./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_1_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/combinations/gcd_2+newton_1_1.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 dfa1882e30013b6f8b781e69284faf3ca8a3ed1438da7b9df498de897a322653 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:36:19,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:36:19,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:36:19,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:36:19,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:36:19,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:36:19,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:36:19,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:36:19,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:36:19,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:36:19,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:36:19,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:36:19,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:36:19,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:36:19,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:36:19,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:36:19,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:36:19,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:36:19,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:36:19,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:36:19,304 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:36:19,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:36:19,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:36:19,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:36:19,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:36:19,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:36:19,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:36:19,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:36:19,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:36:19,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:36:19,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:36:19,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:36:19,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:36:19,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:36:19,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:36:19,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:36:19,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:36:19,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:36:19,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:36:19,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:36:19,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:36:19,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:36:19,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:36:19,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:36:19,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:36:19,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:36:19,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:36:19,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:36:19,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:36:19,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:36:19,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:36:19,346 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:36:19,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:36:19,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:36:19,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:36:19,349 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:36:19,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:36:19,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:36:19,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:36:19,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:36:19,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:36:19,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:36:19,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:36:19,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:36:19,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:36:19,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:36:19,352 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:36:19,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:36:19,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:36:19,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa1882e30013b6f8b781e69284faf3ca8a3ed1438da7b9df498de897a322653 [2022-07-12 08:36:19,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:36:19,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:36:19,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:36:19,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:36:19,548 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:36:19,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-12 08:36:19,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483c49af1/06f3b8787e1f4a33b774ac02e9ca62f8/FLAG9e63be3e0 [2022-07-12 08:36:19,929 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:36:19,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-12 08:36:19,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483c49af1/06f3b8787e1f4a33b774ac02e9ca62f8/FLAG9e63be3e0 [2022-07-12 08:36:20,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483c49af1/06f3b8787e1f4a33b774ac02e9ca62f8 [2022-07-12 08:36:20,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:36:20,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:36:20,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:36:20,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:36:20,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:36:20,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5311d367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20, skipping insertion in model container [2022-07-12 08:36:20,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:36:20,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:36:20,522 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/combinations/gcd_2+newton_1_1.i[1226,1239] [2022-07-12 08:36:20,561 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/combinations/gcd_2+newton_1_1.i[2820,2833] [2022-07-12 08:36:20,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:36:20,566 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:36:20,574 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/combinations/gcd_2+newton_1_1.i[1226,1239] [2022-07-12 08:36:20,579 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/combinations/gcd_2+newton_1_1.i[2820,2833] [2022-07-12 08:36:20,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:36:20,588 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:36:20,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20 WrapperNode [2022-07-12 08:36:20,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:36:20,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:36:20,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:36:20,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:36:20,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,628 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-12 08:36:20,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:36:20,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:36:20,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:36:20,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:36:20,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:36:20,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:36:20,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:36:20,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:36:20,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (1/1) ... [2022-07-12 08:36:20,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:36:20,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:36:20,677 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) [2022-07-12 08:36:20,679 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 [2022-07-12 08:36:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:36:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:36:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:36:20,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:36:20,745 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:36:20,745 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:36:20,866 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:36:20,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:36:20,871 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:36:20,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:36:20 BoogieIcfgContainer [2022-07-12 08:36:20,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:36:20,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:36:20,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:36:20,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:36:20,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:36:20" (1/3) ... [2022-07-12 08:36:20,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415fe812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:36:20, skipping insertion in model container [2022-07-12 08:36:20,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:20" (2/3) ... [2022-07-12 08:36:20,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415fe812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:36:20, skipping insertion in model container [2022-07-12 08:36:20,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:36:20" (3/3) ... [2022-07-12 08:36:20,896 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_1.i [2022-07-12 08:36:20,905 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:36:20,905 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:36:20,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:36:20,940 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@37bf29bd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9b44fd2 [2022-07-12 08:36:20,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:36:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2022-07-12 08:36:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:36:20,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:36:20,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:36:20,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:36:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:36:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-12 08:36:20,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:36:20,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075181068] [2022-07-12 08:36:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:36:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:36:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:36:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:36:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:36:21,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075181068] [2022-07-12 08:36:21,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075181068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:36:21,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:36:21,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:36:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708997849] [2022-07-12 08:36:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:36:21,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:36:21,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:36:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:36:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:36:21,120 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 08:36:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:36:21,134 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-12 08:36:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:36:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-12 08:36:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:36:21,141 INFO L225 Difference]: With dead ends: 47 [2022-07-12 08:36:21,142 INFO L226 Difference]: Without dead ends: 19 [2022-07-12 08:36:21,144 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 [2022-07-12 08:36:21,146 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2022-07-12 08:36:21,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:36:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-12 08:36:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-12 08:36:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-07-12 08:36:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-12 08:36:21,169 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-12 08:36:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:36:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-12 08:36:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 08:36:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-12 08:36:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:36:21,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:36:21,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:36:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:36:21,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:36:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:36:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-12 08:36:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:36:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626711072] [2022-07-12 08:36:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:36:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:36:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:36:21,201 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 08:36:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 08:36:21,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 08:36:21,226 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 08:36:21,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-12 08:36:21,229 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-12 08:36:21,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:36:21,232 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 08:36:21,235 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 08:36:21,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 08:36:21 BoogieIcfgContainer [2022-07-12 08:36:21,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 08:36:21,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 08:36:21,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 08:36:21,253 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 08:36:21,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:36:20" (3/4) ... [2022-07-12 08:36:21,255 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 08:36:21,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 08:36:21,257 INFO L158 Benchmark]: Toolchain (without parser) took 885.88ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 40.6MB in the beginning and 58.1MB in the end (delta: -17.5MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2022-07-12 08:36:21,258 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 73.4MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:36:21,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.05ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 40.3MB in the beginning and 70.9MB in the end (delta: -30.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-12 08:36:21,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.66ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 68.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 08:36:21,262 INFO L158 Benchmark]: Boogie Preprocessor took 24.58ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:36:21,262 INFO L158 Benchmark]: RCFGBuilder took 218.96ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 57.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 08:36:21,263 INFO L158 Benchmark]: TraceAbstraction took 365.66ms. Allocated memory is still 94.4MB. Free memory was 56.7MB in the beginning and 58.5MB in the end (delta: -1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:36:21,263 INFO L158 Benchmark]: Witness Printer took 2.60ms. Allocated memory is still 94.4MB. Free memory was 58.5MB in the beginning and 58.1MB in the end (delta: 418.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 08:36:21,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 73.4MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.05ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 40.3MB in the beginning and 70.9MB in the end (delta: -30.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.66ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 68.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.58ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 67.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 218.96ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 57.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 365.66ms. Allocated memory is still 94.4MB. Free memory was 56.7MB in the beginning and 58.5MB in the end (delta: -1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.60ms. Allocated memory is still 94.4MB. Free memory was 58.5MB in the beginning and 58.1MB in the end (delta: 418.5kB). 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 93. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.2f && IN < 0.2f) [L93] CALL, EXPR f(IN) [L80] 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] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] 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] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=49] [L102] reach_error() VAL [IN=49] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 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, 31 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, 31 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=27occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2022-07-12 08:36:21,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/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/combinations/gcd_2+newton_1_1.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 dfa1882e30013b6f8b781e69284faf3ca8a3ed1438da7b9df498de897a322653 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:36:23,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:36:23,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:36:23,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:36:23,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:36:23,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:36:23,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:36:23,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:36:23,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:36:23,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:36:23,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:36:23,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:36:23,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:36:23,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:36:23,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:36:23,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:36:23,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:36:23,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:36:23,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:36:23,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:36:23,092 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:36:23,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:36:23,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:36:23,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:36:23,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:36:23,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:36:23,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:36:23,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:36:23,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:36:23,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:36:23,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:36:23,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:36:23,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:36:23,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:36:23,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:36:23,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:36:23,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:36:23,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:36:23,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:36:23,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:36:23,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:36:23,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:36:23,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 08:36:23,152 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:36:23,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:36:23,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:36:23,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:36:23,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:36:23,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:36:23,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:36:23,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:36:23,154 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:36:23,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:36:23,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:36:23,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:36:23,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:36:23,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:36:23,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:36:23,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:36:23,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 08:36:23,156 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 08:36:23,156 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 08:36:23,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:36:23,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:36:23,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:36:23,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:36:23,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:36:23,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:36:23,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:36:23,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:36:23,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:36:23,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:36:23,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:36:23,158 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 08:36:23,159 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 08:36:23,159 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:36:23,159 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:36:23,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:36:23,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 08:36:23,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa1882e30013b6f8b781e69284faf3ca8a3ed1438da7b9df498de897a322653 [2022-07-12 08:36:23,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:36:23,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:36:23,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:36:23,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:36:23,471 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:36:23,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-12 08:36:23,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cfed560d/b02cc52f125f44a69f59ab9be15faf25/FLAG088f9a549 [2022-07-12 08:36:23,847 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:36:23,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-12 08:36:23,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cfed560d/b02cc52f125f44a69f59ab9be15faf25/FLAG088f9a549 [2022-07-12 08:36:24,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cfed560d/b02cc52f125f44a69f59ab9be15faf25 [2022-07-12 08:36:24,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:36:24,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:36:24,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:36:24,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:36:24,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:36:24,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a7d9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24, skipping insertion in model container [2022-07-12 08:36:24,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:36:24,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:36:24,409 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/combinations/gcd_2+newton_1_1.i[1226,1239] [2022-07-12 08:36:24,427 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/combinations/gcd_2+newton_1_1.i[2820,2833] [2022-07-12 08:36:24,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:36:24,441 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:36:24,473 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/combinations/gcd_2+newton_1_1.i[1226,1239] [2022-07-12 08:36:24,503 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/combinations/gcd_2+newton_1_1.i[2820,2833] [2022-07-12 08:36:24,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:36:24,517 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:36:24,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24 WrapperNode [2022-07-12 08:36:24,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:36:24,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:36:24,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:36:24,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:36:24,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,572 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-12 08:36:24,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:36:24,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:36:24,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:36:24,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:36:24,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:36:24,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:36:24,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:36:24,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:36:24,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (1/1) ... [2022-07-12 08:36:24,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:36:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:36:24,665 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) [2022-07-12 08:36:24,672 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 [2022-07-12 08:36:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:36:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 08:36:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:36:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:36:24,782 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:36:24,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:36:30,732 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:36:30,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:36:30,740 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 08:36:30,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:36:30 BoogieIcfgContainer [2022-07-12 08:36:30,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:36:30,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:36:30,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:36:30,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:36:30,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:36:24" (1/3) ... [2022-07-12 08:36:30,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce9d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:36:30, skipping insertion in model container [2022-07-12 08:36:30,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:36:24" (2/3) ... [2022-07-12 08:36:30,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce9d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:36:30, skipping insertion in model container [2022-07-12 08:36:30,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:36:30" (3/3) ... [2022-07-12 08:36:30,751 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_1.i [2022-07-12 08:36:30,772 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:36:30,772 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:36:30,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:36:30,824 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@3d6a6caf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7428d453 [2022-07-12 08:36:30,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:36:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2022-07-12 08:36:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:36:30,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:36:30,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:36:30,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:36:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:36:30,851 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-12 08:36:30,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:36:30,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3556290] [2022-07-12 08:36:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:36:30,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:36:30,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:36:30,866 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) [2022-07-12 08:36:30,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 08:36:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:36:31,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 08:36:31,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:36:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:36:31,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:36:31,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 08:36:31,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3556290] [2022-07-12 08:36:31,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3556290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:36:31,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:36:31,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:36:31,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638112086] [2022-07-12 08:36:31,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:36:31,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:36:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 08:36:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:36:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:36:31,817 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 08:36:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:36:31,826 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-12 08:36:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:36:31,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-12 08:36:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:36:31,832 INFO L225 Difference]: With dead ends: 47 [2022-07-12 08:36:31,833 INFO L226 Difference]: Without dead ends: 19 [2022-07-12 08:36:31,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:36:31,837 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2022-07-12 08:36:31,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:36:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-12 08:36:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-12 08:36:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-07-12 08:36:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-12 08:36:31,877 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-12 08:36:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:36:31,878 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-12 08:36:31,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 08:36:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-12 08:36:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 08:36:31,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:36:31,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:36:31,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 08:36:32,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 08:36:32,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:36:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:36:32,082 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-12 08:36:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 08:36:32,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428603464] [2022-07-12 08:36:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:36:32,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 08:36:32,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 08:36:32,085 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) [2022-07-12 08:36:32,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process