./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_1_4.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 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:19:32,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:19:32,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:19:32,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:19:32,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:19:32,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:19:32,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:19:32,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:19:32,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:19:32,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:19:32,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:19:32,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:19:32,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:19:32,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:19:32,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:19:32,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:19:32,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:19:32,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:19:32,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:19:32,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:19:32,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:19:32,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:19:32,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:19:32,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:19:32,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:19:32,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:19:32,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:19:32,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:19:32,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:19:32,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:19:32,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:19:32,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:19:32,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:19:32,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:19:32,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:19:32,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:19:32,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:19:32,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:19:32,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:19:32,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:19:32,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:19:32,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:19:32,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:19:32,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:19:32,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:19:32,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:19:32,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:19:32,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:19:32,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:19:32,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:19:32,303 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:19:32,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:19:32,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:19:32,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:19:32,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:19:32,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:19:32,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:19:32,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:19:32,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:19:32,305 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:19:32,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:19:32,305 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:19:32,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:19:32,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:19:32,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:19:32,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:19:32,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:19:32,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:19:32,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:19:32,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:19:32,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:19:32,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:19:32,309 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:19:32,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:19:32,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:19:32,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:19:32,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 [2021-12-15 10:19:32,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:19:32,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:19:32,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:19:32,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:19:32,609 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:19:32,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-12-15 10:19:32,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59b6aaf0/8c6dc2fbb2c6446cb03865d519cc9b59/FLAG0561aa9d6 [2021-12-15 10:19:33,036 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:19:33,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-12-15 10:19:33,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59b6aaf0/8c6dc2fbb2c6446cb03865d519cc9b59/FLAG0561aa9d6 [2021-12-15 10:19:33,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59b6aaf0/8c6dc2fbb2c6446cb03865d519cc9b59 [2021-12-15 10:19:33,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:19:33,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:19:33,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:19:33,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:19:33,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:19:33,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22060fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33, skipping insertion in model container [2021-12-15 10:19:33,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:19:33,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:19:33,213 WARN L230 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_1_4.i[1722,1735] [2021-12-15 10:19:33,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:19:33,222 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:19:33,237 WARN L230 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_1_4.i[1722,1735] [2021-12-15 10:19:33,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:19:33,248 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:19:33,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33 WrapperNode [2021-12-15 10:19:33,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:19:33,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:19:33,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:19:33,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:19:33,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,280 INFO L137 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2021-12-15 10:19:33,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:19:33,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:19:33,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:19:33,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:19:33,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:19:33,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:19:33,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:19:33,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:19:33,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (1/1) ... [2021-12-15 10:19:33,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:19:33,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:19:33,352 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) [2021-12-15 10:19:33,362 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 [2021-12-15 10:19:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:19:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:19:33,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:19:33,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:19:33,447 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:19:33,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:19:33,559 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:19:33,567 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:19:33,570 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:19:33,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:33 BoogieIcfgContainer [2021-12-15 10:19:33,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:19:33,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:19:33,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:19:33,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:19:33,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:19:33" (1/3) ... [2021-12-15 10:19:33,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59773694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:19:33, skipping insertion in model container [2021-12-15 10:19:33,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:33" (2/3) ... [2021-12-15 10:19:33,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59773694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:19:33, skipping insertion in model container [2021-12-15 10:19:33,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:33" (3/3) ... [2021-12-15 10:19:33,581 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-12-15 10:19:33,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:19:33,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:19:33,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:19:33,647 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 [2021-12-15 10:19:33,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:19:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:19:33,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:19:33,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:19:33,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:19:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:19:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-12-15 10:19:33,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:19:33,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495736976] [2021-12-15 10:19:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:19:33,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:19:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:19:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:19:33,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:19:33,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495736976] [2021-12-15 10:19:33,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495736976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:19:33,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:19:33,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:19:33,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512300350] [2021-12-15 10:19:33,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:19:33,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:19:33,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:19:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:19:33,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:19:33,906 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:19:33,933 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-15 10:19:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:19:33,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 10:19:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:19:33,941 INFO L225 Difference]: With dead ends: 23 [2021-12-15 10:19:33,942 INFO L226 Difference]: Without dead ends: 9 [2021-12-15 10:19:33,946 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 [2021-12-15 10:19:33,950 INFO L933 BasicCegarLoop]: 12 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, 12 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 [2021-12-15 10:19:33,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:19:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-15 10:19:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-15 10:19:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-15 10:19:33,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-12-15 10:19:33,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:19:33,978 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-15 10:19:33,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-15 10:19:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:19:33,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:19:33,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:19:33,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:19:33,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:19:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:19:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-12-15 10:19:33,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:19:33,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353139001] [2021-12-15 10:19:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:19:33,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:19:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:19:34,018 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 10:19:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:19:34,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 10:19:34,062 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 10:19:34,064 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 10:19:34,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 10:19:34,073 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 10:19:34,078 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 10:19:34,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:19:34 BoogieIcfgContainer [2021-12-15 10:19:34,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 10:19:34,100 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 10:19:34,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 10:19:34,100 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 10:19:34,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:33" (3/4) ... [2021-12-15 10:19:34,109 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 10:19:34,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 10:19:34,110 INFO L158 Benchmark]: Toolchain (without parser) took 1054.43ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.4MB in the beginning and 88.0MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:19:34,111 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 92.3MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:19:34,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.40ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 68.2MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:19:34,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.05ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 66.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:19:34,112 INFO L158 Benchmark]: Boogie Preprocessor took 37.87ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 65.6MB in the end (delta: 953.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:19:34,113 INFO L158 Benchmark]: RCFGBuilder took 253.32ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 56.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:19:34,113 INFO L158 Benchmark]: TraceAbstraction took 525.42ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.6MB in the beginning and 86.8MB in the end (delta: -30.2MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2021-12-15 10:19:34,114 INFO L158 Benchmark]: Witness Printer took 9.88ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 88.0MB in the end (delta: -1.3MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-12-15 10:19:34,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 92.3MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.40ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 68.2MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.05ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 66.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.87ms. Allocated memory is still 92.3MB. Free memory was 66.6MB in the beginning and 65.6MB in the end (delta: 953.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 253.32ms. Allocated memory is still 92.3MB. Free memory was 65.6MB in the beginning and 56.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 525.42ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.6MB in the beginning and 86.8MB in the end (delta: -30.2MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Witness Printer took 9.88ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 88.0MB in the end (delta: -1.3MB). Peak memory consumption was 6.4MB. 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 42. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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)=49, x=49] [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)=49, x=49] [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=49] [L51] reach_error() VAL [IN=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 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, 12 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, 12 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=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 10:19:34,162 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... --- 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=/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_1_4.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 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:19:36,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:19:36,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:19:36,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:19:36,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:19:36,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:19:36,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:19:36,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:19:36,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:19:36,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:19:36,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:19:36,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:19:36,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:19:36,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:19:36,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:19:36,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:19:36,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:19:36,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:19:36,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:19:36,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:19:36,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:19:36,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:19:36,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:19:36,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:19:36,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:19:36,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:19:36,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:19:36,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:19:36,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:19:36,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:19:36,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:19:36,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:19:36,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:19:36,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:19:36,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:19:36,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:19:36,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:19:36,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:19:36,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:19:36,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:19:36,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:19:36,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:19:36,240 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:19:36,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:19:36,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:19:36,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:19:36,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:19:36,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:19:36,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:19:36,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:19:36,245 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:19:36,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:19:36,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:19:36,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:19:36,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:19:36,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:19:36,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:19:36,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:19:36,247 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:19:36,247 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:19:36,248 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:19:36,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:19:36,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:19:36,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:19:36,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:19:36,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:19:36,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:19:36,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:19:36,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:19:36,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:19:36,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:19:36,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:19:36,258 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:19:36,258 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:19:36,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:19:36,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:19:36,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:19:36,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:19:36,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:19:36,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15357de746283fe60d846c8349b4c6ce8cd7385cd186a6f3b39858042f1d66f7 [2021-12-15 10:19:36,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:19:36,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:19:36,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:19:36,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:19:36,558 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:19:36,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-12-15 10:19:36,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b463ca8eb/73410b69db9e49d3b9675e2190ee219f/FLAGb1ba933db [2021-12-15 10:19:37,066 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:19:37,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-12-15 10:19:37,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b463ca8eb/73410b69db9e49d3b9675e2190ee219f/FLAGb1ba933db [2021-12-15 10:19:37,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b463ca8eb/73410b69db9e49d3b9675e2190ee219f [2021-12-15 10:19:37,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:19:37,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:19:37,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:19:37,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:19:37,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:19:37,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15dd26e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37, skipping insertion in model container [2021-12-15 10:19:37,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:19:37,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:19:37,657 WARN L230 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_1_4.i[1722,1735] [2021-12-15 10:19:37,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:19:37,672 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:19:37,730 WARN L230 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_1_4.i[1722,1735] [2021-12-15 10:19:37,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:19:37,760 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:19:37,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37 WrapperNode [2021-12-15 10:19:37,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:19:37,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:19:37,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:19:37,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:19:37,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,807 INFO L137 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2021-12-15 10:19:37,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:19:37,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:19:37,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:19:37,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:19:37,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:19:37,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:19:37,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:19:37,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:19:37,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (1/1) ... [2021-12-15 10:19:37,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:19:37,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:19:37,892 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) [2021-12-15 10:19:37,894 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 [2021-12-15 10:19:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:19:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:19:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:19:37,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:19:37,991 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:19:37,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:19:44,902 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:19:44,907 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:19:44,907 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:19:44,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:44 BoogieIcfgContainer [2021-12-15 10:19:44,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:19:44,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:19:44,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:19:44,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:19:44,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:19:37" (1/3) ... [2021-12-15 10:19:44,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460626e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:19:44, skipping insertion in model container [2021-12-15 10:19:44,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:37" (2/3) ... [2021-12-15 10:19:44,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460626e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:19:44, skipping insertion in model container [2021-12-15 10:19:44,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:44" (3/3) ... [2021-12-15 10:19:44,916 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-12-15 10:19:44,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:19:44,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:19:44,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:19:44,973 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 [2021-12-15 10:19:44,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:19:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:19:44,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:19:44,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:19:44,989 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:19:44,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:19:44,994 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-12-15 10:19:45,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:19:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672958680] [2021-12-15 10:19:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:19:45,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:19:45,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:19:45,011 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) [2021-12-15 10:19:45,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 10:19:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:19:45,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 10:19:45,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:19:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:19:45,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:19:45,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 10:19:45,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672958680] [2021-12-15 10:19:45,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672958680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:19:45,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:19:45,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:19:45,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530653512] [2021-12-15 10:19:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:19:45,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:19:45,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 10:19:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:19:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:19:46,017 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:19:46,028 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-15 10:19:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:19:46,030 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 10:19:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:19:46,036 INFO L225 Difference]: With dead ends: 23 [2021-12-15 10:19:46,036 INFO L226 Difference]: Without dead ends: 9 [2021-12-15 10:19:46,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:19:46,041 INFO L933 BasicCegarLoop]: 12 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, 12 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 [2021-12-15 10:19:46,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:19:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-15 10:19:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-15 10:19:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-15 10:19:46,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-12-15 10:19:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:19:46,066 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-15 10:19:46,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-15 10:19:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:19:46,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:19:46,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:19:46,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 10:19:46,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 10:19:46,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:19:46,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:19:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-12-15 10:19:46,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:19:46,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118004538] [2021-12-15 10:19:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:19:46,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:19:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:19:46,288 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) [2021-12-15 10:19:46,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process