./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea ................................................................................................................................................................................................................................................................................... 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_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea ................................................................................................................................................................................................................................................................................................. 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-e943c26 [2021-10-21 20:08:45,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:08:45,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:08:45,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:08:45,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:08:45,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:08:45,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:08:45,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:08:45,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:08:45,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:08:45,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:08:45,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:08:45,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:08:45,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:08:45,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:08:45,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:08:45,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:08:45,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:08:45,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:08:45,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:08:45,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:08:45,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:08:45,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:08:45,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:08:45,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:08:45,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:08:45,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:08:45,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:08:45,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:08:45,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:08:45,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:08:45,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:08:45,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:08:45,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:08:45,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:08:45,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:08:45,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:08:45,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:08:45,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:08:45,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:08:45,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:08:45,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:08:45,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:08:45,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:08:45,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:08:45,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:08:45,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:08:45,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:08:45,357 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:08:45,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:08:45,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:08:45,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:08:45,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:08:45,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:08:45,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:08:45,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:08:45,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:08:45,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:08:45,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:08:45,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:08:45,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:08:45,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:08:45,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:08:45,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:08:45,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:45,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:08:45,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:08:45,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:08:45,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:08:45,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:08:45,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:08:45,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:08:45,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:08:45,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:08:45,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea [2021-10-21 20:08:45,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:08:45,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:08:45,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:08:45,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:08:45,673 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:08:45,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-21 20:08:45,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/870d0efed/958cdca0f26345f99ce893e10e41e610/FLAGf169a3cff [2021-10-21 20:08:46,228 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:08:46,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-21 20:08:46,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/870d0efed/958cdca0f26345f99ce893e10e41e610/FLAGf169a3cff [2021-10-21 20:08:46,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/870d0efed/958cdca0f26345f99ce893e10e41e610 [2021-10-21 20:08:46,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:08:46,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:08:46,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:46,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:08:46,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:08:46,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a514615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46, skipping insertion in model container [2021-10-21 20:08:46,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:08:46,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:08:46,730 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_4e303dc4-0d60-426b-ab8b-cb1753318c0f/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-21 20:08:46,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:46,744 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:08:46,764 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_4e303dc4-0d60-426b-ab8b-cb1753318c0f/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-21 20:08:46,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:46,779 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:08:46,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46 WrapperNode [2021-10-21 20:08:46,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:46,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:46,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:08:46,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:08:46,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:46,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:08:46,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:08:46,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:08:46,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:08:46,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:08:46,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:08:46,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:08:46,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (1/1) ... [2021-10-21 20:08:46,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:46,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:46,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:08:46,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:08:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:08:46,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:08:46,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:08:46,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:08:47,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:08:47,142 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 20:08:47,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:47 BoogieIcfgContainer [2021-10-21 20:08:47,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:08:47,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:08:47,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:08:47,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:08:47,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:08:46" (1/3) ... [2021-10-21 20:08:47,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5632d1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:47, skipping insertion in model container [2021-10-21 20:08:47,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:46" (2/3) ... [2021-10-21 20:08:47,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5632d1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:47, skipping insertion in model container [2021-10-21 20:08:47,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:47" (3/3) ... [2021-10-21 20:08:47,157 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-10-21 20:08:47,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:08:47,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:08:47,219 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:08:47,233 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-21 20:08:47,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:08:47,251 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) [2021-10-21 20:08:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:08:47,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:47,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:47,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-21 20:08:47,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:47,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525398406] [2021-10-21 20:08:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:47,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:47,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:47,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525398406] [2021-10-21 20:08:47,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525398406] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:08:47,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:08:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:08:47,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925009628] [2021-10-21 20:08:47,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:08:47,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:08:47,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:08:47,578 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) [2021-10-21 20:08:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:47,592 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-21 20:08:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:08:47,593 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 [2021-10-21 20:08:47,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:47,608 INFO L225 Difference]: With dead ends: 23 [2021-10-21 20:08:47,608 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:08:47,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:08:47,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:08:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:08:47,638 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) [2021-10-21 20:08:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-21 20:08:47,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-21 20:08:47,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:47,640 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-21 20:08:47,641 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) [2021-10-21 20:08:47,641 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-21 20:08:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:08:47,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:47,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:47,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:08:47,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-21 20:08:47,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:47,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093292956] [2021-10-21 20:08:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:47,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:08:47,665 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:08:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:08:47,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:08:47,710 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:08:47,712 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:08:47,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:08:47,725 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:08:47,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:08:47 BoogieIcfgContainer [2021-10-21 20:08:47,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:08:47,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:08:47,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:08:47,747 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:08:47,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:47" (3/4) ... [2021-10-21 20:08:47,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:08:47,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:08:47,752 INFO L168 Benchmark]: Toolchain (without parser) took 1199.22 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 65.0 MB in the beginning and 76.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:47,753 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:47,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.20 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 54.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:47,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 88.1 MB. Free memory was 54.7 MB in the beginning and 53.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:47,755 INFO L168 Benchmark]: Boogie Preprocessor took 53.10 ms. Allocated memory is still 88.1 MB. Free memory was 53.2 MB in the beginning and 52.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:47,755 INFO L168 Benchmark]: RCFGBuilder took 264.71 ms. Allocated memory is still 88.1 MB. Free memory was 52.1 MB in the beginning and 43.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:47,756 INFO L168 Benchmark]: TraceAbstraction took 600.04 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.0 MB in the beginning and 76.5 MB in the end (delta: -33.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:47,757 INFO L168 Benchmark]: Witness Printer took 3.39 ms. Allocated memory is still 107.0 MB. Free memory was 76.5 MB in the beginning and 76.0 MB in the end (delta: 537.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:47,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.20 ms. Allocated memory is still 88.1 MB. Free memory was 64.7 MB in the beginning and 54.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 88.1 MB. Free memory was 54.7 MB in the beginning and 53.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.10 ms. Allocated memory is still 88.1 MB. Free memory was 53.2 MB in the beginning and 52.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 264.71 ms. Allocated memory is still 88.1 MB. Free memory was 52.1 MB in the beginning and 43.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 600.04 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.0 MB in the beginning and 76.5 MB in the end (delta: -33.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.39 ms. Allocated memory is still 107.0 MB. Free memory was 76.5 MB in the beginning and 76.0 MB in the end (delta: 537.3 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 33. 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 502.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 13.2ms, AutomataDifference: 71.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.0ms, 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, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.3ms SsaConstructionTime, 51.9ms SatisfiabilityAnalysisTime, 106.1ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces [2021-10-21 20:08:47,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 20:08:50,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:08:50,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:08:50,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:08:50,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:08:50,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:08:50,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:08:50,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:08:50,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:08:50,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:08:50,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:08:50,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:08:50,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:08:50,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:08:50,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:08:50,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:08:50,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:08:50,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:08:50,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:08:50,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:08:50,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:08:50,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:08:50,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:08:50,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:08:50,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:08:50,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:08:50,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:08:50,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:08:50,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:08:50,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:08:50,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:08:50,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:08:50,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:08:50,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:08:50,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:08:50,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:08:50,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:08:50,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:08:50,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:08:50,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:08:50,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:08:50,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:08:50,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:08:50,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:08:50,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:08:50,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:08:50,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:08:50,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:08:50,628 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:08:50,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:08:50,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:08:50,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:08:50,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:08:50,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:08:50,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:08:50,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:08:50,631 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:08:50,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:08:50,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:08:50,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:08:50,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:08:50,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:08:50,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:08:50,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:08:50,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:08:50,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:50,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:08:50,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:08:50,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:08:50,635 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:08:50,635 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:08:50,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:08:50,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:08:50,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:08:50,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:08:50,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:08:50,637 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_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea [2021-10-21 20:08:51,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:08:51,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:08:51,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:08:51,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:08:51,092 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:08:51,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-21 20:08:51,178 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/e8dfee6ea/9f2e37f7bc864debb807ebdd94b4c8ac/FLAG2c3dfe079 [2021-10-21 20:08:51,688 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:08:51,689 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-21 20:08:51,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/e8dfee6ea/9f2e37f7bc864debb807ebdd94b4c8ac/FLAG2c3dfe079 [2021-10-21 20:08:52,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/data/e8dfee6ea/9f2e37f7bc864debb807ebdd94b4c8ac [2021-10-21 20:08:52,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:08:52,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:08:52,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:52,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:08:52,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:08:52,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1958a0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52, skipping insertion in model container [2021-10-21 20:08:52,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:08:52,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:08:52,348 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_4e303dc4-0d60-426b-ab8b-cb1753318c0f/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-21 20:08:52,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:52,365 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:08:52,391 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_4e303dc4-0d60-426b-ab8b-cb1753318c0f/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-21 20:08:52,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:52,433 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:08:52,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52 WrapperNode [2021-10-21 20:08:52,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:52,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:52,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:08:52,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:08:52,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:52,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:08:52,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:08:52,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:08:52,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:08:52,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:08:52,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:08:52,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:08:52,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (1/1) ... [2021-10-21 20:08:52,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:52,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:52,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:08:52,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:08:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:08:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:08:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:08:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:08:58,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:08:58,558 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 20:08:58,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:58 BoogieIcfgContainer [2021-10-21 20:08:58,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:08:58,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:08:58,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:08:58,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:08:58,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:08:52" (1/3) ... [2021-10-21 20:08:58,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60931369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:58, skipping insertion in model container [2021-10-21 20:08:58,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:52" (2/3) ... [2021-10-21 20:08:58,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60931369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:58, skipping insertion in model container [2021-10-21 20:08:58,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:58" (3/3) ... [2021-10-21 20:08:58,571 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-10-21 20:08:58,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:08:58,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:08:58,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:08:58,643 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-10-21 20:08:58,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:08:58,670 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) [2021-10-21 20:08:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:08:58,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:58,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:58,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:58,690 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-21 20:08:58,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:58,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561726842] [2021-10-21 20:08:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:58,710 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:58,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:58,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:09:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:09:00,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:09:00,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:09:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:00,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:09:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:09:00,489 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:09:00,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561726842] [2021-10-21 20:09:00,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561726842] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:09:00,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:09:00,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:09:00,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536395442] [2021-10-21 20:09:00,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:09:00,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:09:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:09:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:09:00,533 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) [2021-10-21 20:09:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:09:00,549 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-21 20:09:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:09:00,553 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 [2021-10-21 20:09:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:09:00,564 INFO L225 Difference]: With dead ends: 23 [2021-10-21 20:09:00,565 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:09:00,568 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 [2021-10-21 20:09:00,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:09:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:09:00,598 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) [2021-10-21 20:09:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-21 20:09:00,601 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-21 20:09:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:09:00,601 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-21 20:09:00,602 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) [2021-10-21 20:09:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-21 20:09:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:09:00,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:09:00,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:09:00,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-21 20:09:00,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:09:00,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:09:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:09:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-21 20:09:00,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:09:00,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595297190] [2021-10-21 20:09:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:09:00,829 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:09:00,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:09:00,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:09:00,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:09:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:09:04,152 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:09:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:09:09,807 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 20:09:09,809 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:09:09,811 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:09:09,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:09:10,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:09:10,018 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:09:10,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:09:10 BoogieIcfgContainer [2021-10-21 20:09:10,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:09:10,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:09:10,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:09:10,040 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:09:10,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:58" (3/4) ... [2021-10-21 20:09:10,043 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:09:10,080 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:09:10,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:09:10,083 INFO L168 Benchmark]: Toolchain (without parser) took 17996.86 ms. Allocated memory is still 86.0 MB. Free memory was 64.7 MB in the beginning and 56.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:09:10,084 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:09:10,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.17 ms. Allocated memory is still 86.0 MB. Free memory was 64.5 MB in the beginning and 70.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:09:10,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 86.0 MB. Free memory was 70.1 MB in the beginning and 68.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:09:10,086 INFO L168 Benchmark]: Boogie Preprocessor took 53.10 ms. Allocated memory is still 86.0 MB. Free memory was 68.7 MB in the beginning and 67.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:09:10,086 INFO L168 Benchmark]: RCFGBuilder took 6010.71 ms. Allocated memory is still 86.0 MB. Free memory was 67.3 MB in the beginning and 57.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:09:10,087 INFO L168 Benchmark]: TraceAbstraction took 11476.31 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 57.7 MB in the end (delta: -250.9 kB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:09:10,088 INFO L168 Benchmark]: Witness Printer took 40.98 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 56.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:09:10,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.17 ms. Allocated memory is still 86.0 MB. Free memory was 64.5 MB in the beginning and 70.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 86.0 MB. Free memory was 70.1 MB in the beginning and 68.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.10 ms. Allocated memory is still 86.0 MB. Free memory was 68.7 MB in the beginning and 67.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6010.71 ms. Allocated memory is still 86.0 MB. Free memory was 67.3 MB in the beginning and 57.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11476.31 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 57.7 MB in the end (delta: -250.9 kB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 40.98 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 56.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11385.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 19.7ms, AutomataDifference: 63.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, 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: 17.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.2ms SsaConstructionTime, 4712.3ms SatisfiabilityAnalysisTime, 254.6ms 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! [2021-10-21 20:09:10,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e303dc4-0d60-426b-ab8b-cb1753318c0f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...