./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI --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 80de2bcb413ca82cf36ee5cabb22cc23421a986b .................................................................................................................................................................................................................................................... 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_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI --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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ............................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 02:26:59,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:59,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:59,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:59,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:59,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:59,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:59,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:59,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:59,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:59,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:59,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:59,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:59,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:59,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:59,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:59,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:59,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:59,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:59,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:59,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:59,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:59,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:59,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:59,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:59,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:59,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:59,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:59,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:59,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:59,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:59,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:59,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:59,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:59,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:59,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:59,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:59,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:59,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:00,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:00,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:00,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:00,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:00,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:00,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:00,039 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:00,039 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:00,039 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:00,040 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:00,040 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:00,040 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:00,040 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:00,047 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:00,048 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:00,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:00,048 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:00,049 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:00,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:00,050 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:00,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:00,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:00,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:00,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:00,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:00,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:00,051 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:00,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:00,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:00,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:00,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:00,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:00,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:00,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:00,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:00,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:00,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:00,055 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:00,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:00,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:00,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:00,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:00,056 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_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2021-10-11 02:27:00,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:00,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:00,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:00,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:00,368 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:00,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-11 02:27:00,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/9c4e32c31/db62ee837d674a2297638bc4d5f9ed31/FLAGeae8a9cf9 [2021-10-11 02:27:00,882 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:00,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-11 02:27:00,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/9c4e32c31/db62ee837d674a2297638bc4d5f9ed31/FLAGeae8a9cf9 [2021-10-11 02:27:01,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/9c4e32c31/db62ee837d674a2297638bc4d5f9ed31 [2021-10-11 02:27:01,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:01,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:01,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:01,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:01,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:01,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687e5f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01, skipping insertion in model container [2021-10-11 02:27:01,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:01,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:01,510 WARN L226 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_0ba21714-3d2c-4802-bab9-f0cef7294f53/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-11 02:27:01,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:01,523 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:01,541 WARN L226 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_0ba21714-3d2c-4802-bab9-f0cef7294f53/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-11 02:27:01,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:01,556 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:01,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01 WrapperNode [2021-10-11 02:27:01,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:01,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:01,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:01,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:01,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:01,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:01,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:01,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:01,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... [2021-10-11 02:27:01,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:01,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:01,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:01,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:01,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:01,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:01,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:01,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:02,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:02,068 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-11 02:27:02,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:02 BoogieIcfgContainer [2021-10-11 02:27:02,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:02,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:02,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:02,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:01" (1/3) ... [2021-10-11 02:27:02,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5740bd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:02, skipping insertion in model container [2021-10-11 02:27:02,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:01" (2/3) ... [2021-10-11 02:27:02,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5740bd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:02, skipping insertion in model container [2021-10-11 02:27:02,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:02" (3/3) ... [2021-10-11 02:27:02,078 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-10-11 02:27:02,092 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:02,095 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:02,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:02,128 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:02,129 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:02,129 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:02,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:02,129 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:02,129 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:02,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:02,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:27:02,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:27:02,150 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:02,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:27:02,151 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:02,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:02,157 INFO L82 PathProgramCache]: Analyzing trace with hash 67911, now seen corresponding path program 1 times [2021-10-11 02:27:02,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:02,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024541143] [2021-10-11 02:27:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:02,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:02,293 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:02,313 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:02,314 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:02,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:02,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:02 BoogieIcfgContainer [2021-10-11 02:27:02,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:02,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:02,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:02,340 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:02,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:02" (3/4) ... [2021-10-11 02:27:02,354 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:27:02,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:02,358 INFO L168 Benchmark]: Toolchain (without parser) took 1095.45 ms. Allocated memory is still 102.8 MB. Free memory was 60.6 MB in the beginning and 42.7 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:02,359 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:02,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.72 ms. Allocated memory is still 102.8 MB. Free memory was 60.4 MB in the beginning and 75.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:02,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.43 ms. Allocated memory is still 102.8 MB. Free memory was 75.6 MB in the beginning and 74.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:02,364 INFO L168 Benchmark]: Boogie Preprocessor took 22.84 ms. Allocated memory is still 102.8 MB. Free memory was 74.1 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:02,366 INFO L168 Benchmark]: RCFGBuilder took 451.29 ms. Allocated memory is still 102.8 MB. Free memory was 72.9 MB in the beginning and 55.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:02,367 INFO L168 Benchmark]: TraceAbstraction took 265.35 ms. Allocated memory is still 102.8 MB. Free memory was 54.9 MB in the beginning and 43.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:02,368 INFO L168 Benchmark]: Witness Printer took 15.09 ms. Allocated memory is still 102.8 MB. Free memory was 43.0 MB in the beginning and 42.7 MB in the end (delta: 334.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:02,376 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 102.8 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.72 ms. Allocated memory is still 102.8 MB. Free memory was 60.4 MB in the beginning and 75.6 MB in the end (delta: -15.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.43 ms. Allocated memory is still 102.8 MB. Free memory was 75.6 MB in the beginning and 74.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.84 ms. Allocated memory is still 102.8 MB. Free memory was 74.1 MB in the beginning and 72.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 451.29 ms. Allocated memory is still 102.8 MB. Free memory was 72.9 MB in the beginning and 55.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 265.35 ms. Allocated memory is still 102.8 MB. Free memory was 54.9 MB in the beginning and 43.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 15.09 ms. Allocated memory is still 102.8 MB. Free memory was 43.0 MB in the beginning and 42.7 MB in the end (delta: 334.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:04,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:04,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:04,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:04,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:04,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:04,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:04,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:04,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:04,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:04,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:04,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:04,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:04,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:04,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:04,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:04,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:04,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:04,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:04,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:04,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:04,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:04,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:04,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:04,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:04,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:04,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:04,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:04,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:04,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:04,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:04,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:04,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:04,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:04,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:04,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:05,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:05,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:05,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:05,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:05,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:05,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:27:05,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:05,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:05,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:05,055 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:05,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:05,055 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:05,055 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:05,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:05,056 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:05,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:05,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:05,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:05,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:05,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:05,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:05,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:05,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:05,060 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:27:05,061 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:27:05,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:05,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:05,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:05,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:05,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:05,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:27:05,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:05,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:05,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:05,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:05,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:05,064 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:27:05,064 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:27:05,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:05,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:05,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:05,065 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_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2021-10-11 02:27:05,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:05,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:05,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:05,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:05,478 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:05,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-11 02:27:05,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/40ec91343/839530fec0c14d9d810c0cbdbb8568ae/FLAG4b27a0ac8 [2021-10-11 02:27:06,126 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:06,127 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-10-11 02:27:06,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/40ec91343/839530fec0c14d9d810c0cbdbb8568ae/FLAG4b27a0ac8 [2021-10-11 02:27:06,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/data/40ec91343/839530fec0c14d9d810c0cbdbb8568ae [2021-10-11 02:27:06,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:06,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:06,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:06,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:06,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:06,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3603ed5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06, skipping insertion in model container [2021-10-11 02:27:06,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:06,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:06,639 WARN L226 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_0ba21714-3d2c-4802-bab9-f0cef7294f53/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-11 02:27:06,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:06,657 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:06,677 WARN L226 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_0ba21714-3d2c-4802-bab9-f0cef7294f53/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-10-11 02:27:06,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:06,694 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:06,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06 WrapperNode [2021-10-11 02:27:06,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:06,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:06,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:06,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:06,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:06,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:06,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:06,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:06,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:06,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:06,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:06,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:06,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:06,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:27:06,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:06,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:06,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:18,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:18,417 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-11 02:27:18,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:18 BoogieIcfgContainer [2021-10-11 02:27:18,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:18,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:18,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:18,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:18,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:06" (1/3) ... [2021-10-11 02:27:18,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754e32c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:18, skipping insertion in model container [2021-10-11 02:27:18,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (2/3) ... [2021-10-11 02:27:18,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754e32c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:18, skipping insertion in model container [2021-10-11 02:27:18,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:18" (3/3) ... [2021-10-11 02:27:18,427 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-10-11 02:27:18,441 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:18,445 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:18,456 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:18,489 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:18,490 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:18,490 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:18,490 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:18,490 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:18,491 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:18,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:18,491 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-10-11 02:27:18,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:18,509 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:18,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:18,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:18,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-10-11 02:27:18,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:18,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116555039] [2021-10-11 02:27:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:21,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:27:21,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:21,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:21,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116555039] [2021-10-11 02:27:21,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:21,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:21,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476698215] [2021-10-11 02:27:21,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:21,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:21,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:21,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:21,245 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2021-10-11 02:27:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:21,266 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-11 02:27:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:21,267 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:27:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:21,287 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:27:21,296 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:27:21,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:27:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:27:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:27:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-11 02:27:21,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-10-11 02:27:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:21,337 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-11 02:27:21,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-11 02:27:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:21,338 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:21,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:21,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:27:21,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-10-11 02:27:21,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:21,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699102590] [2021-10-11 02:27:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:27:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:38,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:47,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:48,182 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:27:48,184 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:48,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:27:48,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:48 BoogieIcfgContainer [2021-10-11 02:27:48,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:48,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:48,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:48,418 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:48,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:18" (3/4) ... [2021-10-11 02:27:48,423 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:27:48,473 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ba21714-3d2c-4802-bab9-f0cef7294f53/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:48,473 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:48,476 INFO L168 Benchmark]: Toolchain (without parser) took 42020.82 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 45.7 MB in the beginning and 67.5 MB in the end (delta: -21.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,476 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:48,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.23 ms. Allocated memory is still 65.0 MB. Free memory was 45.6 MB in the beginning and 34.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.80 ms. Allocated memory is still 65.0 MB. Free memory was 34.8 MB in the beginning and 48.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,479 INFO L168 Benchmark]: Boogie Preprocessor took 29.88 ms. Allocated memory is still 65.0 MB. Free memory was 48.7 MB in the beginning and 47.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:48,479 INFO L168 Benchmark]: RCFGBuilder took 11619.03 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 34.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,480 INFO L168 Benchmark]: TraceAbstraction took 29996.41 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 34.3 MB in the beginning and 42.8 MB in the end (delta: -8.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,481 INFO L168 Benchmark]: Witness Printer took 56.48 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 67.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 240.23 ms. Allocated memory is still 65.0 MB. Free memory was 45.6 MB in the beginning and 34.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.80 ms. Allocated memory is still 65.0 MB. Free memory was 34.8 MB in the beginning and 48.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.88 ms. Allocated memory is still 65.0 MB. Free memory was 48.7 MB in the beginning and 47.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11619.03 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 34.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29996.41 ms. Allocated memory was 65.0 MB in the beginning and 86.0 MB in the end (delta: 21.0 MB). Free memory was 34.3 MB in the beginning and 42.8 MB in the end (delta: -8.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 56.48 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 67.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 19.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! Received shutdown request...