./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.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_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/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_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/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_ce1f646b-2228-4eab-9be7-34d477fced0c/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 90741c14eee92622488e9390ec37eb8bb78b90b3 ................................................................................................................................................................................................................................................. 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_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/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_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/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_ce1f646b-2228-4eab-9be7-34d477fced0c/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 90741c14eee92622488e9390ec37eb8bb78b90b3 .................................................................................................................................................................................................................................................................................................. 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 07:02:31,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:02:31,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:02:31,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:02:31,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:02:31,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:02:31,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:02:31,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:02:31,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:02:31,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:02:31,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:02:31,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:02:31,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:02:31,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:02:31,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:02:31,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:02:31,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:02:31,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:02:31,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:02:31,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:02:31,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:02:31,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:02:31,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:02:31,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:02:31,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:02:31,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:02:31,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:02:31,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:02:31,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:02:31,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:02:31,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:02:31,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:02:31,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:02:31,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:02:31,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:02:31,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:02:31,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:02:31,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:02:31,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:02:31,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:02:31,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:02:31,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:02:31,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:02:31,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:02:31,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:02:31,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:02:31,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:02:31,703 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:02:31,703 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:02:31,704 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:02:31,710 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:02:31,710 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:02:31,711 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:02:31,712 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:02:31,712 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:02:31,712 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:02:31,712 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:02:31,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:02:31,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:02:31,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:02:31,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:02:31,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:02:31,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:02:31,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:02:31,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:02:31,715 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:02:31,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:02:31,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:02:31,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:02:31,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:02:31,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:02:31,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:02:31,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:02:31,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:02:31,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:02:31,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:02:31,719 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:02:31,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:02:31,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:02:31,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:02:31,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:02:31,720 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_ce1f646b-2228-4eab-9be7-34d477fced0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2021-10-13 07:02:31,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:02:31,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:02:31,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:02:31,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:02:31,988 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:02:31,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-13 07:02:32,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/df3ac1d95/7df4c335640e4917993796d7b08f0452/FLAG7038cf6b8 [2021-10-13 07:02:32,646 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:02:32,646 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-13 07:02:32,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/df3ac1d95/7df4c335640e4917993796d7b08f0452/FLAG7038cf6b8 [2021-10-13 07:02:32,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/df3ac1d95/7df4c335640e4917993796d7b08f0452 [2021-10-13 07:02:33,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:02:33,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:02:33,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:33,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:02:33,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:02:33,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:32" (1/1) ... [2021-10-13 07:02:33,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42cd9b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33, skipping insertion in model container [2021-10-13 07:02:33,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:32" (1/1) ... [2021-10-13 07:02:33,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:02:33,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:02:33,278 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_ce1f646b-2228-4eab-9be7-34d477fced0c/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-13 07:02:33,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:33,289 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:02:33,307 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_ce1f646b-2228-4eab-9be7-34d477fced0c/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-13 07:02:33,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:33,320 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:02:33,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33 WrapperNode [2021-10-13 07:02:33,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:33,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:33,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:02:33,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:02:33,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:33,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:02:33,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:02:33,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:02:33,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:02:33,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:02:33,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:02:33,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:02:33,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (1/1) ... [2021-10-13 07:02:33,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:02:33,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:33,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:02:33,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:02:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:02:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:02:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:02:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:02:33,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:02:33,808 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:02:33,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:33 BoogieIcfgContainer [2021-10-13 07:02:33,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:02:33,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:02:33,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:02:33,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:02:33,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:02:32" (1/3) ... [2021-10-13 07:02:33,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e7da78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:33, skipping insertion in model container [2021-10-13 07:02:33,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:33" (2/3) ... [2021-10-13 07:02:33,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e7da78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:33, skipping insertion in model container [2021-10-13 07:02:33,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:33" (3/3) ... [2021-10-13 07:02:33,831 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-13 07:02:33,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:02:33,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:02:33,913 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:02:33,920 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 07:02:33,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:02:33,933 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 07:02:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:02:33,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:33,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:02:33,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:33,945 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-13 07:02:33,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:02:33,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714181129] [2021-10-13 07:02:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:33,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:02:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:02:34,087 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:02:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:02:34,154 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:02:34,157 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:02:34,159 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:02:34,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:02:34,167 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:02:34,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:02:34 BoogieIcfgContainer [2021-10-13 07:02:34,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:02:34,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:02:34,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:02:34,192 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:02:34,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:33" (3/4) ... [2021-10-13 07:02:34,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:02:34,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:02:34,200 INFO L168 Benchmark]: Toolchain (without parser) took 1195.15 ms. Allocated memory is still 115.3 MB. Free memory was 87.6 MB in the beginning and 63.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:34,201 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:02:34,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.60 ms. Allocated memory is still 115.3 MB. Free memory was 87.6 MB in the beginning and 90.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:34,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.79 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 89.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:34,206 INFO L168 Benchmark]: Boogie Preprocessor took 32.24 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 88.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:34,207 INFO L168 Benchmark]: RCFGBuilder took 416.52 ms. Allocated memory is still 115.3 MB. Free memory was 88.3 MB in the beginning and 77.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:34,208 INFO L168 Benchmark]: TraceAbstraction took 375.90 ms. Allocated memory is still 115.3 MB. Free memory was 76.9 MB in the beginning and 64.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:34,213 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 115.3 MB. Free memory was 64.0 MB in the beginning and 63.7 MB in the end (delta: 320.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:02:34,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 69.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.60 ms. Allocated memory is still 115.3 MB. Free memory was 87.6 MB in the beginning and 90.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.79 ms. Allocated memory is still 115.3 MB. Free memory was 90.9 MB in the beginning and 89.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.24 ms. Allocated memory is still 115.3 MB. Free memory was 89.4 MB in the beginning and 88.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 416.52 ms. Allocated memory is still 115.3 MB. Free memory was 88.3 MB in the beginning and 77.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 375.90 ms. Allocated memory is still 115.3 MB. Free memory was 76.9 MB in the beginning and 64.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 115.3 MB. Free memory was 64.0 MB in the beginning and 63.7 MB in the end (delta: 320.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [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: 254.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.5ms, 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: 11.8ms SsaConstructionTime, 57.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:02:34,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/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 07:02:36,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:02:36,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:02:36,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:02:36,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:02:36,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:02:36,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:02:36,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:02:36,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:02:36,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:02:36,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:02:36,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:02:36,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:02:36,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:02:36,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:02:36,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:02:36,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:02:36,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:02:36,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:02:36,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:02:36,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:02:36,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:02:36,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:02:36,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:02:36,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:02:36,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:02:36,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:02:36,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:02:36,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:02:36,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:02:36,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:02:36,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:02:36,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:02:36,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:02:36,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:02:36,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:02:36,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:02:36,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:02:36,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:02:36,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:02:36,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:02:36,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:02:36,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:02:36,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:02:36,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:02:36,716 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:02:36,717 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:02:36,717 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:02:36,717 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:02:36,718 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:02:36,718 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:02:36,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:02:36,722 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:02:36,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:02:36,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:02:36,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:02:36,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:02:36,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:02:36,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:02:36,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:02:36,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:02:36,725 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:02:36,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:02:36,725 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:02:36,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:02:36,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:02:36,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:02:36,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:02:36,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:02:36,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:02:36,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:02:36,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:02:36,728 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:02:36,728 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:02:36,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:02:36,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:02:36,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:02:36,730 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_ce1f646b-2228-4eab-9be7-34d477fced0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2021-10-13 07:02:37,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:02:37,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:02:37,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:02:37,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:02:37,178 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:02:37,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-13 07:02:37,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/0dc06f355/2396b541ac3547798a450c5fefb12878/FLAGc8f1b5661 [2021-10-13 07:02:37,685 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:02:37,686 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-13 07:02:37,700 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/0dc06f355/2396b541ac3547798a450c5fefb12878/FLAGc8f1b5661 [2021-10-13 07:02:38,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/data/0dc06f355/2396b541ac3547798a450c5fefb12878 [2021-10-13 07:02:38,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:02:38,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:02:38,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:38,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:02:38,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:02:38,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c24efe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38, skipping insertion in model container [2021-10-13 07:02:38,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:02:38,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:02:38,325 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_ce1f646b-2228-4eab-9be7-34d477fced0c/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-13 07:02:38,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:38,343 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:02:38,371 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_ce1f646b-2228-4eab-9be7-34d477fced0c/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-13 07:02:38,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:02:38,405 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:02:38,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38 WrapperNode [2021-10-13 07:02:38,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:02:38,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:38,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:02:38,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:02:38,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:02:38,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:02:38,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:02:38,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:02:38,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:02:38,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:02:38,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:02:38,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:02:38,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (1/1) ... [2021-10-13 07:02:38,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:02:38,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:38,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:02:38,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:02:38,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:02:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:02:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:02:45,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:02:45,511 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:02:45,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:45 BoogieIcfgContainer [2021-10-13 07:02:45,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:02:45,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:02:45,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:02:45,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:02:45,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:02:38" (1/3) ... [2021-10-13 07:02:45,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763fc17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:45, skipping insertion in model container [2021-10-13 07:02:45,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:02:38" (2/3) ... [2021-10-13 07:02:45,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@763fc17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:02:45, skipping insertion in model container [2021-10-13 07:02:45,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:45" (3/3) ... [2021-10-13 07:02:45,522 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-13 07:02:45,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:02:45,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:02:45,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:02:45,588 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 07:02:45,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:02:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 07:02:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:02:45,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:45,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:45,606 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:45,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:45,612 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-13 07:02:45,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:45,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238700430] [2021-10-13 07:02:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:45,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:45,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:45,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:45,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:02:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:02:46,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:02:46,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:46,952 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 07:02:46,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:02:47,035 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 07:02:47,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:47,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238700430] [2021-10-13 07:02:47,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238700430] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:02:47,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:47,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:02:47,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594865506] [2021-10-13 07:02:47,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:02:47,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:02:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:02:47,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:02:47,065 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 07:02:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:02:47,080 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-13 07:02:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:02:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 07:02:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:02:47,093 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:02:47,093 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:02:47,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:02:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:02:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:02:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 07:02:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 07:02:47,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-13 07:02:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:02:47,127 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 07:02:47,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 07:02:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 07:02:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:02:47,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:02:47,129 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:02:47,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:02:47,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:47,342 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:02:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:02:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-13 07:02:47,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:02:47,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999332342] [2021-10-13 07:02:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:02:47,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:02:47,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:02:47,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:02:47,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:03:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:03:41,817 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:03:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:03:45,561 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:03:45,561 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:03:45,563 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:03:45,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:03:45,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:03:45,769 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:03:45,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:03:45 BoogieIcfgContainer [2021-10-13 07:03:45,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:03:45,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:03:45,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:03:45,793 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:03:45,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:02:45" (3/4) ... [2021-10-13 07:03:45,796 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:03:45,830 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:03:45,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:03:45,832 INFO L168 Benchmark]: Toolchain (without parser) took 67736.92 ms. Allocated memory is still 86.0 MB. Free memory was 51.6 MB in the beginning and 62.5 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:03:45,833 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory was 67.9 MB in the beginning and 67.8 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:03:45,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.66 ms. Allocated memory is still 86.0 MB. Free memory was 51.5 MB in the beginning and 69.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:45,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.28 ms. Allocated memory is still 86.0 MB. Free memory was 69.5 MB in the beginning and 67.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:03:45,835 INFO L168 Benchmark]: Boogie Preprocessor took 26.90 ms. Allocated memory is still 86.0 MB. Free memory was 67.8 MB in the beginning and 66.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:45,835 INFO L168 Benchmark]: RCFGBuilder took 7042.90 ms. Allocated memory is still 86.0 MB. Free memory was 66.4 MB in the beginning and 57.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:45,836 INFO L168 Benchmark]: TraceAbstraction took 60276.87 ms. Allocated memory is still 86.0 MB. Free memory was 56.7 MB in the beginning and 64.2 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:03:45,837 INFO L168 Benchmark]: Witness Printer took 37.95 ms. Allocated memory is still 86.0 MB. Free memory was 64.2 MB in the beginning and 62.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:03:45,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory was 67.9 MB in the beginning and 67.8 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.66 ms. Allocated memory is still 86.0 MB. Free memory was 51.5 MB in the beginning and 69.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.28 ms. Allocated memory is still 86.0 MB. Free memory was 69.5 MB in the beginning and 67.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.90 ms. Allocated memory is still 86.0 MB. Free memory was 67.8 MB in the beginning and 66.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7042.90 ms. Allocated memory is still 86.0 MB. Free memory was 66.4 MB in the beginning and 57.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 60276.87 ms. Allocated memory is still 86.0 MB. Free memory was 56.7 MB in the beginning and 64.2 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 37.95 ms. Allocated memory is still 86.0 MB. Free memory was 64.2 MB in the beginning and 62.5 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: - 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); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60188.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.3ms, AutomataDifference: 51.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 16.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.3ms SsaConstructionTime, 55556.3ms SatisfiabilityAnalysisTime, 231.4ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 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 07:03:45,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce1f646b-2228-4eab-9be7-34d477fced0c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...