./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt --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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ................................................................................................................................................................................................................................................................................. 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_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt --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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-12 23:59:04,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:04,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:04,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:04,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:04,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:04,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:04,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:04,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:04,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:04,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:04,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:04,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:04,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:04,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:04,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:04,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:04,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:04,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:04,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:04,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:04,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:04,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:04,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:04,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:04,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:04,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:04,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:04,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:04,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:04,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:04,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:04,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:04,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:04,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:04,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:04,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:04,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:04,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:04,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:04,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:04,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-12 23:59:04,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:04,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:04,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:04,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:04,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:04,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:04,621 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:04,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:04,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:04,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:04,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:04,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:04,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-12 23:59:04,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:04,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-12 23:59:04,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:04,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-12 23:59:04,624 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:04,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-12 23:59:04,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:04,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:04,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:04,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:04,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:04,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:04,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-12 23:59:04,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-12 23:59:04,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-12 23:59:04,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-12 23:59:04,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:04,628 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_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2021-10-12 23:59:04,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:04,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:04,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:04,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:04,930 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:04,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-12 23:59:05,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/9d74a5d68/b786b3e0c52b4da598d6753871566ee1/FLAGf3b8f6643 [2021-10-12 23:59:05,436 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:05,436 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-12 23:59:05,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/9d74a5d68/b786b3e0c52b4da598d6753871566ee1/FLAGf3b8f6643 [2021-10-12 23:59:05,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/9d74a5d68/b786b3e0c52b4da598d6753871566ee1 [2021-10-12 23:59:05,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:05,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-12 23:59:05,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:05,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:05,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:05,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f175ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05, skipping insertion in model container [2021-10-12 23:59:05,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:05,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:05,657 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_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-12 23:59:05,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:05,678 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:05,695 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_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-12 23:59:05,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:05,709 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:05,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05 WrapperNode [2021-10-12 23:59:05,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:05,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:05,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-12 23:59:05,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-12 23:59:05,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:05,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:05,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:05,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:05,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:05,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:05,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:05,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:05,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (1/1) ... [2021-10-12 23:59:05,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:05,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:05,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:05,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-12 23:59:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-12 23:59:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:06,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:06,008 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-12 23:59:06,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:06 BoogieIcfgContainer [2021-10-12 23:59:06,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:06,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:06,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:06,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:06,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:05" (1/3) ... [2021-10-12 23:59:06,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628af8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:06, skipping insertion in model container [2021-10-12 23:59:06,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:05" (2/3) ... [2021-10-12 23:59:06,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628af8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:06, skipping insertion in model container [2021-10-12 23:59:06,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:06" (3/3) ... [2021-10-12 23:59:06,018 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-10-12 23:59:06,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:06,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-12 23:59:06,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:06,075 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-12 23:59:06,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-12 23:59:06,088 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) [2021-10-12 23:59:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-12 23:59:06,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:06,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:06,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:06,099 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-12 23:59:06,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:06,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685966580] [2021-10-12 23:59:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:06,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:06,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:06,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685966580] [2021-10-12 23:59:06,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685966580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:06,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:06,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-12 23:59:06,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276405606] [2021-10-12 23:59:06,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-12 23:59:06,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-12 23:59:06,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:06,265 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) [2021-10-12 23:59:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:06,279 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-12 23:59:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-12 23:59:06,280 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 [2021-10-12 23:59:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:06,287 INFO L225 Difference]: With dead ends: 23 [2021-10-12 23:59:06,288 INFO L226 Difference]: Without dead ends: 9 [2021-10-12 23:59:06,290 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 [2021-10-12 23:59:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-12 23:59:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-12 23:59:06,317 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) [2021-10-12 23:59:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-12 23:59:06,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-12 23:59:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:06,320 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-12 23:59:06,320 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) [2021-10-12 23:59:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-12 23:59:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-12 23:59:06,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:06,321 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:06,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-12 23:59:06,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:06,323 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-12 23:59:06,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:06,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962296822] [2021-10-12 23:59:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:06,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:06,342 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:06,379 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:06,379 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-12 23:59:06,381 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-12 23:59:06,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-12 23:59:06,388 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-12 23:59:06,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:59:06 BoogieIcfgContainer [2021-10-12 23:59:06,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-12 23:59:06,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-12 23:59:06,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-12 23:59:06,436 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-12 23:59:06,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:06" (3/4) ... [2021-10-12 23:59:06,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-12 23:59:06,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-12 23:59:06,442 INFO L168 Benchmark]: Toolchain (without parser) took 982.45 ms. Allocated memory is still 109.1 MB. Free memory was 73.3 MB in the beginning and 50.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:06,443 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 83.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:06,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.02 ms. Allocated memory is still 109.1 MB. Free memory was 73.3 MB in the beginning and 83.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:06,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:06,445 INFO L168 Benchmark]: Boogie Preprocessor took 20.10 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 81.2 MB in the end (delta: 787.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:06,446 INFO L168 Benchmark]: RCFGBuilder took 244.76 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 72.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:06,446 INFO L168 Benchmark]: TraceAbstraction took 408.36 ms. Allocated memory is still 109.1 MB. Free memory was 72.1 MB in the beginning and 50.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:06,447 INFO L168 Benchmark]: Witness Printer took 19.79 ms. Allocated memory is still 109.1 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:06,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 83.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.02 ms. Allocated memory is still 109.1 MB. Free memory was 73.3 MB in the beginning and 83.9 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.65 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.10 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 81.2 MB in the end (delta: 787.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 244.76 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 72.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 408.36 ms. Allocated memory is still 109.1 MB. Free memory was 72.1 MB in the beginning and 50.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 19.79 ms. Allocated memory is still 109.1 MB. Free memory is still 50.6 MB. 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: 320.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.4ms, AutomataDifference: 39.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, 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: 14.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.3ms SsaConstructionTime, 38.0ms SatisfiabilityAnalysisTime, 44.0ms 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 [2021-10-12 23:59:06,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-12 23:59:08,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:08,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:08,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:08,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:08,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:08,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:08,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:08,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:08,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:08,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:08,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:08,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:08,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:08,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:08,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:08,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:08,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:08,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:08,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:08,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:08,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:08,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:08,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:08,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:08,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:08,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:08,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:08,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:08,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:08,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:09,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:09,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:09,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:09,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:09,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:09,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:09,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:09,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:09,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:09,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:09,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-12 23:59:09,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:09,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:09,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:09,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:09,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:09,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:09,058 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:09,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:09,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:09,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:09,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:09,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-12 23:59:09,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:09,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-12 23:59:09,060 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-12 23:59:09,060 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-12 23:59:09,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:09,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-12 23:59:09,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:09,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-12 23:59:09,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:09,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:09,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:09,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:09,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:09,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:09,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-12 23:59:09,063 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-12 23:59:09,063 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-12 23:59:09,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-12 23:59:09,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:09,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-12 23:59:09,064 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_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2021-10-12 23:59:09,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:09,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:09,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:09,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:09,449 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:09,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-12 23:59:09,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/121911743/08c40bd91663458d8177efa1feaf49e6/FLAGf822590bd [2021-10-12 23:59:09,985 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:09,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-12 23:59:09,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/121911743/08c40bd91663458d8177efa1feaf49e6/FLAGf822590bd [2021-10-12 23:59:10,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/data/121911743/08c40bd91663458d8177efa1feaf49e6 [2021-10-12 23:59:10,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:10,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-12 23:59:10,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:10,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:10,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:10,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a49fb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10, skipping insertion in model container [2021-10-12 23:59:10,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:10,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:10,560 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_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-12 23:59:10,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:10,578 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:10,639 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_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-12 23:59:10,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:10,657 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:10,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10 WrapperNode [2021-10-12 23:59:10,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:10,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:10,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-12 23:59:10,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-12 23:59:10,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:10,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:10,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:10,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:10,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:10,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:10,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:10,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:10,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (1/1) ... [2021-10-12 23:59:10,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:10,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:10,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:10,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-12 23:59:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-12 23:59:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:15,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:15,808 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-12 23:59:15,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:15 BoogieIcfgContainer [2021-10-12 23:59:15,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:15,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:15,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:15,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:15,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:10" (1/3) ... [2021-10-12 23:59:15,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e2ccaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:15, skipping insertion in model container [2021-10-12 23:59:15,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:10" (2/3) ... [2021-10-12 23:59:15,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e2ccaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:15, skipping insertion in model container [2021-10-12 23:59:15,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:15" (3/3) ... [2021-10-12 23:59:15,819 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-10-12 23:59:15,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:15,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-12 23:59:15,881 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:15,888 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-12 23:59:15,889 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-12 23:59:15,902 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) [2021-10-12 23:59:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-12 23:59:15,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:15,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:15,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:15,914 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-12 23:59:15,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:15,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145505046] [2021-10-12 23:59:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:15,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:15,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:15,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:15,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-12 23:59:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:17,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-12 23:59:17,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:17,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:17,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:17,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145505046] [2021-10-12 23:59:17,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145505046] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:17,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:17,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-12 23:59:17,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199994006] [2021-10-12 23:59:17,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-12 23:59:17,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:17,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-12 23:59:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:17,332 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) [2021-10-12 23:59:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:17,344 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-12 23:59:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-12 23:59:17,345 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 [2021-10-12 23:59:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:17,353 INFO L225 Difference]: With dead ends: 23 [2021-10-12 23:59:17,353 INFO L226 Difference]: Without dead ends: 9 [2021-10-12 23:59:17,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-12 23:59:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-12 23:59:17,379 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) [2021-10-12 23:59:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-12 23:59:17,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-12 23:59:17,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:17,382 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-12 23:59:17,382 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) [2021-10-12 23:59:17,382 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-12 23:59:17,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-12 23:59:17,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:17,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:17,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:17,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:17,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-12 23:59:17,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:17,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286238130] [2021-10-12 23:59:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:17,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:17,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:17,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:17,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-12 23:59:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:24,806 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:00:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:00:12,160 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:00:12,161 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:00:12,163 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:00:12,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:00:12,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:00:12,371 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:00:12,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:00:12 BoogieIcfgContainer [2021-10-13 00:00:12,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:00:12,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:00:12,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:00:12,402 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:00:12,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:15" (3/4) ... [2021-10-13 00:00:12,405 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:00:12,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:00:12,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:00:12,456 INFO L168 Benchmark]: Toolchain (without parser) took 62065.80 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 41.5 MB in the beginning and 52.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:00:12,457 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 60.8 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:00:12,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.79 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 44.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:00:12,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:00:12,458 INFO L168 Benchmark]: Boogie Preprocessor took 26.26 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 41.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:00:12,459 INFO L168 Benchmark]: RCFGBuilder took 5073.03 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 32.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:00:12,460 INFO L168 Benchmark]: TraceAbstraction took 56588.98 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 31.5 MB in the beginning and 54.5 MB in the end (delta: -23.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:00:12,461 INFO L168 Benchmark]: Witness Printer took 52.53 ms. Allocated memory is still 92.3 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:00:12,464 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 60.8 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.79 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 44.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.26 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 41.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5073.03 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 32.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 56588.98 ms. Allocated memory was 60.8 MB in the beginning and 92.3 MB in the end (delta: 31.5 MB). Free memory was 31.5 MB in the beginning and 54.5 MB in the end (delta: -23.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * Witness Printer took 52.53 ms. Allocated memory is still 92.3 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [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: 56489.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 37.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, 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, 14 GetRequests, 14 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: 12.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.8ms SsaConstructionTime, 8278.3ms SatisfiabilityAnalysisTime, 202.0ms 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! [2021-10-13 00:00:12,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b52b6d2-7bb7-4254-9eb5-bbb173ddc860/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...