./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90741c14eee92622488e9390ec37eb8bb78b90b3 ................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90741c14eee92622488e9390ec37eb8bb78b90b3 .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:27:07,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:27:07,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:27:07,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:27:07,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:27:07,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:27:07,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:27:07,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:27:07,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:27:07,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:27:07,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:27:07,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:27:07,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:27:07,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:27:07,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:27:07,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:27:07,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:27:07,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:27:07,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:27:07,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:27:07,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:27:07,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:27:07,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:27:07,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:27:08,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:27:08,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:27:08,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:27:08,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:27:08,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:27:08,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:27:08,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:27:08,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:27:08,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:27:08,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:27:08,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:27:08,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:27:08,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:27:08,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:27:08,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:27:08,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:27:08,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:27:08,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:27:08,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:27:08,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:27:08,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:27:08,075 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:27:08,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:27:08,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:27:08,076 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:27:08,076 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:27:08,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:27:08,076 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:27:08,078 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:27:08,078 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:27:08,078 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:27:08,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:27:08,079 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:27:08,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:27:08,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:27:08,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:27:08,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:27:08,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:27:08,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:27:08,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:27:08,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:27:08,082 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:27:08,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:27:08,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:27:08,083 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:27:08,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:27:08,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:27:08,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:27:08,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:08,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:27:08,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:27:08,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:27:08,087 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:27:08,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:27:08,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:27:08,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:27:08,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:27:08,088 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_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2021-10-16 02:27:08,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:27:08,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:27:08,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:27:08,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:27:08,436 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:27:08,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-16 02:27:08,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/b739b6d13/496d493ce5014c20b40ddd0194a7130e/FLAG4390b8539 [2021-10-16 02:27:09,043 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:27:09,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-16 02:27:09,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/b739b6d13/496d493ce5014c20b40ddd0194a7130e/FLAG4390b8539 [2021-10-16 02:27:09,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/b739b6d13/496d493ce5014c20b40ddd0194a7130e [2021-10-16 02:27:09,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:27:09,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:27:09,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:09,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:27:09,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:27:09,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2739ecd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09, skipping insertion in model container [2021-10-16 02:27:09,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:27:09,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:27:09,707 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_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-16 02:27:09,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:09,722 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:27:09,745 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_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-16 02:27:09,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:09,763 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:27:09,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09 WrapperNode [2021-10-16 02:27:09,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:09,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:09,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:27:09,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:27:09,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:09,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:27:09,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:27:09,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:27:09,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:27:09,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:27:09,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:27:09,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:27:09,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (1/1) ... [2021-10-16 02:27:09,857 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:09,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:27:09,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:27:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:27:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:27:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:27:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:27:10,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:27:10,236 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 02:27:10,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:10 BoogieIcfgContainer [2021-10-16 02:27:10,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:27:10,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:27:10,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:27:10,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:27:10,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:27:09" (1/3) ... [2021-10-16 02:27:10,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e4c72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:10, skipping insertion in model container [2021-10-16 02:27:10,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:09" (2/3) ... [2021-10-16 02:27:10,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e4c72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:10, skipping insertion in model container [2021-10-16 02:27:10,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:10" (3/3) ... [2021-10-16 02:27:10,250 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-16 02:27:10,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:27:10,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:27:10,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:27:10,322 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 [2021-10-16 02:27:10,338 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:27:10,364 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) [2021-10-16 02:27:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:27:10,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:10,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:27:10,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:10,379 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-16 02:27:10,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:27:10,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750321175] [2021-10-16 02:27:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:10,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:27:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:27:10,532 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:27:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:27:10,598 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:27:10,600 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:27:10,602 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:27:10,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:27:10,613 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:27:10,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:27:10 BoogieIcfgContainer [2021-10-16 02:27:10,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:27:10,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:27:10,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:27:10,649 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:27:10,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:10" (3/4) ... [2021-10-16 02:27:10,654 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:27:10,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:27:10,662 INFO L168 Benchmark]: Toolchain (without parser) took 1208.21 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 48.4 MB in the beginning and 66.4 MB in the end (delta: -18.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,663 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:10,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.55 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 48.2 MB in the beginning and 94.1 MB in the end (delta: -45.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.62 ms. Allocated memory is still 119.5 MB. Free memory was 94.1 MB in the beginning and 92.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,669 INFO L168 Benchmark]: Boogie Preprocessor took 25.99 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 91.5 MB in the end (delta: 990.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:10,670 INFO L168 Benchmark]: RCFGBuilder took 397.79 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 80.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,681 INFO L168 Benchmark]: TraceAbstraction took 399.95 ms. Allocated memory is still 119.5 MB. Free memory was 79.5 MB in the beginning and 66.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,681 INFO L168 Benchmark]: Witness Printer took 6.96 ms. Allocated memory is still 119.5 MB. Free memory was 66.9 MB in the beginning and 66.4 MB in the end (delta: 486.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:10,689 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 86.0 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.55 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 48.2 MB in the beginning and 94.1 MB in the end (delta: -45.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.62 ms. Allocated memory is still 119.5 MB. Free memory was 94.1 MB in the beginning and 92.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.99 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 91.5 MB in the end (delta: 990.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 397.79 ms. Allocated memory is still 119.5 MB. Free memory was 91.5 MB in the beginning and 80.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 399.95 ms. Allocated memory is still 119.5 MB. Free memory was 79.5 MB in the beginning and 66.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.96 ms. Allocated memory is still 119.5 MB. Free memory was 66.9 MB in the beginning and 66.4 MB in the end (delta: 486.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 299.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 21.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.3ms, 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: 7.8ms SsaConstructionTime, 53.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:27:10,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:27:13,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:27:13,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:27:13,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:27:13,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:27:13,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:27:13,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:27:13,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:27:13,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:27:13,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:27:13,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:27:13,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:27:13,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:27:13,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:27:13,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:27:13,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:27:13,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:27:13,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:27:13,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:27:13,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:27:13,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:27:13,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:27:13,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:27:13,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:27:13,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:27:13,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:27:13,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:27:13,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:27:13,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:27:13,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:27:13,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:27:13,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:27:13,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:27:13,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:27:13,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:27:13,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:27:13,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:27:13,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:27:13,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:27:13,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:27:13,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:27:13,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:27:13,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:27:13,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:27:13,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:27:13,668 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:27:13,669 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:27:13,669 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:27:13,669 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:27:13,670 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:27:13,670 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:27:13,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:27:13,671 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:27:13,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:27:13,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:27:13,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:27:13,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:27:13,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:27:13,673 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:27:13,673 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:27:13,674 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:27:13,674 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:27:13,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:27:13,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:27:13,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:27:13,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:27:13,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:27:13,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:27:13,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:13,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:27:13,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:27:13,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:27:13,677 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:27:13,678 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:13,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:27:13,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:27:13,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:27:13,679 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_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2021-10-16 02:27:14,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:27:14,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:27:14,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:27:14,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:27:14,229 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:27:14,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-16 02:27:14,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/d9951f0b9/fb99c4962c8a4133bbf625e5896296f7/FLAG65e331306 [2021-10-16 02:27:14,878 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:27:14,879 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-16 02:27:14,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/d9951f0b9/fb99c4962c8a4133bbf625e5896296f7/FLAG65e331306 [2021-10-16 02:27:15,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/data/d9951f0b9/fb99c4962c8a4133bbf625e5896296f7 [2021-10-16 02:27:15,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:27:15,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:27:15,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:15,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:27:15,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:27:15,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbfb3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15, skipping insertion in model container [2021-10-16 02:27:15,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:27:15,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:27:15,577 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_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-16 02:27:15,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:15,612 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:27:15,675 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_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-16 02:27:15,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:15,721 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:27:15,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15 WrapperNode [2021-10-16 02:27:15,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:15,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:15,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:27:15,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:27:15,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:15,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:27:15,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:27:15,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:27:15,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:27:15,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:27:15,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:27:15,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:27:15,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (1/1) ... [2021-10-16 02:27:15,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:15,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:15,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:27:15,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:27:15,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:27:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:27:15,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:27:15,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:27:22,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:27:22,942 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-16 02:27:22,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:22 BoogieIcfgContainer [2021-10-16 02:27:22,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:27:22,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:27:22,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:27:22,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:27:22,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:27:15" (1/3) ... [2021-10-16 02:27:22,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c2969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:22, skipping insertion in model container [2021-10-16 02:27:22,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:15" (2/3) ... [2021-10-16 02:27:22,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c2969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:22, skipping insertion in model container [2021-10-16 02:27:22,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:22" (3/3) ... [2021-10-16 02:27:22,955 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-16 02:27:22,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:27:22,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:27:23,036 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:27:23,044 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 [2021-10-16 02:27:23,044 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:27:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:27:23,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:23,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:23,066 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:23,073 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-16 02:27:23,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:23,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282001761] [2021-10-16 02:27:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:23,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:23,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:23,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:23,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:27:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:24,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:27:25,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:25,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:25,158 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:25,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282001761] [2021-10-16 02:27:25,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282001761] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:25,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:25,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:27:25,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161472277] [2021-10-16 02:27:25,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:27:25,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:27:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:27:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:27:25,187 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:25,202 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-16 02:27:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:27:25,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:27:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:25,212 INFO L225 Difference]: With dead ends: 23 [2021-10-16 02:27:25,213 INFO L226 Difference]: Without dead ends: 9 [2021-10-16 02:27:25,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:27:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-16 02:27:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-16 02:27:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-16 02:27:25,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-16 02:27:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:25,248 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-16 02:27:25,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-16 02:27:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:27:25,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:25,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:25,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:27:25,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:27:25,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:25,451 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-16 02:27:25,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:25,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224784459] [2021-10-16 02:27:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:25,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:25,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:25,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:28:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:28:22,746 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:28:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:28:26,566 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:28:26,566 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:28:26,568 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:28:26,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:28:26,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:28:26,775 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:28:26,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:28:26 BoogieIcfgContainer [2021-10-16 02:28:26,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:28:26,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:28:26,803 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:28:26,803 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:28:26,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:22" (3/4) ... [2021-10-16 02:28:26,813 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:28:26,848 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:28:26,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:28:26,850 INFO L168 Benchmark]: Toolchain (without parser) took 71584.60 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 29.3 MB in the beginning and 54.3 MB in the end (delta: -25.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:26,851 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 52.4 MB. Free memory was 33.0 MB in the beginning and 32.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:28:26,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.57 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 29.1 MB in the beginning and 56.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:26,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.48 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 54.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:28:26,853 INFO L168 Benchmark]: Boogie Preprocessor took 62.16 ms. Allocated memory is still 73.4 MB. Free memory was 54.8 MB in the beginning and 53.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:26,854 INFO L168 Benchmark]: RCFGBuilder took 7079.06 ms. Allocated memory is still 73.4 MB. Free memory was 53.5 MB in the beginning and 44.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:26,855 INFO L168 Benchmark]: TraceAbstraction took 63855.39 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 35.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:26,855 INFO L168 Benchmark]: Witness Printer took 45.67 ms. Allocated memory is still 73.4 MB. Free memory was 35.7 MB in the beginning and 54.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:26,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 52.4 MB. Free memory was 33.0 MB in the beginning and 32.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 454.57 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 29.1 MB in the beginning and 56.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.48 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 54.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.16 ms. Allocated memory is still 73.4 MB. Free memory was 54.8 MB in the beginning and 53.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7079.06 ms. Allocated memory is still 73.4 MB. Free memory was 53.5 MB in the beginning and 44.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 63855.39 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 35.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Witness Printer took 45.67 ms. Allocated memory is still 73.4 MB. Free memory was 35.7 MB in the beginning and 54.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63741.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 46.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.3ms SsaConstructionTime, 59010.8ms SatisfiabilityAnalysisTime, 227.7ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:28:27,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace16ad3-ed7e-4da5-a4bb-84a37e02a25e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...