./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a ....................................................................................................................................................................................................................................................... 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_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:18,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:18,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:18,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:18,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:18,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:18,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:18,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:18,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:18,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:18,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:18,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:18,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:18,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:18,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:18,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:18,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:18,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:18,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:18,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:18,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:18,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:18,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:18,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:18,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:18,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:18,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:18,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:18,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:18,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:18,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:18,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:18,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:18,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:18,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:18,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:18,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:18,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:18,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:18,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:18,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:18,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:18,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:18,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:18,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:18,626 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:18,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:18,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:18,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:18,629 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:18,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:18,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:18,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:18,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:18,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:18,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:18,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:18,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:18,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:18,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:18,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:18,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:18,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:18,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:18,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:18,634 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:18,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:18,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:18,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:18,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:18,635 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2021-10-11 02:21:18,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:18,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:18,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:18,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:18,936 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:18,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-11 02:21:19,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/4fdfdde60/c66b659c0a0247cea592aab58be89b42/FLAGa62c3eb7c [2021-10-11 02:21:19,441 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:19,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-11 02:21:19,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/4fdfdde60/c66b659c0a0247cea592aab58be89b42/FLAGa62c3eb7c [2021-10-11 02:21:19,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/4fdfdde60/c66b659c0a0247cea592aab58be89b42 [2021-10-11 02:21:19,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:19,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:19,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:19,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:19,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:19,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:19" (1/1) ... [2021-10-11 02:21:19,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399a484f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:19, skipping insertion in model container [2021-10-11 02:21:19,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:19" (1/1) ... [2021-10-11 02:21:19,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:19,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:20,098 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-11 02:21:20,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:20,111 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:20,131 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-11 02:21:20,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:20,148 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:20,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20 WrapperNode [2021-10-11 02:21:20,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:20,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:20,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:20,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:20,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:20,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:20,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:20,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:20,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:20,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:20,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:20,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:20,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:20,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:20,687 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:21:20,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:20 BoogieIcfgContainer [2021-10-11 02:21:20,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:20,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:20,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:20,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:20,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:19" (1/3) ... [2021-10-11 02:21:20,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa46e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:20, skipping insertion in model container [2021-10-11 02:21:20,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (2/3) ... [2021-10-11 02:21:20,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa46e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:20, skipping insertion in model container [2021-10-11 02:21:20,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:20" (3/3) ... [2021-10-11 02:21:20,709 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-10-11 02:21:20,725 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:20,728 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:20,740 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:20,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:20,765 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:20,765 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:20,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:20,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:20,765 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:20,766 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:20,766 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:21:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:21:20,783 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:20,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:21:20,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:20,790 INFO L82 PathProgramCache]: Analyzing trace with hash 73805, now seen corresponding path program 1 times [2021-10-11 02:21:20,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:20,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719947793] [2021-10-11 02:21:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:20,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:20,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:20,980 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:20,981 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:20,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:21,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:21 BoogieIcfgContainer [2021-10-11 02:21:21,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:21,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:21,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:21,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:21,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:20" (3/4) ... [2021-10-11 02:21:21,008 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:21:21,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:21,011 INFO L168 Benchmark]: Toolchain (without parser) took 1157.65 ms. Allocated memory is still 121.6 MB. Free memory was 92.7 MB in the beginning and 60.6 MB in the end (delta: 32.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,011 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 121.6 MB. Free memory is still 75.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:21,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.71 ms. Allocated memory is still 121.6 MB. Free memory was 92.4 MB in the beginning and 94.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.33 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 93.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:21,020 INFO L168 Benchmark]: Boogie Preprocessor took 44.56 ms. Allocated memory is still 121.6 MB. Free memory was 93.3 MB in the beginning and 92.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,021 INFO L168 Benchmark]: RCFGBuilder took 452.01 ms. Allocated memory is still 121.6 MB. Free memory was 92.1 MB in the beginning and 73.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,022 INFO L168 Benchmark]: TraceAbstraction took 312.09 ms. Allocated memory is still 121.6 MB. Free memory was 72.5 MB in the beginning and 60.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:21,023 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 121.6 MB. Free memory was 60.9 MB in the beginning and 60.6 MB in the end (delta: 312.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:21,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 121.6 MB. Free memory is still 75.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.71 ms. Allocated memory is still 121.6 MB. Free memory was 92.4 MB in the beginning and 94.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.33 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 93.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.56 ms. Allocated memory is still 121.6 MB. Free memory was 93.3 MB in the beginning and 92.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 452.01 ms. Allocated memory is still 121.6 MB. Free memory was 92.1 MB in the beginning and 73.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 312.09 ms. Allocated memory is still 121.6 MB. Free memory was 72.5 MB in the beginning and 60.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.93 ms. Allocated memory is still 121.6 MB. Free memory was 60.9 MB in the beginning and 60.6 MB in the end (delta: 312.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:23,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:23,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:23,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:23,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:23,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:23,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:23,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:23,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:23,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:23,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:23,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:23,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:23,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:23,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:23,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:23,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:23,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:23,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:23,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:23,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:23,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:23,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:23,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:23,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:23,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:23,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:23,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:23,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:23,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:23,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:23,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:23,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:23,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:23,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:23,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:23,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:23,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:23,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:23,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:23,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:23,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:21:23,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:23,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:23,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:23,752 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:23,752 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:23,752 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:23,752 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:23,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:23,753 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:23,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:23,756 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:23,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:23,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:23,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:23,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:23,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:23,757 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:23,757 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:21:23,758 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:21:23,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:23,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:23,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:23,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:23,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:23,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:21:23,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:23,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:23,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:23,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:23,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:23,760 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:21:23,761 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:23,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:23,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:23,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:23,762 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_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2021-10-11 02:21:24,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:24,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:24,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:24,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:24,215 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:24,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-11 02:21:24,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/a41b1befe/20ce3ec13f2f4187b153e59e49862bdd/FLAG2d56c438b [2021-10-11 02:21:24,774 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:24,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-10-11 02:21:24,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/a41b1befe/20ce3ec13f2f4187b153e59e49862bdd/FLAG2d56c438b [2021-10-11 02:21:25,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/data/a41b1befe/20ce3ec13f2f4187b153e59e49862bdd [2021-10-11 02:21:25,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:25,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:25,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:25,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:25,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:25,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a645b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25, skipping insertion in model container [2021-10-11 02:21:25,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:25,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:25,460 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-11 02:21:25,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:25,489 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:25,527 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-10-11 02:21:25,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:25,569 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:25,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25 WrapperNode [2021-10-11 02:21:25,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:25,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:25,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:25,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:25,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:25,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:25,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:25,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:25,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... [2021-10-11 02:21:25,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:25,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:25,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:25,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:25,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:21:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:25,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:41,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:41,775 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:21:41,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:41 BoogieIcfgContainer [2021-10-11 02:21:41,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:41,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:41,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:41,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:41,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:25" (1/3) ... [2021-10-11 02:21:41,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f330b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:41, skipping insertion in model container [2021-10-11 02:21:41,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:25" (2/3) ... [2021-10-11 02:21:41,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f330b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:41, skipping insertion in model container [2021-10-11 02:21:41,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:41" (3/3) ... [2021-10-11 02:21:41,784 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-10-11 02:21:41,797 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:41,822 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:21:41,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:21:41,885 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:41,885 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:41,885 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:41,886 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:41,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:41,886 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:41,886 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:41,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-10-11 02:21:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:21:41,904 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:41,905 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-10-11 02:21:41,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:41,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115473732] [2021-10-11 02:21:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:21:45,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:45,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:45,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115473732] [2021-10-11 02:21:45,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:45,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444317816] [2021-10-11 02:21:45,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:45,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:45,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:45,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:45,508 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2021-10-11 02:21:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,524 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-11 02:21:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:45,525 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2021-10-11 02:21:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,533 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:21:45,533 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:21:45,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:21:45,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:21:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:21:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-11 02:21:45,566 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-10-11 02:21:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,566 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-11 02:21:45,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-11 02:21:45,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:21:45,567 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:21:45,772 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-10-11 02:21:45,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:45,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563259707] [2021-10-11 02:21:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:03,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:15,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:16,053 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:22:16,054 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:16,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:22:16,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:16 BoogieIcfgContainer [2021-10-11 02:22:16,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:16,287 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:16,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:16,288 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:16,288 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:41" (3/4) ... [2021-10-11 02:22:16,290 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:22:16,334 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c3a841-2f37-4935-8697-6a20d21f9c52/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:16,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:16,336 INFO L168 Benchmark]: Toolchain (without parser) took 51163.28 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 40.9 MB in the beginning and 46.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:16,337 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:16,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.44 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 44.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:16,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.7 MB in the beginning and 42.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:16,339 INFO L168 Benchmark]: Boogie Preprocessor took 64.38 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:16,340 INFO L168 Benchmark]: RCFGBuilder took 16067.69 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 28.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:16,341 INFO L168 Benchmark]: TraceAbstraction took 34508.89 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 27.6 MB in the beginning and 48.3 MB in the end (delta: -20.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:16,342 INFO L168 Benchmark]: Witness Printer took 46.78 ms. Allocated memory is still 75.5 MB. Free memory was 48.3 MB in the beginning and 46.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:16,345 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 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.44 ms. Allocated memory is still 60.8 MB. Free memory was 40.8 MB in the beginning and 44.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.93 ms. Allocated memory is still 60.8 MB. Free memory was 44.7 MB in the beginning and 42.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.38 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 16067.69 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 28.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34508.89 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 27.6 MB in the beginning and 48.3 MB in the end (delta: -20.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 46.78 ms. Allocated memory is still 75.5 MB. Free memory was 48.3 MB in the beginning and 46.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 21.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...