./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG --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 b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c ..................................................................................................................................................................................................................................................... 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_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG --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 b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c ...................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 04:42:21,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:42:21,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:42:21,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:42:21,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:42:21,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:42:21,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:42:21,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:42:21,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:42:21,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:42:21,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:42:21,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:42:21,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:42:21,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:42:21,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:42:21,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:42:21,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:42:21,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:42:21,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:42:21,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:42:21,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:42:21,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:42:21,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:42:21,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:42:21,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:42:21,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:42:21,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:42:21,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:42:21,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:42:21,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:42:21,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:42:21,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:42:21,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:42:21,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:42:21,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:42:21,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:42:21,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:42:21,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:42:21,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:42:21,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:42:21,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:42:21,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:42:21,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:42:21,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:42:21,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:42:21,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:42:21,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:42:21,725 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:42:21,725 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:42:21,725 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:42:21,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:42:21,726 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:42:21,726 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:42:21,727 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:42:21,727 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:42:21,727 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:42:21,728 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:42:21,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:42:21,729 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:42:21,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:42:21,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:42:21,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:42:21,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:42:21,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:42:21,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:42:21,731 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:42:21,731 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:42:21,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:42:21,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:42:21,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:42:21,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:42:21,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:42:21,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:42:21,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:42:21,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:42:21,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:42:21,735 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:42:21,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:42:21,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:42:21,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:42:21,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:42:21,736 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_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c [2021-10-29 04:42:22,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:42:22,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:42:22,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:42:22,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:42:22,154 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:42:22,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-29 04:42:22,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/37c1abe23/cc68a1292b8642959cc34ea4d47cbdc2/FLAG580bef5dd [2021-10-29 04:42:22,940 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:42:22,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-29 04:42:22,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/37c1abe23/cc68a1292b8642959cc34ea4d47cbdc2/FLAG580bef5dd [2021-10-29 04:42:23,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/37c1abe23/cc68a1292b8642959cc34ea4d47cbdc2 [2021-10-29 04:42:23,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:42:23,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:42:23,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:42:23,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:42:23,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:42:23,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3652e87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23, skipping insertion in model container [2021-10-29 04:42:23,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:42:23,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:42:23,609 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_5b478210-b531-47d4-87e8-c5b11a1062f8/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-29 04:42:23,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:42:23,624 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:42:23,648 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_5b478210-b531-47d4-87e8-c5b11a1062f8/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-29 04:42:23,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:42:23,666 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:42:23,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23 WrapperNode [2021-10-29 04:42:23,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:42:23,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:42:23,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:42:23,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:42:23,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:42:23,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:42:23,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:42:23,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:42:23,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:42:23,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:42:23,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:42:23,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:42:23,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (1/1) ... [2021-10-29 04:42:23,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:42:23,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:42:23,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:42:23,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:42:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:42:23,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:42:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:42:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:42:24,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:42:24,204 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-29 04:42:24,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:24 BoogieIcfgContainer [2021-10-29 04:42:24,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:42:24,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:42:24,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:42:24,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:42:24,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:42:23" (1/3) ... [2021-10-29 04:42:24,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25ff79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:42:24, skipping insertion in model container [2021-10-29 04:42:24,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:23" (2/3) ... [2021-10-29 04:42:24,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25ff79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:42:24, skipping insertion in model container [2021-10-29 04:42:24,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:24" (3/3) ... [2021-10-29 04:42:24,219 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-10-29 04:42:24,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:42:24,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:42:24,337 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:42:24,361 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:42:24,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:42:24,405 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) [2021-10-29 04:42:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 04:42:24,411 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:24,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 04:42:24,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:42:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash 67911, now seen corresponding path program 1 times [2021-10-29 04:42:24,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:42:24,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199273035] [2021-10-29 04:42:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:24,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:42:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:42:24,595 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:42:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:42:24,687 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:42:24,691 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:42:24,694 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:42:24,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:42:24,702 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 04:42:24,707 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:42:24,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:42:24 BoogieIcfgContainer [2021-10-29 04:42:24,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:42:24,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:42:24,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:42:24,737 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:42:24,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:24" (3/4) ... [2021-10-29 04:42:24,742 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:42:24,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:42:24,748 INFO L168 Benchmark]: Toolchain (without parser) took 1474.79 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 84.6 MB in the beginning and 95.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:42:24,750 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 115.3 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:42:24,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.80 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 84.6 MB in the beginning and 124.7 MB in the end (delta: -40.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:42:24,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.43 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 122.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:42:24,755 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.0 MB in the end (delta: 880.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:42:24,757 INFO L168 Benchmark]: RCFGBuilder took 467.82 ms. Allocated memory is still 151.0 MB. Free memory was 121.3 MB in the beginning and 109.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:42:24,766 INFO L168 Benchmark]: TraceAbstraction took 522.89 ms. Allocated memory is still 151.0 MB. Free memory was 108.8 MB in the beginning and 96.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:42:24,767 INFO L168 Benchmark]: Witness Printer took 6.92 ms. Allocated memory is still 151.0 MB. Free memory was 96.2 MB in the beginning and 95.6 MB in the end (delta: 606.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:42:24,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 115.3 MB. Free memory is still 69.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.80 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 84.6 MB in the beginning and 124.7 MB in the end (delta: -40.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.43 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 122.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.01 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.0 MB in the end (delta: 880.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 467.82 ms. Allocated memory is still 151.0 MB. Free memory was 121.3 MB in the beginning and 109.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 522.89 ms. Allocated memory is still 151.0 MB. Free memory was 108.8 MB in the beginning and 96.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.92 ms. Allocated memory is still 151.0 MB. Free memory was 96.2 MB in the beginning and 95.6 MB in the end (delta: 606.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 04:42:24,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/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-b2eff8b [2021-10-29 04:42:27,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:42:27,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:42:27,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:42:27,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:42:27,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:42:27,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:42:27,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:42:27,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:42:27,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:42:27,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:42:27,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:42:27,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:42:27,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:42:27,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:42:28,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:42:28,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:42:28,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:42:28,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:42:28,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:42:28,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:42:28,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:42:28,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:42:28,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:42:28,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:42:28,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:42:28,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:42:28,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:42:28,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:42:28,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:42:28,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:42:28,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:42:28,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:42:28,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:42:28,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:42:28,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:42:28,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:42:28,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:42:28,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:42:28,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:42:28,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:42:28,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:42:28,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:42:28,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:42:28,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:42:28,073 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:42:28,073 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:42:28,073 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:42:28,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:42:28,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:42:28,074 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:42:28,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:42:28,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:42:28,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:42:28,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:42:28,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:42:28,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:42:28,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:42:28,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:42:28,077 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:42:28,078 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:42:28,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:42:28,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:42:28,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:42:28,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:42:28,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:42:28,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:42:28,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:42:28,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:42:28,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:42:28,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:42:28,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:42:28,081 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:42:28,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:42:28,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:42:28,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:42:28,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:42:28,082 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_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c [2021-10-29 04:42:28,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:42:28,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:42:28,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:42:28,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:42:28,603 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:42:28,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-29 04:42:28,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/962812552/73b36a2b50524266ae7713a383c4dda3/FLAGd155c01af [2021-10-29 04:42:29,404 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:42:29,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-29 04:42:29,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/962812552/73b36a2b50524266ae7713a383c4dda3/FLAGd155c01af [2021-10-29 04:42:29,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/data/962812552/73b36a2b50524266ae7713a383c4dda3 [2021-10-29 04:42:29,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:42:29,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:42:29,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:42:29,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:42:29,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:42:29,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:42:29" (1/1) ... [2021-10-29 04:42:29,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79625da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:29, skipping insertion in model container [2021-10-29 04:42:29,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:42:29" (1/1) ... [2021-10-29 04:42:29,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:42:29,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:42:29,977 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_5b478210-b531-47d4-87e8-c5b11a1062f8/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-29 04:42:29,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:42:29,996 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:42:30,022 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_5b478210-b531-47d4-87e8-c5b11a1062f8/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-29 04:42:30,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:42:30,053 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:42:30,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30 WrapperNode [2021-10-29 04:42:30,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:42:30,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:42:30,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:42:30,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:42:30,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:42:30,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:42:30,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:42:30,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:42:30,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:42:30,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:42:30,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:42:30,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:42:30,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (1/1) ... [2021-10-29 04:42:30,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:42:30,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:42:30,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:42:30,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:42:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:42:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:42:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:42:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:42:40,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:42:40,838 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-29 04:42:40,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:40 BoogieIcfgContainer [2021-10-29 04:42:40,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:42:40,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:42:40,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:42:40,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:42:40,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:42:29" (1/3) ... [2021-10-29 04:42:40,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b5ed71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:42:40, skipping insertion in model container [2021-10-29 04:42:40,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:42:30" (2/3) ... [2021-10-29 04:42:40,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b5ed71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:42:40, skipping insertion in model container [2021-10-29 04:42:40,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:40" (3/3) ... [2021-10-29 04:42:40,857 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-10-29 04:42:40,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:42:40,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:42:40,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:42:40,930 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:42:40,931 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:42:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:42:40,953 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:40,954 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:40,955 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:42:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-10-29 04:42:40,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:42:40,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181461559] [2021-10-29 04:42:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:40,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:42:40,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:42:41,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:42:41,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:42:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:42:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:42:44,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:42:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:44,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:42:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:42:44,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:42:44,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181461559] [2021-10-29 04:42:44,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181461559] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:42:44,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:42:44,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:42:44,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278683795] [2021-10-29 04:42:44,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:42:44,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:42:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:42:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:42:44,507 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:42:44,534 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-29 04:42:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:42:44,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:42:44,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:42:44,559 INFO L225 Difference]: With dead ends: 27 [2021-10-29 04:42:44,576 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 04:42:44,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:42:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 04:42:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 04:42:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-29 04:42:44,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-10-29 04:42:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:42:44,638 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-29 04:42:44,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:42:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-29 04:42:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:42:44,639 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:42:44,640 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:42:44,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 04:42:44,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:42:44,853 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:42:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:42:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-10-29 04:42:44,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:42:44,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183884999] [2021-10-29 04:42:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:42:44,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:42:44,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:42:44,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:42:44,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:45:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:45:13,046 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:45:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:45:21,272 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 04:45:21,272 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:45:21,273 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:45:21,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:45:21,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:45:21,478 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 04:45:21,480 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:45:21,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:45:21 BoogieIcfgContainer [2021-10-29 04:45:21,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:45:21,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:45:21,504 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:45:21,504 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:45:21,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:42:40" (3/4) ... [2021-10-29 04:45:21,510 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:45:21,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:45:21,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:45:21,550 INFO L168 Benchmark]: Toolchain (without parser) took 171815.89 ms. Allocated memory is still 83.9 MB. Free memory was 49.5 MB in the beginning and 58.3 MB in the end (delta: -8.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:45:21,553 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:45:21,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.77 ms. Allocated memory is still 83.9 MB. Free memory was 49.3 MB in the beginning and 68.1 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:45:21,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.31 ms. Allocated memory is still 83.9 MB. Free memory was 68.1 MB in the beginning and 66.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:45:21,555 INFO L168 Benchmark]: Boogie Preprocessor took 73.59 ms. Allocated memory is still 83.9 MB. Free memory was 66.3 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:45:21,556 INFO L168 Benchmark]: RCFGBuilder took 10594.93 ms. Allocated memory is still 83.9 MB. Free memory was 64.9 MB in the beginning and 54.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:45:21,557 INFO L168 Benchmark]: TraceAbstraction took 160659.72 ms. Allocated memory is still 83.9 MB. Free memory was 54.4 MB in the beginning and 60.4 MB in the end (delta: -6.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:45:21,557 INFO L168 Benchmark]: Witness Printer took 45.18 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 58.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:45:21,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.77 ms. Allocated memory is still 83.9 MB. Free memory was 49.3 MB in the beginning and 68.1 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 116.31 ms. Allocated memory is still 83.9 MB. Free memory was 68.1 MB in the beginning and 66.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.59 ms. Allocated memory is still 83.9 MB. Free memory was 66.3 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 10594.93 ms. Allocated memory is still 83.9 MB. Free memory was 64.9 MB in the beginning and 54.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 160659.72 ms. Allocated memory is still 83.9 MB. Free memory was 54.4 MB in the beginning and 60.4 MB in the end (delta: -6.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 45.18 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 58.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 160.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 151.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:45:21,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b478210-b531-47d4-87e8-c5b11a1062f8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...