./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/recursive/EvenOdd03WithOverflowBug.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:07:40,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:07:40,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:07:40,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:07:40,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:07:40,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:07:40,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:07:40,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:07:40,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:07:40,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:07:40,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:07:40,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:07:40,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:07:40,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:07:40,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:07:40,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:07:40,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:07:40,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:07:40,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:07:40,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:07:40,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:07:40,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:07:40,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:07:40,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:07:40,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:07:40,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:07:40,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:07:40,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:07:40,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:07:40,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:07:40,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:07:40,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:07:40,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:07:40,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:07:40,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:07:40,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:07:40,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:07:40,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:07:40,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:07:40,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:07:40,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:07:40,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-02-21 03:07:40,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:07:40,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:07:40,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:07:40,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:07:40,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-21 03:07:40,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-21 03:07:40,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:07:40,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:07:40,898 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:07:40,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:07:40,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-21 03:07:40,900 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:07:40,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:07:40,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-21 03:07:40,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:07:40,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-21 03:07:40,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-21 03:07:40,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-21 03:07:40,901 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-02-21 03:07:40,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-21 03:07:40,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:07:40,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:07:40,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-21 03:07:40,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:07:40,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:07:40,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-21 03:07:40,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:07:40,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:07:40,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-21 03:07:40,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-21 03:07:40,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:07:40,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-21 03:07:40,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-21 03:07:40,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241 [2022-02-21 03:07:41,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:07:41,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:07:41,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:07:41,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:07:41,165 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:07:41,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2022-02-21 03:07:41,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e707f6ce/e899d4a2c86a46af8827fcd5b95c3c52/FLAG3d3c0653e [2022-02-21 03:07:41,584 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:07:41,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2022-02-21 03:07:41,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e707f6ce/e899d4a2c86a46af8827fcd5b95c3c52/FLAG3d3c0653e [2022-02-21 03:07:42,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e707f6ce/e899d4a2c86a46af8827fcd5b95c3c52 [2022-02-21 03:07:42,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:07:42,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:07:42,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:07:42,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:07:42,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:07:42,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d554236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42, skipping insertion in model container [2022-02-21 03:07:42,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:07:42,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:07:42,166 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/recursive/EvenOdd03WithOverflowBug.c[948,961] [2022-02-21 03:07:42,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:07:42,174 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:07:42,188 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/recursive/EvenOdd03WithOverflowBug.c[948,961] [2022-02-21 03:07:42,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:07:42,201 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:07:42,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42 WrapperNode [2022-02-21 03:07:42,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:07:42,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:07:42,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:07:42,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:07:42,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,232 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-02-21 03:07:42,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:07:42,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:07:42,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:07:42,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:07:42,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:07:42,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:07:42,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:07:42,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:07:42,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (1/1) ... [2022-02-21 03:07:42,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-21 03:07:42,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:07:42,295 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) [2022-02-21 03:07:42,296 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 [2022-02-21 03:07:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 03:07:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2022-02-21 03:07:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2022-02-21 03:07:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 03:07:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2022-02-21 03:07:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2022-02-21 03:07:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:07:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:07:42,372 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:07:42,374 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:07:42,501 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:07:42,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:07:42,521 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-21 03:07:42,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:07:42 BoogieIcfgContainer [2022-02-21 03:07:42,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:07:42,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-21 03:07:42,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-21 03:07:42,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-21 03:07:42,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:07:42" (1/3) ... [2022-02-21 03:07:42,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea4c5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:07:42, skipping insertion in model container [2022-02-21 03:07:42,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:07:42" (2/3) ... [2022-02-21 03:07:42,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea4c5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:07:42, skipping insertion in model container [2022-02-21 03:07:42,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:07:42" (3/3) ... [2022-02-21 03:07:42,546 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd03WithOverflowBug.c [2022-02-21 03:07:42,550 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-21 03:07:42,551 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-02-21 03:07:42,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-21 03:07:42,614 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-21 03:07:42,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-21 03:07:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-21 03:07:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-21 03:07:42,643 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:07:42,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 03:07:42,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-02-21 03:07:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:07:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1098651861, now seen corresponding path program 1 times [2022-02-21 03:07:42,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:07:42,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881086726] [2022-02-21 03:07:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:07:42,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:07:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:07:42,881 INFO L290 TraceCheckUtils]: 0: Hoare triple {34#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(27, 2);call #Ultimate.allocInit(12, 3); {34#true} is VALID [2022-02-21 03:07:42,887 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~n~0#1, main_~result~0#1, main_~mod~0#1;assume -2147483648 <= main_#t~nondet6#1 && main_#t~nondet6#1 <= 2147483647;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; {36#(<= |ULTIMATE.start_main_~n~0#1| 2147483647)} is VALID [2022-02-21 03:07:42,888 INFO L272 TraceCheckUtils]: 2: Hoare triple {36#(<= |ULTIMATE.start_main_~n~0#1| 2147483647)} call main_#t~ret7#1 := isEven(main_~n~0#1); {37#(<= |isEven_#in~n| 2147483647)} is VALID [2022-02-21 03:07:42,889 INFO L290 TraceCheckUtils]: 3: Hoare triple {37#(<= |isEven_#in~n| 2147483647)} ~n := #in~n; {38#(<= isEven_~n 2147483647)} is VALID [2022-02-21 03:07:42,889 INFO L290 TraceCheckUtils]: 4: Hoare triple {38#(<= isEven_~n 2147483647)} assume !(0 == ~n); {38#(<= isEven_~n 2147483647)} is VALID [2022-02-21 03:07:42,890 INFO L290 TraceCheckUtils]: 5: Hoare triple {38#(<= isEven_~n 2147483647)} assume !(1 == ~n); {38#(<= isEven_~n 2147483647)} is VALID [2022-02-21 03:07:42,891 INFO L290 TraceCheckUtils]: 6: Hoare triple {38#(<= isEven_~n 2147483647)} assume !(~n - 1 <= 2147483647); {35#false} is VALID [2022-02-21 03:07:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:07:42,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 03:07:42,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881086726] [2022-02-21 03:07:42,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881086726] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 03:07:42,893 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 03:07:42,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-21 03:07:42,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562195676] [2022-02-21 03:07:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 03:07:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-21 03:07:42,901 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-21 03:07:42,903 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:42,918 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:07:42,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-21 03:07:42,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 03:07:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-21 03:07:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-21 03:07:42,978 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:07:43,182 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-02-21 03:07:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-21 03:07:43,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-21 03:07:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-21 03:07:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2022-02-21 03:07:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2022-02-21 03:07:43,195 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 53 transitions. [2022-02-21 03:07:43,244 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:07:43,251 INFO L225 Difference]: With dead ends: 47 [2022-02-21 03:07:43,251 INFO L226 Difference]: Without dead ends: 26 [2022-02-21 03:07:43,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-21 03:07:43,257 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-21 03:07:43,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 101 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-21 03:07:43,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-02-21 03:07:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-02-21 03:07:43,279 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 03:07:43,279 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,280 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,281 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:07:43,284 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-21 03:07:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-02-21 03:07:43,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:07:43,285 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:07:43,285 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 26 states. [2022-02-21 03:07:43,285 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 26 states. [2022-02-21 03:07:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:07:43,288 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-02-21 03:07:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-02-21 03:07:43,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:07:43,289 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:07:43,289 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 03:07:43,289 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 03:07:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-02-21 03:07:43,293 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2022-02-21 03:07:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-21 03:07:43,293 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-02-21 03:07:43,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:07:43,294 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-02-21 03:07:43,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-21 03:07:43,294 INFO L506 BasicCegarLoop]: Found error trace [2022-02-21 03:07:43,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 03:07:43,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-21 03:07:43,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-02-21 03:07:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:07:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -301530635, now seen corresponding path program 1 times [2022-02-21 03:07:43,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:07:43,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627079336] [2022-02-21 03:07:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:07:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:07:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:07:43,321 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:07:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:07:43,374 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:07:43,374 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-21 03:07:43,376 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-02-21 03:07:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-02-21 03:07:43,378 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-02-21 03:07:43,379 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-02-21 03:07:43,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-21 03:07:43,382 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-21 03:07:43,387 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-21 03:07:43,393 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret7 := isEven(~n~0); [2022-02-21 03:07:43,394 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-21 03:07:43,398 INFO L158 Benchmark]: Toolchain (without parser) took 1392.08ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 60.0MB in the beginning and 71.1MB in the end (delta: -11.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-02-21 03:07:43,399 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 65.1MB in the beginning and 65.1MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:07:43,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.14ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 70.7MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 03:07:43,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.30ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 69.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:07:43,400 INFO L158 Benchmark]: Boogie Preprocessor took 31.62ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 68.1MB in the end (delta: 832.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:07:43,401 INFO L158 Benchmark]: RCFGBuilder took 256.71ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 56.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 03:07:43,401 INFO L158 Benchmark]: TraceAbstraction took 871.26ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 56.4MB in the beginning and 71.1MB in the end (delta: -14.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-21 03:07:43,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 65.1MB in the beginning and 65.1MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.14ms. Allocated memory is still 94.4MB. Free memory was 59.8MB in the beginning and 70.7MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.30ms. Allocated memory is still 94.4MB. Free memory was 70.7MB in the beginning and 69.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.62ms. Allocated memory is still 94.4MB. Free memory was 68.9MB in the beginning and 68.1MB in the end (delta: 832.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.71ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 56.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 871.26ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 56.4MB in the beginning and 71.1MB in the end (delta: -14.6MB). Peak memory consumption was 6.3MB. 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 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-21 03:07:43,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator