./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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 77dfb89b316b35597df251f3cfe048e45df64ba9 ....................................................................................................................................................................................................................................................... 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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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 77dfb89b316b35597df251f3cfe048e45df64ba9 ........................................................................................................................................................................................................................................................................................................ 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 07:57:52,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:57:52,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:57:52,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:57:52,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:57:52,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:57:52,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:57:52,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:57:52,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:57:52,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:57:52,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:57:52,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:57:52,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:57:52,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:57:52,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:57:52,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:57:52,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:57:52,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:57:52,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:57:52,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:57:52,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:57:52,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:57:52,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:57:52,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:57:52,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:57:52,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:57:52,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:57:52,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:57:52,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:57:52,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:57:52,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:57:52,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:57:52,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:57:52,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:57:52,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:57:52,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:57:52,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:57:52,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:57:52,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:57:52,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:57:52,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:57:52,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:57:52,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:57:52,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:57:52,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:57:52,822 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:57:52,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:57:52,823 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:57:52,823 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:57:52,824 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:57:52,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:57:52,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:57:52,833 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:57:52,833 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:57:52,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:57:52,834 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:57:52,834 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:57:52,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:57:52,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:57:52,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:57:52,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:57:52,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:57:52,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:57:52,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:57:52,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:57:52,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:57:52,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:57:52,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:57:52,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:57:52,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:57:52,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:57:52,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:57:52,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:57:52,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:57:52,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:57:52,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:57:52,841 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:57:52,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:57:52,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:57:52,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:57:52,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:57:52,842 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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dfb89b316b35597df251f3cfe048e45df64ba9 [2021-10-13 07:57:53,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:57:53,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:57:53,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:57:53,148 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:57:53,149 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:57:53,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-13 07:57:53,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/341aca34d/8e6606da44684e9eb9947fcde2378aaf/FLAG6cfb87d55 [2021-10-13 07:57:53,736 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:57:53,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-13 07:57:53,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/341aca34d/8e6606da44684e9eb9947fcde2378aaf/FLAG6cfb87d55 [2021-10-13 07:57:54,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/341aca34d/8e6606da44684e9eb9947fcde2378aaf [2021-10-13 07:57:54,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:57:54,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:57:54,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:57:54,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:57:54,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:57:54,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23944051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54, skipping insertion in model container [2021-10-13 07:57:54,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:57:54,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:57:54,428 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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-13 07:57:54,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:57:54,439 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:57:54,459 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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-13 07:57:54,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:57:54,477 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:57:54,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54 WrapperNode [2021-10-13 07:57:54,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:57:54,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:57:54,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:57:54,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:57:54,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:57:54,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:57:54,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:57:54,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:57:54,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:57:54,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:57:54,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:57:54,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:57:54,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (1/1) ... [2021-10-13 07:57:54,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:57:54,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:57:54,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:57:54,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:57:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:57:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:57:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:57:54,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:57:55,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:57:55,056 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 07:57:55,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:57:55 BoogieIcfgContainer [2021-10-13 07:57:55,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:57:55,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:57:55,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:57:55,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:57:55,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:57:54" (1/3) ... [2021-10-13 07:57:55,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc16bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:57:55, skipping insertion in model container [2021-10-13 07:57:55,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:57:54" (2/3) ... [2021-10-13 07:57:55,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc16bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:57:55, skipping insertion in model container [2021-10-13 07:57:55,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:57:55" (3/3) ... [2021-10-13 07:57:55,070 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-10-13 07:57:55,077 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:57:55,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:57:55,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:57:55,170 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 07:57:55,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:57:55,202 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 07:57:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:57:55,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:57:55,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:57:55,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:57:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:57:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash 73805, now seen corresponding path program 1 times [2021-10-13 07:57:55,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:57:55,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676280962] [2021-10-13 07:57:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:57:55,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:57:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:57:55,448 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:57:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:57:55,530 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:57:55,536 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:57:55,537 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:57:55,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:57:55,550 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:57:55,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:57:55 BoogieIcfgContainer [2021-10-13 07:57:55,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:57:55,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:57:55,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:57:55,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:57:55,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:57:55" (3/4) ... [2021-10-13 07:57:55,585 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:57:55,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:57:55,590 INFO L168 Benchmark]: Toolchain (without parser) took 1453.14 ms. Allocated memory is still 151.0 MB. Free memory was 118.4 MB in the beginning and 95.7 MB in the end (delta: 22.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:57:55,591 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:57:55,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.07 ms. Allocated memory is still 151.0 MB. Free memory was 118.0 MB in the beginning and 125.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:57:55,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 123.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:57:55,596 INFO L168 Benchmark]: Boogie Preprocessor took 50.03 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 122.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:57:55,597 INFO L168 Benchmark]: RCFGBuilder took 465.91 ms. Allocated memory is still 151.0 MB. Free memory was 122.1 MB in the beginning and 109.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:57:55,599 INFO L168 Benchmark]: TraceAbstraction took 514.10 ms. Allocated memory is still 151.0 MB. Free memory was 109.1 MB in the beginning and 96.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:57:55,606 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 151.0 MB. Free memory was 96.1 MB in the beginning and 95.7 MB in the end (delta: 427.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:57:55,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.07 ms. Allocated memory is still 151.0 MB. Free memory was 118.0 MB in the beginning and 125.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 123.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.03 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 122.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 465.91 ms. Allocated memory is still 151.0 MB. Free memory was 122.1 MB in the beginning and 109.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 514.10 ms. Allocated memory is still 151.0 MB. Free memory was 109.1 MB in the beginning and 96.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 151.0 MB. Free memory was 96.1 MB in the beginning and 95.7 MB in the end (delta: 427.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 401.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.0ms SsaConstructionTime, 79.2ms 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 07:57:55,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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 07:57:58,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:57:58,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:57:58,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:57:58,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:57:58,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:57:58,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:57:58,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:57:58,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:57:58,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:57:58,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:57:58,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:57:58,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:57:58,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:57:58,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:57:58,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:57:58,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:57:58,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:57:58,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:57:58,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:57:58,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:57:58,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:57:58,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:57:58,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:57:58,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:57:58,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:57:58,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:57:58,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:57:58,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:57:58,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:57:58,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:57:58,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:57:58,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:57:58,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:57:58,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:57:58,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:57:58,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:57:58,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:57:58,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:57:58,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:57:58,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:57:58,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:57:58,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:57:58,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:57:58,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:57:58,600 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:57:58,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:57:58,601 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:57:58,601 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:57:58,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:57:58,602 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:57:58,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:57:58,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:57:58,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:57:58,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:57:58,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:57:58,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:57:58,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:57:58,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:57:58,605 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:57:58,605 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:57:58,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:57:58,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:57:58,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:57:58,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:57:58,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:57:58,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:57:58,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:57:58,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:57:58,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:57:58,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:57:58,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:57:58,609 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:57:58,609 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:57:58,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:57:58,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:57:58,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:57:58,610 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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dfb89b316b35597df251f3cfe048e45df64ba9 [2021-10-13 07:57:59,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:57:59,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:57:59,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:57:59,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:57:59,097 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:57:59,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-13 07:57:59,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/d6fe4734f/b530ec48ac4645d68afc02dd980d1854/FLAG6978d6e48 [2021-10-13 07:57:59,882 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:57:59,883 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-13 07:57:59,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/d6fe4734f/b530ec48ac4645d68afc02dd980d1854/FLAG6978d6e48 [2021-10-13 07:58:00,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/data/d6fe4734f/b530ec48ac4645d68afc02dd980d1854 [2021-10-13 07:58:00,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:58:00,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:58:00,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:00,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:58:00,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:58:00,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d1010a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00, skipping insertion in model container [2021-10-13 07:58:00,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:58:00,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:58:00,572 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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-13 07:58:00,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:00,671 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:58:00,717 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_d12b9607-c385-4976-bd4c-5a31b5d50b5d/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-13 07:58:00,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:00,746 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:58:00,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00 WrapperNode [2021-10-13 07:58:00,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:00,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:00,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:58:00,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:58:00,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:00,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:58:00,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:58:00,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:58:00,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:58:00,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:58:00,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:58:00,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:58:00,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (1/1) ... [2021-10-13 07:58:00,872 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:00,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:00,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:58:00,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:58:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:58:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:58:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:58:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:58:16,950 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:58:16,951 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 07:58:16,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:16 BoogieIcfgContainer [2021-10-13 07:58:16,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:58:16,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:58:16,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:58:16,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:58:16,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:58:00" (1/3) ... [2021-10-13 07:58:16,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53565639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:16, skipping insertion in model container [2021-10-13 07:58:16,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:00" (2/3) ... [2021-10-13 07:58:16,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53565639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:16, skipping insertion in model container [2021-10-13 07:58:16,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:16" (3/3) ... [2021-10-13 07:58:16,960 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-10-13 07:58:16,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:58:16,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:58:17,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:58:17,015 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 07:58:17,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:58:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:58:17,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:17,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:17,035 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:17,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-10-13 07:58:17,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:17,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305356091] [2021-10-13 07:58:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:17,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:17,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:17,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:17,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:58:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:20,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:58:20,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:20,496 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 07:58:20,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:20,605 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 07:58:20,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:20,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305356091] [2021-10-13 07:58:20,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305356091] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:20,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:20,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:58:20,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461513291] [2021-10-13 07:58:20,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:58:20,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:58:20,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:58:20,629 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:20,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:20,644 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-13 07:58:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:58:20,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 07:58:20,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:20,652 INFO L225 Difference]: With dead ends: 31 [2021-10-13 07:58:20,653 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:58:20,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:58:20,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:58:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 07:58:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-13 07:58:20,679 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-10-13 07:58:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:20,679 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-13 07:58:20,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-13 07:58:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:58:20,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:20,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:58:20,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:20,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:20,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:20,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-10-13 07:58:20,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:20,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531016916] [2021-10-13 07:58:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:20,887 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:20,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:20,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:20,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:58:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:58:53,241 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 08:02:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 08:02:09,440 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 08:02:09,440 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 08:02:09,441 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:02:09,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:02:09,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:02:09,648 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:02:09,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:02:09 BoogieIcfgContainer [2021-10-13 08:02:09,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:02:09,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:02:09,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:02:09,679 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:02:09,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:16" (3/4) ... [2021-10-13 08:02:09,681 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 08:02:09,722 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:02:09,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:02:09,725 INFO L168 Benchmark]: Toolchain (without parser) took 249476.27 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 28.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:09,725 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 49.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:02:09,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.06 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 50.9 MB in the end (delta: -160.6 kB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:09,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.59 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:02:09,727 INFO L168 Benchmark]: Boogie Preprocessor took 49.06 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 47.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:09,728 INFO L168 Benchmark]: RCFGBuilder took 16089.77 ms. Allocated memory is still 69.2 MB. Free memory was 47.5 MB in the beginning and 37.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:09,729 INFO L168 Benchmark]: TraceAbstraction took 232723.42 ms. Allocated memory is still 69.2 MB. Free memory was 36.9 MB in the beginning and 30.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:09,729 INFO L168 Benchmark]: Witness Printer took 44.71 ms. Allocated memory is still 69.2 MB. Free memory was 30.8 MB in the beginning and 28.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:02:09,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 49.2 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 495.06 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 50.9 MB in the end (delta: -160.6 kB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.59 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.06 ms. Allocated memory is still 69.2 MB. Free memory was 49.1 MB in the beginning and 47.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 16089.77 ms. Allocated memory is still 69.2 MB. Free memory was 47.5 MB in the beginning and 37.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 232723.42 ms. Allocated memory is still 69.2 MB. Free memory was 36.9 MB in the beginning and 30.8 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Witness Printer took 44.71 ms. Allocated memory is still 69.2 MB. Free memory was 30.8 MB in the beginning and 28.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 232638.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.8ms, AutomataDifference: 40.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 35368.5ms SatisfiabilityAnalysisTime, 405.2ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 08:02:09,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d12b9607-c385-4976-bd4c-5a31b5d50b5d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...