./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 35987657 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-?-3598765 [2022-07-21 07:14:54,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:14:54,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:14:54,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:14:54,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:14:54,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:14:54,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:14:54,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:14:54,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:14:54,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:14:54,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:14:54,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:14:54,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:14:54,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:14:54,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:14:54,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:14:54,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:14:54,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:14:54,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:14:54,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:14:54,455 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:14:54,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:14:54,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:14:54,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:14:54,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:14:54,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:14:54,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:14:54,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:14:54,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:14:54,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:14:54,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:14:54,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:14:54,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:14:54,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:14:54,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:14:54,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:14:54,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:14:54,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:14:54,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:14:54,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:14:54,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:14:54,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:14:54,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:14:54,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:14:54,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:14:54,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:14:54,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:14:54,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:14:54,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:14:54,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:14:54,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:14:54,519 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:14:54,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:14:54,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:14:54,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:14:54,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:14:54,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:14:54,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:14:54,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:14:54,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:14:54,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:14:54,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:14:54,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:14:54,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:14:54,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:14:54,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:14:54,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:14:54,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:14:54,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:14:54,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:14:54,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:14:54,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:14:54,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:14:54,524 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:14:54,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:14:54,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:14:54,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa1882e30013b6f8b781e69284faf3ca8a3ed1438da7b9df498de897a322653 [2022-07-21 07:14:54,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:14:54,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:14:54,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:14:54,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:14:54,867 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:14:54,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-21 07:14:54,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6236ad0a3/90e18163de7848d58229a794f0425882/FLAGe45c0fe9a [2022-07-21 07:14:55,370 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:14:55,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-21 07:14:55,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6236ad0a3/90e18163de7848d58229a794f0425882/FLAGe45c0fe9a [2022-07-21 07:14:55,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6236ad0a3/90e18163de7848d58229a794f0425882 [2022-07-21 07:14:55,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:14:55,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:14:55,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:14:55,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:14:55,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:14:55,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7dc0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55, skipping insertion in model container [2022-07-21 07:14:55,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:14:55,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:14:55,535 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] [2022-07-21 07:14:55,582 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] [2022-07-21 07:14:55,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:14:55,589 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:14:55,598 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] [2022-07-21 07:14:55,607 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] [2022-07-21 07:14:55,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:14:55,619 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:14:55,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55 WrapperNode [2022-07-21 07:14:55,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:14:55,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:14:55,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:14:55,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:14:55,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,669 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-21 07:14:55,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:14:55,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:14:55,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:14:55,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:14:55,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:14:55,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:14:55,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:14:55,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:14:55,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (1/1) ... [2022-07-21 07:14:55,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:14:55,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:14:55,740 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) [2022-07-21 07:14:55,762 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 [2022-07-21 07:14:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:14:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:14:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:14:55,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:14:55,840 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:14:55,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:14:56,009 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:14:56,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:14:56,017 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 07:14:56,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:56 BoogieIcfgContainer [2022-07-21 07:14:56,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:14:56,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:14:56,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:14:56,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:14:56,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:14:55" (1/3) ... [2022-07-21 07:14:56,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74916e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:56, skipping insertion in model container [2022-07-21 07:14:56,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:55" (2/3) ... [2022-07-21 07:14:56,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74916e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:56, skipping insertion in model container [2022-07-21 07:14:56,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:56" (3/3) ... [2022-07-21 07:14:56,025 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_1.i [2022-07-21 07:14:56,054 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:14:56,054 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:14:56,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:14:56,138 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@421a6e1b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1513f1a8 [2022-07-21 07:14:56,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:14:56,151 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) [2022-07-21 07:14:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:14:56,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:14:56,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:14:56,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:14:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:14:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-21 07:14:56,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:14:56,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445545349] [2022-07-21 07:14:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:14:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:14:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:14:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:14:56,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:14:56,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445545349] [2022-07-21 07:14:56,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445545349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:14:56,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:14:56,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:14:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221094014] [2022-07-21 07:14:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:14:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 07:14:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:14:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 07:14:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 07:14:56,338 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) [2022-07-21 07:14:56,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:14:56,354 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-21 07:14:56,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 07:14:56,356 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 [2022-07-21 07:14:56,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:14:56,363 INFO L225 Difference]: With dead ends: 47 [2022-07-21 07:14:56,363 INFO L226 Difference]: Without dead ends: 19 [2022-07-21 07:14:56,366 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 [2022-07-21 07:14:56,370 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 [2022-07-21 07:14:56,372 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] [2022-07-21 07:14:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-21 07:14:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-21 07:14:56,401 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) [2022-07-21 07:14:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-21 07:14:56,404 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-21 07:14:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:14:56,404 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-21 07:14:56,404 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) [2022-07-21 07:14:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-21 07:14:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:14:56,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:14:56,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:14:56,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:14:56,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:14:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:14:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-21 07:14:56,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:14:56,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429329938] [2022-07-21 07:14:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:14:56,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:14:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 07:14:56,452 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 07:14:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 07:14:56,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 07:14:56,493 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 07:14:56,498 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 07:14:56,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 07:14:56,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:14:56,505 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 07:14:56,510 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 07:14:56,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:14:56 BoogieIcfgContainer [2022-07-21 07:14:56,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 07:14:56,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 07:14:56,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 07:14:56,536 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 07:14:56,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:56" (3/4) ... [2022-07-21 07:14:56,539 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 07:14:56,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 07:14:56,541 INFO L158 Benchmark]: Toolchain (without parser) took 1144.29ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.6MB in the beginning and 45.6MB in the end (delta: -17.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:14:56,541 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 52.4MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:14:56,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.66ms. Allocated memory is still 52.4MB. Free memory was 28.4MB in the beginning and 33.2MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 07:14:56,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.80ms. Allocated memory is still 52.4MB. Free memory was 33.2MB in the beginning and 31.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 07:14:56,545 INFO L158 Benchmark]: Boogie Preprocessor took 37.37ms. Allocated memory is still 52.4MB. Free memory was 31.3MB in the beginning and 30.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:14:56,547 INFO L158 Benchmark]: RCFGBuilder took 310.59ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 30.2MB in the beginning and 49.5MB in the end (delta: -19.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-07-21 07:14:56,547 INFO L158 Benchmark]: TraceAbstraction took 514.49ms. Allocated memory is still 69.2MB. Free memory was 49.0MB in the beginning and 45.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2022-07-21 07:14:56,548 INFO L158 Benchmark]: Witness Printer took 3.26ms. Allocated memory is still 69.2MB. Free memory was 45.9MB in the beginning and 45.6MB in the end (delta: 336.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 07:14:56,553 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 52.4MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.66ms. Allocated memory is still 52.4MB. Free memory was 28.4MB in the beginning and 33.2MB in the end (delta: -4.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.80ms. Allocated memory is still 52.4MB. Free memory was 33.2MB in the beginning and 31.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.37ms. Allocated memory is still 52.4MB. Free memory was 31.3MB in the beginning and 30.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 310.59ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 30.2MB in the beginning and 49.5MB in the end (delta: -19.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 514.49ms. Allocated memory is still 69.2MB. Free memory was 49.0MB in the beginning and 45.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Witness Printer took 3.26ms. Allocated memory is still 69.2MB. Free memory was 45.9MB in the beginning and 45.6MB in the end (delta: 336.3kB). 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: 0.4s, 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 [2022-07-21 07:14:56,592 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-?-3598765 [2022-07-21 07:14:58,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:14:58,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:14:58,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:14:58,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:14:58,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:14:58,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:14:58,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:14:58,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:14:58,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:14:58,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:14:58,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:14:58,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:14:58,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:14:58,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:14:58,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:14:58,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:14:58,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:14:58,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:14:58,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:14:58,479 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:14:58,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:14:58,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:14:58,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:14:58,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:14:58,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:14:58,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:14:58,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:14:58,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:14:58,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:14:58,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:14:58,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:14:58,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:14:58,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:14:58,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:14:58,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:14:58,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:14:58,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:14:58,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:14:58,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:14:58,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:14:58,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:14:58,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 07:14:58,540 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:14:58,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:14:58,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:14:58,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:14:58,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:14:58,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:14:58,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:14:58,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:14:58,544 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:14:58,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:14:58,545 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:14:58,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:14:58,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:14:58,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:14:58,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:14:58,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:14:58,546 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 07:14:58,547 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 07:14:58,547 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 07:14:58,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:14:58,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:14:58,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:14:58,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:14:58,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:14:58,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:14:58,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:14:58,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:14:58,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:14:58,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:14:58,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:14:58,550 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 07:14:58,550 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 07:14:58,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:14:58,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:14:58,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:14:58,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 07:14:58,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa1882e30013b6f8b781e69284faf3ca8a3ed1438da7b9df498de897a322653 [2022-07-21 07:14:58,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:14:58,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:14:58,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:14:58,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:14:58,883 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:14:58,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-21 07:14:58,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bf97ae4/18ae5bb83b644741a63db83afbedb042/FLAG9b8ccde3e [2022-07-21 07:14:59,358 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:14:59,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_1_1.i [2022-07-21 07:14:59,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bf97ae4/18ae5bb83b644741a63db83afbedb042/FLAG9b8ccde3e [2022-07-21 07:14:59,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bf97ae4/18ae5bb83b644741a63db83afbedb042 [2022-07-21 07:14:59,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:14:59,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:14:59,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:14:59,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:14:59,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:14:59,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:59" (1/1) ... [2022-07-21 07:14:59,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ce7c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:59, skipping insertion in model container [2022-07-21 07:14:59,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:59" (1/1) ... [2022-07-21 07:14:59,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:14:59,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:14:59,914 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] [2022-07-21 07:14:59,951 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] [2022-07-21 07:14:59,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:14:59,966 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:14:59,988 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] [2022-07-21 07:15:00,003 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] [2022-07-21 07:15:00,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:15:00,025 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:15:00,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00 WrapperNode [2022-07-21 07:15:00,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:15:00,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:15:00,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:15:00,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:15:00,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,055 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-21 07:15:00,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:15:00,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:15:00,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:15:00,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:15:00,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:15:00,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:15:00,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:15:00,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:15:00,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (1/1) ... [2022-07-21 07:15:00,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:15:00,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:15:00,118 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) [2022-07-21 07:15:00,120 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 [2022-07-21 07:15:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:15:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 07:15:00,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:15:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:15:00,201 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:15:00,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:15:06,092 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:15:06,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:15:06,097 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 07:15:06,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:06 BoogieIcfgContainer [2022-07-21 07:15:06,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:15:06,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:15:06,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:15:06,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:15:06,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:14:59" (1/3) ... [2022-07-21 07:15:06,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bf308e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:06, skipping insertion in model container [2022-07-21 07:15:06,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:00" (2/3) ... [2022-07-21 07:15:06,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bf308e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:06, skipping insertion in model container [2022-07-21 07:15:06,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:06" (3/3) ... [2022-07-21 07:15:06,115 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_1.i [2022-07-21 07:15:06,126 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:15:06,126 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:15:06,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:15:06,167 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@74389364, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bdd7d99 [2022-07-21 07:15:06,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:15:06,171 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) [2022-07-21 07:15:06,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:15:06,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:15:06,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:15:06,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:15:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:15:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-21 07:15:06,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 07:15:06,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919246091] [2022-07-21 07:15:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:15:06,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 07:15:06,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 07:15:06,196 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) [2022-07-21 07:15:06,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 07:15:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:15:07,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 07:15:07,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:15:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:15:07,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 07:15:07,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 07:15:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919246091] [2022-07-21 07:15:07,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919246091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:15:07,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:15:07,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:15:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364946707] [2022-07-21 07:15:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:15:07,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 07:15:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 07:15:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 07:15:07,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 07:15:07,140 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) [2022-07-21 07:15:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:15:07,155 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-21 07:15:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 07:15:07,157 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 [2022-07-21 07:15:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:15:07,161 INFO L225 Difference]: With dead ends: 47 [2022-07-21 07:15:07,162 INFO L226 Difference]: Without dead ends: 19 [2022-07-21 07:15:07,164 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 [2022-07-21 07:15:07,166 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 [2022-07-21 07:15:07,167 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] [2022-07-21 07:15:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-21 07:15:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-21 07:15:07,186 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) [2022-07-21 07:15:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-21 07:15:07,188 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-21 07:15:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:15:07,188 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-21 07:15:07,188 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) [2022-07-21 07:15:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-21 07:15:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 07:15:07,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:15:07,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:15:07,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 07:15:07,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 07:15:07,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:15:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:15:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-21 07:15:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 07:15:07,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799171389] [2022-07-21 07:15:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:15:07,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 07:15:07,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 07:15:07,399 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) [2022-07-21 07:15:07,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process