./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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/termination-crafted/RecursiveNonterminating-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f8a3a89d23e6eea442350a087b041d706cddc1ad074ca5db49c6b5ba731ff0d3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 00:30:01,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:30:01,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:30:01,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:30:01,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:30:01,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:30:01,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:30:01,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:30:01,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:30:01,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:30:01,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:30:01,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:30:01,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:30:01,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:30:01,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:30:01,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:30:01,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:30:01,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:30:01,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:30:01,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:30:01,898 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:30:01,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:30:01,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:30:01,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:30:01,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:30:01,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:30:01,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:30:01,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:30:01,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:30:01,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:30:01,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:30:01,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:30:01,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:30:01,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:30:01,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:30:01,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:30:01,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:30:01,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:30:01,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:30:01,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:30:01,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:30:01,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:30:01,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-22 00:30:01,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:30:01,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:30:01,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:30:01,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:30:01,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:30:01,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:30:01,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:30:01,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:30:01,950 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:30:01,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:30:01,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:30:01,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:30:01,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:30:01,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:30:01,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:30:01,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:30:01,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:30:01,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:30:01,952 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:30:01,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:30:01,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:30:01,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:30:01,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:30:01,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:30:01,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:30:01,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:30:01,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:30:01,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:30:01,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:30:01,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:30:01,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8a3a89d23e6eea442350a087b041d706cddc1ad074ca5db49c6b5ba731ff0d3 [2022-07-22 00:30:02,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:30:02,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:30:02,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:30:02,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:30:02,278 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:30:02,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c [2022-07-22 00:30:02,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c03d7b1/145bcad38f7d4ec58199714ac1cda7a7/FLAGbb246dfbe [2022-07-22 00:30:02,663 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:30:02,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-2.c [2022-07-22 00:30:02,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c03d7b1/145bcad38f7d4ec58199714ac1cda7a7/FLAGbb246dfbe [2022-07-22 00:30:02,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c03d7b1/145bcad38f7d4ec58199714ac1cda7a7 [2022-07-22 00:30:02,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:30:02,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:30:02,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:30:02,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:30:02,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:30:02,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1bee0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02, skipping insertion in model container [2022-07-22 00:30:02,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:30:02,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:30:02,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:30:02,821 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:30:02,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:30:02,867 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:30:02,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02 WrapperNode [2022-07-22 00:30:02,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:30:02,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:30:02,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:30:02,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:30:02,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,895 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2022-07-22 00:30:02,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:30:02,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:30:02,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:30:02,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:30:02,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:30:02,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:30:02,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:30:02,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:30:02,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (1/1) ... [2022-07-22 00:30:02,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:30:02,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:30:02,937 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) [2022-07-22 00:30:02,956 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 [2022-07-22 00:30:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-07-22 00:30:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-07-22 00:30:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:30:02,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:30:03,010 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:30:03,012 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:30:03,124 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:30:03,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:30:03,129 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 00:30:03,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:30:03 BoogieIcfgContainer [2022-07-22 00:30:03,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:30:03,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:30:03,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:30:03,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:30:03,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:30:02" (1/3) ... [2022-07-22 00:30:03,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4958109e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:30:03, skipping insertion in model container [2022-07-22 00:30:03,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:02" (2/3) ... [2022-07-22 00:30:03,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4958109e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:30:03, skipping insertion in model container [2022-07-22 00:30:03,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:30:03" (3/3) ... [2022-07-22 00:30:03,139 INFO L111 eAbstractionObserver]: Analyzing ICFG RecursiveNonterminating-2.c [2022-07-22 00:30:03,149 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:30:03,149 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-07-22 00:30:03,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:30:03,187 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=FINITE_AUTOMATA, 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@6ff99738, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f7cd0c1 [2022-07-22 00:30:03,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-22 00:30:03,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.5625) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 00:30:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-22 00:30:03,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:30:03,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-22 00:30:03,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-22 00:30:03,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:30:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash 50709, now seen corresponding path program 1 times [2022-07-22 00:30:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:30:03,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468221679] [2022-07-22 00:30:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:30:03,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:30:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:30:03,254 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 00:30:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 00:30:03,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 00:30:03,272 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 00:30:03,273 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-07-22 00:30:03,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-07-22 00:30:03,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-07-22 00:30:03,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-07-22 00:30:03,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-07-22 00:30:03,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-07-22 00:30:03,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-07-22 00:30:03,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-07-22 00:30:03,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:30:03,288 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 00:30:03,293 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 00:30:03,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:30:03 BoogieIcfgContainer [2022-07-22 00:30:03,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 00:30:03,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 00:30:03,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 00:30:03,311 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 00:30:03,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:30:03" (3/4) ... [2022-07-22 00:30:03,313 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 00:30:03,340 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 00:30:03,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 00:30:03,344 INFO L158 Benchmark]: Toolchain (without parser) took 656.43ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 43.5MB in the beginning and 55.9MB in the end (delta: -12.4MB). Peak memory consumption was 345.7kB. Max. memory is 16.1GB. [2022-07-22 00:30:03,345 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 44.2MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:30:03,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.26ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 47.4MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 00:30:03,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.22ms. Allocated memory is still 62.9MB. Free memory was 47.4MB in the beginning and 45.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 00:30:03,345 INFO L158 Benchmark]: Boogie Preprocessor took 14.49ms. Allocated memory is still 62.9MB. Free memory was 45.9MB in the beginning and 45.2MB in the end (delta: 713.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 00:30:03,346 INFO L158 Benchmark]: RCFGBuilder took 218.37ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 36.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 00:30:03,346 INFO L158 Benchmark]: TraceAbstraction took 177.39ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 35.8MB in the beginning and 57.5MB in the end (delta: -21.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-07-22 00:30:03,346 INFO L158 Benchmark]: Witness Printer took 30.48ms. Allocated memory is still 75.5MB. Free memory was 57.1MB in the beginning and 55.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 00:30:03,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 44.2MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.26ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 47.4MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.22ms. Allocated memory is still 62.9MB. Free memory was 47.4MB in the beginning and 45.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.49ms. Allocated memory is still 62.9MB. Free memory was 45.9MB in the beginning and 45.2MB in the end (delta: 713.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 218.37ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 36.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 177.39ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 35.8MB in the beginning and 57.5MB in the end (delta: -21.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Witness Printer took 30.48ms. Allocated memory is still 75.5MB. Free memory was 57.1MB in the beginning and 55.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 18]: integer overflow possible integer overflow possible We found a FailurePath: [L17] int n = __VERIFIER_nondet_int(); [L18] n + 1 VAL [n=2147483647] - UnprovableResult [Line: 12]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 proved your program to be incorrect! [2022-07-22 00:30:03,382 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)