./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX --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 942a1dd05d831af095b785236436096c8cd26a8f09a1fc564f4a03df862b7302 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:50,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:50,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:50,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:50,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:50,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:50,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:50,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:50,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:50,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:50,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:50,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:50,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:50,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:50,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:50,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:50,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:50,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:50,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:50,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:50,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:50,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:50,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:50,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:50,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:50,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:50,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:50,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:50,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:50,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:50,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:50,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:50,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:50,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:50,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:50,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:50,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:50,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:50,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:50,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:50,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:50,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:29:50,641 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:50,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:50,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:50,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:50,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:50,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:50,651 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:50,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:50,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:50,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:50,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:50,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:50,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:29:50,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:50,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:29:50,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:50,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:29:50,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:50,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:29:50,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:50,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:50,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:50,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:50,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:50,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:50,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:29:50,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:50,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:29:50,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:29:50,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:29:50,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:29:50,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:50,660 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_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 942a1dd05d831af095b785236436096c8cd26a8f09a1fc564f4a03df862b7302 [2021-11-09 08:29:50,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:50,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:50,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:50,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:50,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:50,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2021-11-09 08:29:51,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/5cf853109/8562cb4f6b7740f8b2c4121e5505cad0/FLAG85024b535 [2021-11-09 08:29:51,546 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:51,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2021-11-09 08:29:51,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/5cf853109/8562cb4f6b7740f8b2c4121e5505cad0/FLAG85024b535 [2021-11-09 08:29:51,891 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/5cf853109/8562cb4f6b7740f8b2c4121e5505cad0 [2021-11-09 08:29:51,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:51,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:29:51,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:51,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:51,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:51,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:51" (1/1) ... [2021-11-09 08:29:51,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a57b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:51, skipping insertion in model container [2021-11-09 08:29:51,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:51" (1/1) ... [2021-11-09 08:29:51,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:51,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:52,133 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_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1266,1279] [2021-11-09 08:29:52,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:52,146 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:52,166 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_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1266,1279] [2021-11-09 08:29:52,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:52,181 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:52,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52 WrapperNode [2021-11-09 08:29:52,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:52,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:52,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:29:52,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:29:52,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:52,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:52,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:52,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:52,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:52,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:52,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:52,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:52,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:52,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:52,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:52,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:29:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:29:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:29:52,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:29:52,629 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-09 08:29:52,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:52 BoogieIcfgContainer [2021-11-09 08:29:52,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:29:52,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:29:52,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:29:52,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:29:52,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:29:51" (1/3) ... [2021-11-09 08:29:52,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f648e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:52, skipping insertion in model container [2021-11-09 08:29:52,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52" (2/3) ... [2021-11-09 08:29:52,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f648e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:52, skipping insertion in model container [2021-11-09 08:29:52,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:52" (3/3) ... [2021-11-09 08:29:52,641 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_3.i [2021-11-09 08:29:52,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:29:52,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:29:52,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:29:52,716 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:29:52,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:29:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-09 08:29:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:29:52,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:52,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:52,738 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:29:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-09 08:29:52,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:52,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643893876] [2021-11-09 08:29:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:52,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:52,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:52,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643893876] [2021-11-09 08:29:52,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643893876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:52,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:52,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:29:52,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262410658] [2021-11-09 08:29:52,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:29:52,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:29:53,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:29:53,005 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-09 08:29:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:53,023 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-09 08:29:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:29:53,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-09 08:29:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:53,038 INFO L225 Difference]: With dead ends: 31 [2021-11-09 08:29:53,039 INFO L226 Difference]: Without dead ends: 13 [2021-11-09 08:29:53,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:29:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-09 08:29:53,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-09 08:29:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-09 08:29:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-09 08:29:53,101 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-09 08:29:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:53,108 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-09 08:29:53,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-09 08:29:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-09 08:29:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:29:53,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:53,110 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:53,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:29:53,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:29:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-09 08:29:53,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:53,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279435227] [2021-11-09 08:29:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:53,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,165 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:53,227 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:53,228 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:29:53,230 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:29:53,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:29:53,238 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 08:29:53,241 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:29:53,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:29:53 BoogieIcfgContainer [2021-11-09 08:29:53,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:29:53,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:29:53,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:29:53,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:29:53,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:52" (3/4) ... [2021-11-09 08:29:53,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 08:29:53,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:29:53,287 INFO L168 Benchmark]: Toolchain (without parser) took 1390.70 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 67.2 MB in the beginning and 93.7 MB in the end (delta: -26.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:53,288 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:53,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.65 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 75.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:53,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:53,298 INFO L168 Benchmark]: Boogie Preprocessor took 24.21 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 72.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:53,299 INFO L168 Benchmark]: RCFGBuilder took 382.31 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 63.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:53,301 INFO L168 Benchmark]: TraceAbstraction took 641.32 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 62.7 MB in the beginning and 93.7 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:53,301 INFO L168 Benchmark]: Witness Printer took 9.12 ms. Allocated memory is still 123.7 MB. Free memory is still 93.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:53,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.65 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 75.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.21 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 72.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 382.31 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 63.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 641.32 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 62.7 MB in the beginning and 93.7 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 9.12 ms. Allocated memory is still 123.7 MB. Free memory is still 93.7 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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 37. 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2021-11-09 08:29:53,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX --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 942a1dd05d831af095b785236436096c8cd26a8f09a1fc564f4a03df862b7302 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:55,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:55,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:55,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:55,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:55,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:55,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:55,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:55,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:55,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:55,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:55,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:55,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:55,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:55,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:55,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:55,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:55,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:55,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:55,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:55,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:55,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:55,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:55,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:55,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:55,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:55,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:55,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:55,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:55,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:55,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:55,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:55,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:55,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:55,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:55,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:55,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:55,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:55,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:55,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:55,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:55,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 08:29:55,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:55,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:55,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:55,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:55,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:55,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:55,974 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:55,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:55,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:55,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:55,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:55,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:29:55,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:55,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:29:55,976 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:29:55,976 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:29:55,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:55,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:29:55,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:55,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:29:55,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:55,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:55,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:55,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:55,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:55,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:55,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:29:55,979 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:29:55,979 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:29:55,979 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:29:55,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:29:55,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:29:55,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:55,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:29:55,980 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_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 942a1dd05d831af095b785236436096c8cd26a8f09a1fc564f4a03df862b7302 [2021-11-09 08:29:56,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:56,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:56,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:56,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:56,395 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:56,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2021-11-09 08:29:56,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/11252bb69/7f0754797b994cc0a049bba497bba98d/FLAG2e653271e [2021-11-09 08:29:57,095 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:57,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2021-11-09 08:29:57,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/11252bb69/7f0754797b994cc0a049bba497bba98d/FLAG2e653271e [2021-11-09 08:29:57,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/data/11252bb69/7f0754797b994cc0a049bba497bba98d [2021-11-09 08:29:57,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:57,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:29:57,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:57,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:57,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:57,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cba5a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57, skipping insertion in model container [2021-11-09 08:29:57,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:57,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:57,690 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_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1266,1279] [2021-11-09 08:29:57,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,706 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:57,752 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_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1266,1279] [2021-11-09 08:29:57,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,787 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:57,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57 WrapperNode [2021-11-09 08:29:57,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:57,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:57,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:29:57,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:29:57,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:57,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:57,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:57,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:57,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:57,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:57,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:57,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:57,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:29:57,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:57,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:30:13,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:30:13,392 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-09 08:30:13,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:13 BoogieIcfgContainer [2021-11-09 08:30:13,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:30:13,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:30:13,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:30:13,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:30:13,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:29:57" (1/3) ... [2021-11-09 08:30:13,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6919ed2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:13, skipping insertion in model container [2021-11-09 08:30:13,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (2/3) ... [2021-11-09 08:30:13,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6919ed2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:13, skipping insertion in model container [2021-11-09 08:30:13,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:13" (3/3) ... [2021-11-09 08:30:13,403 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_3.i [2021-11-09 08:30:13,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:30:13,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:30:13,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:30:13,467 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:30:13,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:30:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-09 08:30:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:30:13,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:13,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:13,487 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-09 08:30:13,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:13,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956674870] [2021-11-09 08:30:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:13,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:13,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:13,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:13,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:30:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 08:30:17,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:17,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:17,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:17,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956674870] [2021-11-09 08:30:17,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956674870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:17,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:17,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:30:17,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035422076] [2021-11-09 08:30:17,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:30:17,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:30:17,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:30:17,651 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-09 08:30:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:17,667 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-09 08:30:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:30:17,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-09 08:30:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:17,676 INFO L225 Difference]: With dead ends: 31 [2021-11-09 08:30:17,676 INFO L226 Difference]: Without dead ends: 13 [2021-11-09 08:30:17,679 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:30:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-09 08:30:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-09 08:30:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-09 08:30:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-09 08:30:17,706 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-09 08:30:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:17,707 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-09 08:30:17,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-09 08:30:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-09 08:30:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:30:17,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:17,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:17,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 08:30:17,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:17,910 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:17,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-09 08:30:17,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:17,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173924041] [2021-11-09 08:30:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:17,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:17,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:17,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97b5f090-2eb9-4bd2-976e-bd3fafdcc44c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process