./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ...................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 06:11:49,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 06:11:49,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 06:11:49,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 06:11:49,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 06:11:49,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 06:11:49,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 06:11:49,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 06:11:49,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 06:11:49,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 06:11:49,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 06:11:49,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 06:11:49,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 06:11:49,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 06:11:49,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 06:11:49,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 06:11:49,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 06:11:49,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 06:11:49,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 06:11:49,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 06:11:49,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 06:11:49,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 06:11:49,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 06:11:49,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 06:11:49,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 06:11:49,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 06:11:49,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 06:11:49,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 06:11:49,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 06:11:49,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 06:11:49,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 06:11:49,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 06:11:49,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 06:11:49,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 06:11:49,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 06:11:49,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 06:11:49,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 06:11:49,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 06:11:49,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 06:11:49,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 06:11:49,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 06:11:49,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 06:11:49,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 06:11:49,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 06:11:49,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 06:11:49,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 06:11:49,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 06:11:49,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 06:11:49,381 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 06:11:49,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 06:11:49,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 06:11:49,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 06:11:49,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 06:11:49,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 06:11:49,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 06:11:49,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 06:11:49,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 06:11:49,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 06:11:49,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 06:11:49,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 06:11:49,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 06:11:49,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 06:11:49,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 06:11:49,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 06:11:49,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:11:49,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 06:11:49,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 06:11:49,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 06:11:49,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 06:11:49,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 06:11:49,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 06:11:49,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 06:11:49,386 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2021-08-29 06:11:49,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 06:11:49,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 06:11:49,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 06:11:49,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 06:11:49,733 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 06:11:49,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-08-29 06:11:49,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e5317103/8e0e4248ac59477f9065817a669e13ad/FLAGd8cfc87b3 [2021-08-29 06:11:50,165 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 06:11:50,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-08-29 06:11:50,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e5317103/8e0e4248ac59477f9065817a669e13ad/FLAGd8cfc87b3 [2021-08-29 06:11:50,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e5317103/8e0e4248ac59477f9065817a669e13ad [2021-08-29 06:11:50,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 06:11:50,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 06:11:50,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 06:11:50,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 06:11:50,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 06:11:50,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb7da1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50, skipping insertion in model container [2021-08-29 06:11:50,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 06:11:50,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 06:11:50,386 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-08-29 06:11:50,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:11:50,398 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 06:11:50,459 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-08-29 06:11:50,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:11:50,474 INFO L208 MainTranslator]: Completed translation [2021-08-29 06:11:50,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50 WrapperNode [2021-08-29 06:11:50,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 06:11:50,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 06:11:50,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 06:11:50,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 06:11:50,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 06:11:50,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 06:11:50,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 06:11:50,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 06:11:50,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 06:11:50,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 06:11:50,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 06:11:50,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 06:11:50,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (1/1) ... [2021-08-29 06:11:50,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:11:50,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 06:11:50,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 06:11:50,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 06:11:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 06:11:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 06:11:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 06:11:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 06:11:50,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 06:11:50,770 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-08-29 06:11:50,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:11:50 BoogieIcfgContainer [2021-08-29 06:11:50,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 06:11:50,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 06:11:50,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 06:11:50,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 06:11:50,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:11:50" (1/3) ... [2021-08-29 06:11:50,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53895976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:11:50, skipping insertion in model container [2021-08-29 06:11:50,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:50" (2/3) ... [2021-08-29 06:11:50,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53895976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:11:50, skipping insertion in model container [2021-08-29 06:11:50,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:11:50" (3/3) ... [2021-08-29 06:11:50,779 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-08-29 06:11:50,787 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 06:11:50,787 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 06:11:50,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 06:11:50,843 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 06:11:50,843 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 06:11:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-08-29 06:11:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 06:11:50,861 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:11:50,861 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 06:11:50,862 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:11:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:11:50,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-08-29 06:11:50,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 06:11:50,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962847640] [2021-08-29 06:11:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:11:50,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 06:11:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 06:11:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 06:11:51,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 06:11:51,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962847640] [2021-08-29 06:11:51,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962847640] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 06:11:51,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 06:11:51,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 06:11:51,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690813290] [2021-08-29 06:11:51,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 06:11:51,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 06:11:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 06:11:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:11:51,105 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 06:11:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 06:11:51,157 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-08-29 06:11:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 06:11:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-29 06:11:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 06:11:51,165 INFO L225 Difference]: With dead ends: 27 [2021-08-29 06:11:51,165 INFO L226 Difference]: Without dead ends: 11 [2021-08-29 06:11:51,167 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:11:51,183 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.57ms IncrementalHoareTripleChecker+Time [2021-08-29 06:11:51,184 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 38.57ms Time] [2021-08-29 06:11:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-29 06:11:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-29 06:11:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2021-08-29 06:11:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-08-29 06:11:51,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-08-29 06:11:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 06:11:51,231 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-08-29 06:11:51,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 06:11:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-08-29 06:11:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 06:11:51,232 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:11:51,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 06:11:51,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 06:11:51,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:11:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:11:51,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-08-29 06:11:51,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 06:11:51,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422336871] [2021-08-29 06:11:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:11:51,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 06:11:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:11:51,248 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 06:11:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:11:51,286 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 06:11:51,287 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 06:11:51,288 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 06:11:51,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 06:11:51,298 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 06:11:51,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 06:11:51 BoogieIcfgContainer [2021-08-29 06:11:51,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 06:11:51,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 06:11:51,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 06:11:51,324 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 06:11:51,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:11:50" (3/4) ... [2021-08-29 06:11:51,327 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 06:11:51,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 06:11:51,328 INFO L158 Benchmark]: Toolchain (without parser) took 1139.92ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 43.9MB in the beginning and 48.6MB in the end (delta: -4.8MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2021-08-29 06:11:51,329 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:11:51,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.62ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 46.3MB in the end (delta: -2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 06:11:51,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.22ms. Allocated memory is still 62.9MB. Free memory was 46.3MB in the beginning and 44.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:11:51,330 INFO L158 Benchmark]: Boogie Preprocessor took 40.64ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 43.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:11:51,331 INFO L158 Benchmark]: RCFGBuilder took 214.49ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 35.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 06:11:51,331 INFO L158 Benchmark]: TraceAbstraction took 549.44ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 34.9MB in the beginning and 49.1MB in the end (delta: -14.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-08-29 06:11:51,332 INFO L158 Benchmark]: Witness Printer took 3.52ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 48.6MB in the end (delta: 416.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:11:51,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.62ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 46.3MB in the end (delta: -2.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.22ms. Allocated memory is still 62.9MB. Free memory was 46.3MB in the beginning and 44.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.64ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 43.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 214.49ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 35.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 549.44ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 34.9MB in the beginning and 49.1MB in the end (delta: -14.2MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 3.52ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 48.6MB in the end (delta: 416.2kB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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 35. 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) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 463.70ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.59ms, AutomataDifference: 109.78ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.99ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 38.57ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 34.14ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 14 mSolverCounterSat, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 22.06ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.83ms SsaConstructionTime, 36.37ms SatisfiabilityAnalysisTime, 76.63ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2021-08-29 06:11:51,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 06:11:53,200 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-29 06:11:53,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 06:11:53,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 06:11:53,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 06:11:53,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 06:11:53,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 06:11:53,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 06:11:53,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 06:11:53,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 06:11:53,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 06:11:53,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 06:11:53,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 06:11:53,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 06:11:53,331 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 06:11:53,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 06:11:53,332 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 06:11:53,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 06:11:53,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 06:11:53,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 06:11:53,334 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 06:11:53,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 06:11:53,334 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 06:11:53,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 06:11:53,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 06:11:53,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 06:11:53,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 06:11:53,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 06:11:53,335 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 06:11:53,335 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 06:11:53,335 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 06:11:53,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 06:11:53,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 06:11:53,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 06:11:53,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 06:11:53,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 06:11:53,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 06:11:53,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:11:53,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 06:11:53,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 06:11:53,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 06:11:53,337 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 06:11:53,337 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 06:11:53,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 06:11:53,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 06:11:53,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 06:11:53,337 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2021-08-29 06:11:53,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 06:11:53,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 06:11:53,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 06:11:53,678 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 06:11:53,678 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 06:11:53,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-08-29 06:11:53,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c138baf62/80a6ca56da0040d5a1a79340688d7790/FLAGf391888b4 [2021-08-29 06:11:54,060 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 06:11:54,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-08-29 06:11:54,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c138baf62/80a6ca56da0040d5a1a79340688d7790/FLAGf391888b4 [2021-08-29 06:11:54,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c138baf62/80a6ca56da0040d5a1a79340688d7790 [2021-08-29 06:11:54,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 06:11:54,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 06:11:54,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 06:11:54,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 06:11:54,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 06:11:54,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a6f6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54, skipping insertion in model container [2021-08-29 06:11:54,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 06:11:54,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 06:11:54,634 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-08-29 06:11:54,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:11:54,652 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 06:11:54,682 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i[1245,1258] [2021-08-29 06:11:54,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 06:11:54,714 INFO L208 MainTranslator]: Completed translation [2021-08-29 06:11:54,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54 WrapperNode [2021-08-29 06:11:54,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 06:11:54,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 06:11:54,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 06:11:54,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 06:11:54,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 06:11:54,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 06:11:54,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 06:11:54,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 06:11:54,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 06:11:54,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 06:11:54,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 06:11:54,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 06:11:54,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (1/1) ... [2021-08-29 06:11:54,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 06:11:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 06:11:54,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 06:11:54,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 06:11:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 06:11:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 06:11:54,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 06:11:54,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 06:11:54,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 06:11:54,992 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-08-29 06:11:54,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:11:54 BoogieIcfgContainer [2021-08-29 06:11:54,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 06:11:54,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 06:11:54,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 06:11:54,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 06:11:54,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:11:54" (1/3) ... [2021-08-29 06:11:54,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edc2d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:11:54, skipping insertion in model container [2021-08-29 06:11:54,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:11:54" (2/3) ... [2021-08-29 06:11:54,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edc2d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:11:54, skipping insertion in model container [2021-08-29 06:11:54,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:11:54" (3/3) ... [2021-08-29 06:11:55,000 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-08-29 06:11:55,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 06:11:55,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 06:11:55,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 06:11:55,046 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 06:11:55,047 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 06:11:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-08-29 06:11:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 06:11:55,073 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:11:55,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 06:11:55,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:11:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:11:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-08-29 06:11:55,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 06:11:55,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880268932] [2021-08-29 06:11:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:11:55,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 06:11:55,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 06:11:55,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 06:11:55,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 06:11:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 06:11:57,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 06:11:57,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 06:11:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 06:11:57,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 06:11:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 06:11:57,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 06:11:57,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880268932] [2021-08-29 06:11:57,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880268932] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 06:11:57,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 06:11:57,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 06:11:57,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093845411] [2021-08-29 06:11:57,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 06:11:57,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 06:11:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 06:11:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:11:57,219 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 06:12:00,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 06:12:03,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 06:12:06,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 06:12:09,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 06:12:11,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 06:12:11,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 06:12:11,565 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-08-29 06:12:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 06:12:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-29 06:12:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 06:12:11,578 INFO L225 Difference]: With dead ends: 27 [2021-08-29 06:12:11,579 INFO L226 Difference]: Without dead ends: 11 [2021-08-29 06:12:11,581 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.07ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 06:12:11,587 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13350.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14325.33ms IncrementalHoareTripleChecker+Time [2021-08-29 06:12:11,591 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 4 Unknown, 0 Unchecked, 14325.33ms Time] [2021-08-29 06:12:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-29 06:12:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-29 06:12:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2021-08-29 06:12:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-08-29 06:12:11,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-08-29 06:12:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 06:12:11,618 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-08-29 06:12:11,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 06:12:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-08-29 06:12:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 06:12:11,620 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 06:12:11,620 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 06:12:11,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-29 06:12:11,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 06:12:11,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 06:12:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 06:12:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-08-29 06:12:11,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 06:12:11,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041155626] [2021-08-29 06:12:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 06:12:11,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 06:12:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 06:12:11,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 06:12:11,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 06:12:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:12:30,919 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 06:12:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 06:12:52,130 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-29 06:12:52,130 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 06:12:52,132 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 06:12:52,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 06:12:52,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 06:12:52,340 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 06:12:52,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 06:12:52 BoogieIcfgContainer [2021-08-29 06:12:52,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 06:12:52,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 06:12:52,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 06:12:52,362 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 06:12:52,362 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:11:54" (3/4) ... [2021-08-29 06:12:52,363 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 06:12:52,392 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 06:12:52,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 06:12:52,393 INFO L158 Benchmark]: Toolchain (without parser) took 57911.02ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 37.9MB in the beginning and 45.3MB in the end (delta: -7.4MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2021-08-29 06:12:52,393 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:12:52,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.73ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 42.5MB in the end (delta: -4.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 06:12:52,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.51ms. Allocated memory is still 58.7MB. Free memory was 42.5MB in the beginning and 40.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 06:12:52,394 INFO L158 Benchmark]: Boogie Preprocessor took 29.23ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 06:12:52,395 INFO L158 Benchmark]: RCFGBuilder took 178.90ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 30.8MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 06:12:52,395 INFO L158 Benchmark]: TraceAbstraction took 57366.30ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 30.4MB in the beginning and 47.4MB in the end (delta: -17.1MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-08-29 06:12:52,396 INFO L158 Benchmark]: Witness Printer took 30.86ms. Allocated memory is still 88.1MB. Free memory was 47.4MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 06:12:52,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 58.7MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.73ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 42.5MB in the end (delta: -4.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.51ms. Allocated memory is still 58.7MB. Free memory was 42.5MB in the beginning and 40.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.23ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 178.90ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 30.8MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 57366.30ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 30.4MB in the beginning and 47.4MB in the end (delta: -17.1MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Witness Printer took 30.86ms. Allocated memory is still 88.1MB. Free memory was 47.4MB in the beginning and 45.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [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) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57298.28ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 19.59ms, AutomataDifference: 14396.77ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.21ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 14325.33ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 13350.85ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 10 mSolverCounterSat, 0.33ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.07ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 13.49ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.33ms SsaConstructionTime, 20872.51ms SatisfiabilityAnalysisTime, 188.23ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 06:12:52,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...