./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0 --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 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:30:50,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:30:50,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:30:50,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:30:50,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:30:50,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:30:50,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:30:50,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:30:50,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:30:50,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:30:50,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:30:50,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:30:50,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:30:50,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:30:50,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:30:50,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:30:50,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:30:50,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:30:50,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:30:50,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:30:50,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:30:50,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:30:50,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:30:50,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:30:50,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:30:50,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:30:50,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:30:50,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:30:50,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:30:50,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:30:50,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:30:50,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:30:50,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:30:50,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:30:50,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:30:50,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:30:50,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:30:50,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:30:50,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:30:50,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:30:50,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:30:50,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:30:50,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:30:50,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:30:50,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:30:50,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:30:50,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:30:50,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:30:50,222 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:30:50,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:30:50,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:30:50,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:30:50,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:30:50,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:30:50,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:30:50,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:30:50,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:30:50,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:30:50,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:30:50,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:30:50,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:30:50,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:30:50,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:30:50,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:30:50,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:30:50,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:30:50,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:30:50,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:30:50,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:30:50,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:30:50,228 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:30:50,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:30:50,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:30:50,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:30:50,229 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_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 [2021-11-22 14:30:50,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:30:50,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:30:50,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:30:50,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:30:50,528 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:30:50,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-22 14:30:50,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/315de0bb5/e7c96d18bb1d42119361b68cc4a4d955/FLAG6df2004f4 [2021-11-22 14:30:51,026 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:30:51,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-22 14:30:51,033 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/315de0bb5/e7c96d18bb1d42119361b68cc4a4d955/FLAG6df2004f4 [2021-11-22 14:30:51,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/315de0bb5/e7c96d18bb1d42119361b68cc4a4d955 [2021-11-22 14:30:51,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:30:51,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:30:51,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:30:51,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:30:51,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:30:51,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31942ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51, skipping insertion in model container [2021-11-22 14:30:51,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:30:51,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:30:51,695 WARN L230 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_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-22 14:30:51,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:30:51,710 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:30:51,752 WARN L230 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_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-22 14:30:51,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:30:51,771 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:30:51,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51 WrapperNode [2021-11-22 14:30:51,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:30:51,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:30:51,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:30:51,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:30:51,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,823 INFO L137 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 52 [2021-11-22 14:30:51,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:30:51,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:30:51,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:30:51,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:30:51,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:30:51,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:30:51,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:30:51,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:30:51,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (1/1) ... [2021-11-22 14:30:51,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:30:51,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:30:51,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:30:51,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:30:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:30:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:30:51,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:30:51,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:30:52,021 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:30:52,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:30:52,135 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:30:52,140 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:30:52,141 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 14:30:52,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:52 BoogieIcfgContainer [2021-11-22 14:30:52,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:30:52,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:30:52,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:30:52,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:30:52,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:30:51" (1/3) ... [2021-11-22 14:30:52,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b302934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:52, skipping insertion in model container [2021-11-22 14:30:52,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:51" (2/3) ... [2021-11-22 14:30:52,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b302934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:30:52, skipping insertion in model container [2021-11-22 14:30:52,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:52" (3/3) ... [2021-11-22 14:30:52,151 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-11-22 14:30:52,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:30:52,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:30:52,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:30:52,256 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 [2021-11-22 14:30:52,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:30:52,279 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) [2021-11-22 14:30:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 14:30:52,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:30:52,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:30:52,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:30:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:30:52,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-22 14:30:52,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:30:52,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346638203] [2021-11-22 14:30:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:30:52,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:30:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:30:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:30:52,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:30:52,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346638203] [2021-11-22 14:30:52,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346638203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:30:52,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:30:52,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:30:52,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298185078] [2021-11-22 14:30:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:30:52,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:30:52,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:30:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:30:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:30:52,477 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) [2021-11-22 14:30:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:30:52,491 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-22 14:30:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:30:52,493 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 [2021-11-22 14:30:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:30:52,500 INFO L225 Difference]: With dead ends: 31 [2021-11-22 14:30:52,500 INFO L226 Difference]: Without dead ends: 13 [2021-11-22 14:30:52,503 INFO L932 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 [2021-11-22 14:30:52,507 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:30:52,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:30:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-22 14:30:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-22 14:30:52,535 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) [2021-11-22 14:30:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-22 14:30:52,536 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-22 14:30:52,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:30:52,537 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-22 14:30:52,537 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) [2021-11-22 14:30:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-22 14:30:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 14:30:52,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:30:52,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:30:52,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:30:52,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:30:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:30:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-22 14:30:52,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:30:52,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010374885] [2021-11-22 14:30:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:30:52,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:30:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:30:52,570 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:30:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:30:52,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:30:52,624 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 14:30:52,626 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 14:30:52,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:30:52,631 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-22 14:30:52,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 14:30:52,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:30:52 BoogieIcfgContainer [2021-11-22 14:30:52,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 14:30:52,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 14:30:52,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 14:30:52,660 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 14:30:52,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:30:52" (3/4) ... [2021-11-22 14:30:52,664 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 14:30:52,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 14:30:52,665 INFO L158 Benchmark]: Toolchain (without parser) took 1228.38ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.8MB in the beginning and 87.3MB in the end (delta: -27.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:52,666 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 63.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:52,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.64ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 68.9MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:30:52,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.27ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:30:52,668 INFO L158 Benchmark]: Boogie Preprocessor took 44.64ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 66.4MB in the end (delta: 907.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:52,668 INFO L158 Benchmark]: RCFGBuilder took 272.99ms. Allocated memory is still 94.4MB. Free memory was 66.4MB in the beginning and 57.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:30:52,669 INFO L158 Benchmark]: TraceAbstraction took 514.94ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.8MB in the beginning and 87.9MB in the end (delta: -31.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:52,669 INFO L158 Benchmark]: Witness Printer took 4.14ms. Allocated memory is still 113.2MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:52,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 63.5MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.64ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 68.9MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.27ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.64ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 66.4MB in the end (delta: 907.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 272.99ms. Allocated memory is still 94.4MB. Free memory was 66.4MB in the beginning and 57.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 514.94ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 56.8MB in the beginning and 87.9MB in the end (delta: -31.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.14ms. Allocated memory is still 113.2MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. * 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: 51]: 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 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=52, x=52] [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=52, x=52] [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L44] RET, EXPR f(x) [L44] CALL, EXPR fp(x) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L44] RET, EXPR fp(x) [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=54, x=54] [L46] RET, EXPR f(x) [L46] CALL, EXPR fp(x) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=54, x=54] [L46] RET, EXPR fp(x) [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=52] [L51] reach_error() VAL [IN=52] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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 [2021-11-22 14:30:52,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/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_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0 --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 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:30:55,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:30:55,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:30:55,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:30:55,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:30:55,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:30:55,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:30:55,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:30:55,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:30:55,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:30:55,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:30:55,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:30:55,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:30:55,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:30:55,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:30:55,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:30:55,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:30:55,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:30:55,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:30:55,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:30:55,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:30:55,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:30:55,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:30:55,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:30:55,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:30:55,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:30:55,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:30:55,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:30:55,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:30:55,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:30:55,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:30:55,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:30:55,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:30:55,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:30:55,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:30:55,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:30:55,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:30:55,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:30:55,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:30:55,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:30:55,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:30:55,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 14:30:55,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:30:55,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:30:55,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:30:55,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:30:55,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:30:55,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:30:55,263 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:30:55,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:30:55,263 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:30:55,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:30:55,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:30:55,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:30:55,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:30:55,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:30:55,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 14:30:55,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 14:30:55,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 14:30:55,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:30:55,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:30:55,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:30:55,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:30:55,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:30:55,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:30:55,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:30:55,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:30:55,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:30:55,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:30:55,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:30:55,269 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 14:30:55,269 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 14:30:55,269 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:30:55,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:30:55,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:30:55,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:30:55,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 14:30:55,271 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_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df3dc3bb1738e955623753f7e0a37e4c32635ed29b967d6ef98d4204effab31 [2021-11-22 14:30:55,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:30:55,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:30:55,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:30:55,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:30:55,709 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:30:55,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-22 14:30:55,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/bdfb02405/07e56dac73f649e4a64ccab7e96dc6da/FLAG771d99b1f [2021-11-22 14:30:56,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:30:56,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-11-22 14:30:56,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/bdfb02405/07e56dac73f649e4a64ccab7e96dc6da/FLAG771d99b1f [2021-11-22 14:30:56,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/data/bdfb02405/07e56dac73f649e4a64ccab7e96dc6da [2021-11-22 14:30:56,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:30:56,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:30:56,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:30:56,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:30:56,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:30:56,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:56,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df80869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56, skipping insertion in model container [2021-11-22 14:30:56,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:56,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:30:56,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:30:56,863 WARN L230 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_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-22 14:30:56,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:30:56,877 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:30:56,914 WARN L230 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_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1764,1777] [2021-11-22 14:30:56,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:30:56,945 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:30:56,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56 WrapperNode [2021-11-22 14:30:56,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:30:56,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:30:56,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:30:56,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:30:56,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:56,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,007 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 53 [2021-11-22 14:30:57,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:30:57,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:30:57,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:30:57,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:30:57,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:30:57,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:30:57,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:30:57,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:30:57,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (1/1) ... [2021-11-22 14:30:57,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:30:57,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:30:57,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:30:57,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:30:57,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:30:57,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 14:30:57,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:30:57,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:30:57,192 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:30:57,193 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:31:11,826 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:31:11,832 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:31:11,832 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 14:31:11,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:11 BoogieIcfgContainer [2021-11-22 14:31:11,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:31:11,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:31:11,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:31:11,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:31:11,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:30:56" (1/3) ... [2021-11-22 14:31:11,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccbc07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:11, skipping insertion in model container [2021-11-22 14:31:11,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:30:56" (2/3) ... [2021-11-22 14:31:11,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccbc07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:11, skipping insertion in model container [2021-11-22 14:31:11,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:11" (3/3) ... [2021-11-22 14:31:11,842 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-11-22 14:31:11,847 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:31:11,848 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:31:11,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:31:11,905 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 [2021-11-22 14:31:11,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:31:11,919 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) [2021-11-22 14:31:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 14:31:11,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:11,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:11,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:31:11,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-11-22 14:31:11,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:31:11,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18817156] [2021-11-22 14:31:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:11,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:31:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:31:11,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:31:11,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 14:31:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:15,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 14:31:15,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:31:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:15,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:31:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:15,431 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:31:15,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18817156] [2021-11-22 14:31:15,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18817156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:15,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:15,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 14:31:15,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811576505] [2021-11-22 14:31:15,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:15,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:31:15,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:31:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:31:15,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:31:15,467 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) [2021-11-22 14:31:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:15,481 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-22 14:31:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:31:15,483 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 [2021-11-22 14:31:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:15,490 INFO L225 Difference]: With dead ends: 31 [2021-11-22 14:31:15,490 INFO L226 Difference]: Without dead ends: 13 [2021-11-22 14:31:15,493 INFO L932 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 [2021-11-22 14:31:15,497 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:15,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-22 14:31:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-22 14:31:15,521 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) [2021-11-22 14:31:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-22 14:31:15,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-11-22 14:31:15,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:15,523 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-22 14:31:15,524 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) [2021-11-22 14:31:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-22 14:31:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 14:31:15,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:15,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:15,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:31:15,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:31:15,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:31:15,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-11-22 14:31:15,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:31:15,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192962715] [2021-11-22 14:31:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:15,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:31:15,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:31:15,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:31:15,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d981e1-00a3-4d5b-9c8b-7030185ad62f/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 14:32:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:32:37,795 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.