./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_2.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 e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:20:20,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:20:20,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:20:20,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:20:20,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:20:20,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:20:20,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:20:20,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:20:20,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:20:20,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:20:20,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:20:20,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:20:20,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:20:20,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:20:20,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:20:20,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:20:20,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:20:20,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:20:20,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:20:20,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:20:20,390 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:20:20,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:20:20,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:20:20,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:20:20,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:20:20,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:20:20,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:20:20,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:20:20,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:20:20,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:20:20,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:20:20,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:20:20,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:20:20,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:20:20,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:20:20,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:20:20,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:20:20,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:20:20,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:20:20,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:20:20,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:20:20,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:20:20,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:20:20,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:20:20,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:20:20,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:20:20,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:20:20,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:20:20,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:20:20,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:20:20,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:20:20,440 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:20:20,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:20:20,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:20:20,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:20:20,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:20:20,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:20:20,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:20:20,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:20:20,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:20:20,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:20:20,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:20:20,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:20:20,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:20:20,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:20:20,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:20:20,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:20:20,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:20:20,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:20:20,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:20:20,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:20:20,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:20:20,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:20:20,445 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:20:20,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:20:20,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:20:20,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d [2022-07-19 13:20:20,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:20:20,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:20:20,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:20:20,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:20:20,675 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:20:20,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2022-07-19 13:20:20,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc3df2101/edc8e2257c464b228393e0f60c479370/FLAG4594ccafe [2022-07-19 13:20:21,089 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:20:21,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2022-07-19 13:20:21,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc3df2101/edc8e2257c464b228393e0f60c479370/FLAG4594ccafe [2022-07-19 13:20:21,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc3df2101/edc8e2257c464b228393e0f60c479370 [2022-07-19 13:20:21,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:20:21,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:20:21,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:20:21,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:20:21,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:20:21,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2210f6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21, skipping insertion in model container [2022-07-19 13:20:21,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:20:21,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:20:21,298 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_2.i[1722,1735] [2022-07-19 13:20:21,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:20:21,306 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:20:21,325 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_2.i[1722,1735] [2022-07-19 13:20:21,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:20:21,339 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:20:21,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21 WrapperNode [2022-07-19 13:20:21,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:20:21,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:20:21,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:20:21,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:20:21,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,367 INFO L137 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2022-07-19 13:20:21,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:20:21,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:20:21,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:20:21,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:20:21,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:20:21,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:20:21,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:20:21,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:20:21,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (1/1) ... [2022-07-19 13:20:21,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:20:21,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:20:21,440 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) [2022-07-19 13:20:21,458 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 [2022-07-19 13:20:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:20:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:20:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:20:21,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:20:21,519 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:20:21,520 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:20:21,618 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:20:21,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:20:21,622 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:20:21,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:20:21 BoogieIcfgContainer [2022-07-19 13:20:21,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:20:21,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:20:21,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:20:21,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:20:21,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:20:21" (1/3) ... [2022-07-19 13:20:21,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64df7d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:20:21, skipping insertion in model container [2022-07-19 13:20:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:21" (2/3) ... [2022-07-19 13:20:21,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64df7d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:20:21, skipping insertion in model container [2022-07-19 13:20:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:20:21" (3/3) ... [2022-07-19 13:20:21,637 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_2.i [2022-07-19 13:20:21,647 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:20:21,647 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:20:21,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:20:21,690 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19ca3991, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5be510da [2022-07-19 13:20:21,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:20:21,694 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) [2022-07-19 13:20:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:20:21,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:20:21,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:20:21,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:20:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:20:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2022-07-19 13:20:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:20:21,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373302463] [2022-07-19 13:20:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:20:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:20:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:20:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:20:21,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:20:21,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373302463] [2022-07-19 13:20:21,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373302463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:20:21,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:20:21,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:20:21,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844816711] [2022-07-19 13:20:21,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:20:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:20:21,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:20:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:20:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:20:21,829 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) [2022-07-19 13:20:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:20:21,838 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-07-19 13:20:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:20:21,840 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 [2022-07-19 13:20:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:20:21,845 INFO L225 Difference]: With dead ends: 23 [2022-07-19 13:20:21,845 INFO L226 Difference]: Without dead ends: 9 [2022-07-19 13:20:21,847 INFO L412 NwaCegarLoop]: 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 [2022-07-19 13:20:21,849 INFO L413 NwaCegarLoop]: 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 [2022-07-19 13:20:21,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:20:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-19 13:20:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-19 13:20:21,871 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) [2022-07-19 13:20:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-19 13:20:21,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-19 13:20:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:20:21,873 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-19 13:20:21,873 INFO L496 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) [2022-07-19 13:20:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-19 13:20:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:20:21,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:20:21,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:20:21,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:20:21,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:20:21,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:20:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2022-07-19 13:20:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:20:21,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440792147] [2022-07-19 13:20:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:20:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:20:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:20:21,893 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:20:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:20:21,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:20:21,924 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:20:21,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:20:21,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:20:21,929 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:20:21,932 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:20:21,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:20:21 BoogieIcfgContainer [2022-07-19 13:20:21,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:20:21,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:20:21,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:20:21,955 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:20:21,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:20:21" (3/4) ... [2022-07-19 13:20:21,958 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:20:21,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:20:21,959 INFO L158 Benchmark]: Toolchain (without parser) took 853.28ms. Allocated memory is still 104.9MB. Free memory was 64.3MB in the beginning and 44.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2022-07-19 13:20:21,960 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 81.0MB in the end (delta: 69.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:20:21,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.95ms. Allocated memory is still 104.9MB. Free memory was 64.1MB in the beginning and 78.6MB in the end (delta: -14.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:20:21,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.74ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 77.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:20:21,964 INFO L158 Benchmark]: Boogie Preprocessor took 29.09ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 76.2MB in the end (delta: 823.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:20:21,966 INFO L158 Benchmark]: RCFGBuilder took 229.05ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 67.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:20:21,966 INFO L158 Benchmark]: TraceAbstraction took 325.90ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 44.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-19 13:20:21,966 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 104.9MB. Free memory was 44.7MB in the beginning and 44.4MB in the end (delta: 316.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:20:21,971 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 81.0MB in the end (delta: 69.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.95ms. Allocated memory is still 104.9MB. Free memory was 64.1MB in the beginning and 78.6MB in the end (delta: -14.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.74ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 77.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.09ms. Allocated memory is still 104.9MB. Free memory was 77.0MB in the beginning and 76.2MB in the end (delta: 823.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 229.05ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 67.5MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 325.90ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 44.7MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 104.9MB. Free memory was 44.7MB in the beginning and 44.4MB in the end (delta: 316.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 42. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L42] CALL, EXPR f(IN) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=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: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 0.0s 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 [2022-07-19 13:20:22,005 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_2.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 e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:20:24,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:20:24,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:20:24,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:20:24,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:20:24,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:20:24,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:20:24,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:20:24,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:20:24,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:20:24,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:20:24,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:20:24,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:20:24,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:20:24,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:20:24,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:20:24,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:20:24,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:20:24,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:20:24,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:20:24,244 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:20:24,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:20:24,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:20:24,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:20:24,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:20:24,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:20:24,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:20:24,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:20:24,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:20:24,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:20:24,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:20:24,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:20:24,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:20:24,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:20:24,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:20:24,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:20:24,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:20:24,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:20:24,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:20:24,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:20:24,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:20:24,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:20:24,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:20:24,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:20:24,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:20:24,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:20:24,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:20:24,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:20:24,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:20:24,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:20:24,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:20:24,309 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:20:24,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:20:24,310 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:20:24,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:20:24,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:20:24,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:20:24,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:20:24,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:20:24,311 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:20:24,311 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:20:24,312 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:20:24,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:20:24,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:20:24,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:20:24,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:20:24,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:20:24,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:20:24,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:20:24,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:20:24,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:20:24,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:20:24,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:20:24,314 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:20:24,314 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:20:24,314 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:20:24,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:20:24,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:20:24,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:20:24,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45fd403bdea0e38df4202df32820dd99db87a388b8be6e5049c26042da28d7d [2022-07-19 13:20:24,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:20:24,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:20:24,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:20:24,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:20:24,670 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:20:24,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2022-07-19 13:20:24,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65354e148/c9bfdc0e2c3648cbab1995865b542535/FLAG2bb8590bf [2022-07-19 13:20:25,116 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:20:25,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_2.i [2022-07-19 13:20:25,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65354e148/c9bfdc0e2c3648cbab1995865b542535/FLAG2bb8590bf [2022-07-19 13:20:25,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65354e148/c9bfdc0e2c3648cbab1995865b542535 [2022-07-19 13:20:25,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:20:25,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:20:25,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:20:25,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:20:25,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:20:25,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445f26f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25, skipping insertion in model container [2022-07-19 13:20:25,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:20:25,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:20:25,391 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_2.i[1722,1735] [2022-07-19 13:20:25,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:20:25,443 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:20:25,464 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_2.i[1722,1735] [2022-07-19 13:20:25,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:20:25,478 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:20:25,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25 WrapperNode [2022-07-19 13:20:25,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:20:25,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:20:25,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:20:25,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:20:25,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,517 INFO L137 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2022-07-19 13:20:25,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:20:25,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:20:25,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:20:25,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:20:25,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:20:25,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:20:25,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:20:25,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:20:25,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (1/1) ... [2022-07-19 13:20:25,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:20:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:20:25,576 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) [2022-07-19 13:20:25,592 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 [2022-07-19 13:20:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:20:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:20:25,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:20:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:20:25,651 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:20:25,653 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:20:32,111 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:20:32,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:20:32,124 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:20:32,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:20:32 BoogieIcfgContainer [2022-07-19 13:20:32,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:20:32,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:20:32,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:20:32,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:20:32,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:20:25" (1/3) ... [2022-07-19 13:20:32,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c15867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:20:32, skipping insertion in model container [2022-07-19 13:20:32,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:20:25" (2/3) ... [2022-07-19 13:20:32,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c15867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:20:32, skipping insertion in model container [2022-07-19 13:20:32,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:20:32" (3/3) ... [2022-07-19 13:20:32,132 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_2.i [2022-07-19 13:20:32,141 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:20:32,142 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:20:32,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:20:32,191 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a94aa23, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70f4691b [2022-07-19 13:20:32,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:20:32,195 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) [2022-07-19 13:20:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:20:32,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:20:32,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:20:32,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:20:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:20:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2022-07-19 13:20:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:20:32,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072734958] [2022-07-19 13:20:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:20:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:20:32,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:20:32,238 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) [2022-07-19 13:20:32,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:20:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:20:33,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:20:33,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:20:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:20:33,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:20:33,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:20:33,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072734958] [2022-07-19 13:20:33,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072734958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:20:33,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:20:33,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:20:33,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945074842] [2022-07-19 13:20:33,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:20:33,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:20:33,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:20:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:20:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:20:33,275 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) [2022-07-19 13:20:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:20:33,283 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-07-19 13:20:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:20:33,287 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 [2022-07-19 13:20:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:20:33,294 INFO L225 Difference]: With dead ends: 23 [2022-07-19 13:20:33,294 INFO L226 Difference]: Without dead ends: 9 [2022-07-19 13:20:33,296 INFO L412 NwaCegarLoop]: 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 [2022-07-19 13:20:33,300 INFO L413 NwaCegarLoop]: 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 [2022-07-19 13:20:33,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:20:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-19 13:20:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-07-19 13:20:33,320 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) [2022-07-19 13:20:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-07-19 13:20:33,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2022-07-19 13:20:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:20:33,322 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-07-19 13:20:33,322 INFO L496 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) [2022-07-19 13:20:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-07-19 13:20:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-19 13:20:33,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:20:33,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:20:33,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:20:33,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:20:33,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:20:33,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:20:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2022-07-19 13:20:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:20:33,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911498067] [2022-07-19 13:20:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:20:33,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:20:33,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:20:33,532 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) [2022-07-19 13:20:33,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process