./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_3+newton_1_3.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 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:24:22,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:24:22,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:24:22,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:24:22,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:24:22,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:24:22,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:24:22,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:24:22,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:24:22,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:24:22,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:24:22,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:24:22,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:24:22,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:24:22,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:24:22,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:24:22,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:24:22,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:24:22,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:24:22,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:24:22,440 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:24:22,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:24:22,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:24:22,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:24:22,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:24:22,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:24:22,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:24:22,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:24:22,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:24:22,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:24:22,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:24:22,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:24:22,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:24:22,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:24:22,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:24:22,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:24:22,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:24:22,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:24:22,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:24:22,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:24:22,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:24:22,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:24:22,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:24:22,468 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:24:22,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:24:22,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:24:22,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:24:22,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:24:22,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:24:22,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:24:22,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:24:22,470 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:24:22,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:24:22,471 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:24:22,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:24:22,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:24:22,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:24:22,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:24:22,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:24:22,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:24:22,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:24:22,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:24:22,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:24:22,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:24:22,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:24:22,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:24:22,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:24:22,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:24:22,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:24:22,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:24:22,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:24:22,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:24:22,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:24:22,474 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:24:22,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:24:22,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:24:22,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a [2022-07-13 20:24:22,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:24:22,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:24:22,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:24:22,634 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:24:22,635 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:24:22,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2022-07-13 20:24:22,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6864733be/36385f5bcd604279a359d1e4e1bb5c17/FLAGa5964af31 [2022-07-13 20:24:22,963 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:24:22,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2022-07-13 20:24:22,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6864733be/36385f5bcd604279a359d1e4e1bb5c17/FLAGa5964af31 [2022-07-13 20:24:23,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6864733be/36385f5bcd604279a359d1e4e1bb5c17 [2022-07-13 20:24:23,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:24:23,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:24:23,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:24:23,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:24:23,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:24:23,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59071c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23, skipping insertion in model container [2022-07-13 20:24:23,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:24:23,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:24:23,599 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_3+newton_1_3.i[1226,1239] [2022-07-13 20:24:23,627 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_3+newton_1_3.i[2820,2833] [2022-07-13 20:24:23,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:24:23,635 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:24:23,648 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_3+newton_1_3.i[1226,1239] [2022-07-13 20:24:23,654 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_3+newton_1_3.i[2820,2833] [2022-07-13 20:24:23,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:24:23,662 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:24:23,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23 WrapperNode [2022-07-13 20:24:23,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:24:23,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:24:23,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:24:23,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:24:23,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,686 INFO L137 Inliner]: procedures = 27, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 78 [2022-07-13 20:24:23,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:24:23,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:24:23,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:24:23,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:24:23,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:24:23,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:24:23,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:24:23,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:24:23,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (1/1) ... [2022-07-13 20:24:23,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:24:23,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:24:23,738 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) [2022-07-13 20:24:23,746 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 [2022-07-13 20:24:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:24:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:24:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:24:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:24:23,814 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:24:23,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:24:23,930 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:24:23,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:24:23,935 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:24:23,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:24:23 BoogieIcfgContainer [2022-07-13 20:24:23,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:24:23,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:24:23,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:24:23,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:24:23,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:24:23" (1/3) ... [2022-07-13 20:24:23,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228a570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:24:23, skipping insertion in model container [2022-07-13 20:24:23,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:23" (2/3) ... [2022-07-13 20:24:23,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228a570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:24:23, skipping insertion in model container [2022-07-13 20:24:23,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:24:23" (3/3) ... [2022-07-13 20:24:23,944 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_3.i [2022-07-13 20:24:23,958 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:24:23,968 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:24:24,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:24:24,011 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@4085a00b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5badfd44 [2022-07-13 20:24:24,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:24:24,016 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) [2022-07-13 20:24:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:24:24,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:24:24,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:24:24,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:24:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:24:24,026 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-13 20:24:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:24:24,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426537276] [2022-07-13 20:24:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:24:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:24:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:24:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:24:24,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:24:24,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426537276] [2022-07-13 20:24:24,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426537276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:24:24,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:24:24,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:24:24,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44670452] [2022-07-13 20:24:24,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:24:24,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:24:24,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:24:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:24:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:24:24,199 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) [2022-07-13 20:24:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:24:24,227 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-13 20:24:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:24:24,229 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 [2022-07-13 20:24:24,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:24:24,233 INFO L225 Difference]: With dead ends: 47 [2022-07-13 20:24:24,233 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 20:24:24,235 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 [2022-07-13 20:24:24,237 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 [2022-07-13 20:24:24,238 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] [2022-07-13 20:24:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 20:24:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-13 20:24:24,274 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) [2022-07-13 20:24:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-13 20:24:24,275 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-13 20:24:24,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:24:24,276 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-13 20:24:24,276 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) [2022-07-13 20:24:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-13 20:24:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:24:24,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:24:24,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:24:24,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:24:24,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:24:24,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:24:24,279 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-13 20:24:24,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:24:24,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905262622] [2022-07-13 20:24:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:24:24,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:24:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:24:24,307 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 20:24:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 20:24:24,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 20:24:24,336 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 20:24:24,337 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 20:24:24,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-13 20:24:24,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:24:24,342 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 20:24:24,346 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 20:24:24,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:24:24 BoogieIcfgContainer [2022-07-13 20:24:24,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 20:24:24,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 20:24:24,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 20:24:24,367 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 20:24:24,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:24:23" (3/4) ... [2022-07-13 20:24:24,369 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 20:24:24,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 20:24:24,371 INFO L158 Benchmark]: Toolchain (without parser) took 963.76ms. Allocated memory is still 125.8MB. Free memory was 97.5MB in the beginning and 96.5MB in the end (delta: 1.0MB). Peak memory consumption was 776.5kB. Max. memory is 16.1GB. [2022-07-13 20:24:24,372 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 51.4MB in the beginning and 51.3MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:24:24,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.53ms. Allocated memory is still 125.8MB. Free memory was 97.5MB in the beginning and 99.8MB in the end (delta: -2.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-07-13 20:24:24,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.00ms. Allocated memory is still 125.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 20:24:24,376 INFO L158 Benchmark]: Boogie Preprocessor took 21.60ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 96.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:24:24,376 INFO L158 Benchmark]: RCFGBuilder took 221.12ms. Allocated memory is still 125.8MB. Free memory was 96.7MB in the beginning and 85.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 20:24:24,376 INFO L158 Benchmark]: TraceAbstraction took 428.02ms. Allocated memory is still 125.8MB. Free memory was 85.6MB in the beginning and 97.1MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:24:24,377 INFO L158 Benchmark]: Witness Printer took 2.52ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 96.5MB in the end (delta: 565.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 20:24:24,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 51.4MB in the beginning and 51.3MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.53ms. Allocated memory is still 125.8MB. Free memory was 97.5MB in the beginning and 99.8MB in the end (delta: -2.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.00ms. Allocated memory is still 125.8MB. Free memory was 99.8MB in the beginning and 97.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.60ms. Allocated memory is still 125.8MB. Free memory was 97.7MB in the beginning and 96.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 221.12ms. Allocated memory is still 125.8MB. Free memory was 96.7MB in the beginning and 85.9MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 428.02ms. Allocated memory is still 125.8MB. Free memory was 85.6MB in the beginning and 97.1MB in the end (delta: -11.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.52ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 96.5MB in the end (delta: 565.5kB). 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 > -0.6f && IN < 0.6f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [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 [2022-07-13 20:24:24,408 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_3+newton_1_3.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 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:24:26,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:24:26,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:24:26,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:24:26,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:24:26,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:24:26,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:24:26,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:24:26,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:24:26,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:24:26,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:24:26,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:24:26,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:24:26,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:24:26,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:24:26,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:24:26,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:24:26,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:24:26,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:24:26,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:24:26,254 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:24:26,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:24:26,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:24:26,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:24:26,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:24:26,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:24:26,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:24:26,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:24:26,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:24:26,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:24:26,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:24:26,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:24:26,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:24:26,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:24:26,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:24:26,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:24:26,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:24:26,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:24:26,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:24:26,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:24:26,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:24:26,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:24:26,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 20:24:26,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:24:26,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:24:26,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:24:26,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:24:26,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:24:26,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:24:26,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:24:26,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:24:26,298 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:24:26,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:24:26,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:24:26,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:24:26,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:24:26,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:24:26,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:24:26,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:24:26,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 20:24:26,300 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 20:24:26,300 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 20:24:26,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:24:26,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:24:26,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:24:26,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:24:26,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:24:26,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:24:26,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:24:26,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:24:26,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:24:26,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:24:26,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:24:26,302 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 20:24:26,302 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 20:24:26,302 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:24:26,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:24:26,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:24:26,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 20:24:26,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17445458ba8d623c3c0fdc1c0c03b23eaf5b75fd03e8e26d6837d08cfa4b709a [2022-07-13 20:24:26,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:24:26,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:24:26,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:24:26,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:24:26,547 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:24:26,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2022-07-13 20:24:26,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e205f5d2/b38b69d3185742c3b1eb92e6d87e035e/FLAG0a39da4ac [2022-07-13 20:24:27,006 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:24:27,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i [2022-07-13 20:24:27,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e205f5d2/b38b69d3185742c3b1eb92e6d87e035e/FLAG0a39da4ac [2022-07-13 20:24:27,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e205f5d2/b38b69d3185742c3b1eb92e6d87e035e [2022-07-13 20:24:27,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:24:27,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:24:27,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:24:27,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:24:27,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:24:27,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e8e989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27, skipping insertion in model container [2022-07-13 20:24:27,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:24:27,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:24:27,235 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_3+newton_1_3.i[1226,1239] [2022-07-13 20:24:27,249 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_3+newton_1_3.i[2820,2833] [2022-07-13 20:24:27,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:24:27,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:24:27,292 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_3+newton_1_3.i[1226,1239] [2022-07-13 20:24:27,298 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_1_3.i[2820,2833] [2022-07-13 20:24:27,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:24:27,307 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:24:27,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27 WrapperNode [2022-07-13 20:24:27,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:24:27,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:24:27,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:24:27,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:24:27,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,338 INFO L137 Inliner]: procedures = 28, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 73 [2022-07-13 20:24:27,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:24:27,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:24:27,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:24:27,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:24:27,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:24:27,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:24:27,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:24:27,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:24:27,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (1/1) ... [2022-07-13 20:24:27,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:24:27,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:24:27,402 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) [2022-07-13 20:24:27,404 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 [2022-07-13 20:24:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:24:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 20:24:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:24:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:24:27,480 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:24:27,481 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:24:33,266 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:24:33,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:24:33,280 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:24:33,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:24:33 BoogieIcfgContainer [2022-07-13 20:24:33,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:24:33,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:24:33,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:24:33,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:24:33,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:24:27" (1/3) ... [2022-07-13 20:24:33,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b2a49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:24:33, skipping insertion in model container [2022-07-13 20:24:33,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:24:27" (2/3) ... [2022-07-13 20:24:33,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b2a49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:24:33, skipping insertion in model container [2022-07-13 20:24:33,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:24:33" (3/3) ... [2022-07-13 20:24:33,293 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_3.i [2022-07-13 20:24:33,302 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:24:33,302 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:24:33,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:24:33,340 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@2023cf35, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47ba8b2c [2022-07-13 20:24:33,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:24:33,343 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) [2022-07-13 20:24:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:24:33,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:24:33,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:24:33,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:24:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:24:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-07-13 20:24:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 20:24:33,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762536899] [2022-07-13 20:24:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:24:33,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 20:24:33,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 20:24:33,361 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) [2022-07-13 20:24:33,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 20:24:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:24:34,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 20:24:34,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:24:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:24:34,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:24:34,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 20:24:34,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762536899] [2022-07-13 20:24:34,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762536899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:24:34,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:24:34,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:24:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934712849] [2022-07-13 20:24:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:24:34,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:24:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 20:24:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:24:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:24:34,258 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) [2022-07-13 20:24:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:24:34,267 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-07-13 20:24:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:24:34,269 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 [2022-07-13 20:24:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:24:34,273 INFO L225 Difference]: With dead ends: 47 [2022-07-13 20:24:34,273 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 20:24:34,275 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 [2022-07-13 20:24:34,277 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 [2022-07-13 20:24:34,277 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] [2022-07-13 20:24:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 20:24:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-13 20:24:34,294 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) [2022-07-13 20:24:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-13 20:24:34,295 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-07-13 20:24:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:24:34,295 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-13 20:24:34,295 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) [2022-07-13 20:24:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-13 20:24:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 20:24:34,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:24:34,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:24:34,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:24:34,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 20:24:34,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:24:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:24:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-07-13 20:24:34,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 20:24:34,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416977476] [2022-07-13 20:24:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:24:34,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 20:24:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 20:24:34,524 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) [2022-07-13 20:24:34,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process