:53,453 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:54:53,453 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:54:53,455 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:54:53,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:53,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:53,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:54:53,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:54:53 BoogieIcfgContainer [2021-10-13 07:54:53,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:54:53,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:54:53,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:54:53,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:54:53,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:23" (3/4) ... [2021-10-13 07:54:53,690 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:54:53,733 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:54:53,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:54:53,744 INFO L168 Benchmark]: Toolchain (without parser) took 166595.89 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 38.5 MB in the beginning and 50.9 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:53,746 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:53,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.72 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 43.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:53,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.49 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:53,750 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 40.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:53,751 INFO L168 Benchmark]: RCFGBuilder took 16021.79 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 30.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:53,752 INFO L168 Benchmark]: TraceAbstraction took 150118.80 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 29.8 MB in the beginning and 52.9 MB in the end (delta: -23.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:53,754 INFO L168 Benchmark]: Witness Printer took 50.03 ms. Allocated memory is still 77.6 MB. Free memory was 52.9 MB in the beginning and 50.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:53,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.5 MB in the end (delta: 42.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.72 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 43.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.49 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 40.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 16021.79 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 30.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 150118.80 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 29.8 MB in the beginning and 52.9 MB in the end (delta: -23.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 50.03 ms. Allocated memory is still 77.6 MB. Free memory was 52.9 MB in the beginning and 50.9 MB in the end (delta: 2.0 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: 150021.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.8ms, AutomataDifference: 44.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, 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: 15.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.1ms SsaConstructionTime, 132139.1ms SatisfiabilityAnalysisTime, 479.7ms 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! [2021-10-13 07:54:53,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3476571-b36c-4874-a31e-b7743a79e7e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...