./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3a877d22 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/MutualRecursion_1a.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 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:49:17,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:49:17,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:49:17,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:49:17,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:49:17,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:49:17,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:49:17,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:49:17,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:49:17,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:49:17,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:49:17,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:49:17,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:49:17,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:49:17,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:49:17,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:49:17,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:49:17,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:49:17,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:49:17,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:49:17,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:49:17,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:49:17,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:49:17,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:49:17,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:49:17,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:49:17,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:49:17,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:49:17,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:49:17,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:49:17,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:49:17,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:49:17,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:49:17,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:49:17,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:49:17,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:49:17,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:49:17,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:49:17,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:49:17,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:49:17,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:49:17,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-15 16:49:17,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:49:17,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:49:17,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:49:17,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:49:17,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:49:17,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:49:17,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:49:17,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:49:17,922 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:49:17,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:49:17,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:49:17,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:49:17,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:49:17,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 16:49:17,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:49:17,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 16:49:17,923 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-15 16:49:17,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:49:17,924 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:49:17,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 16:49:17,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:49:17,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:49:17,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:49:17,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:49:17,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:49:17,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:49:17,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 16:49:17,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:49:17,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:49:17,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 16:49:17,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:49:17,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2021-12-15 16:49:18,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:49:18,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:49:18,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:49:18,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:49:18,151 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:49:18,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-12-15 16:49:18,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/499e8c100/69741473aee74ed4b4f8fb323491a6c5/FLAG632d45498 [2021-12-15 16:49:18,657 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:49:18,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2021-12-15 16:49:18,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/499e8c100/69741473aee74ed4b4f8fb323491a6c5/FLAG632d45498 [2021-12-15 16:49:18,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/499e8c100/69741473aee74ed4b4f8fb323491a6c5 [2021-12-15 16:49:18,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:49:18,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:49:18,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:49:18,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:49:18,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:49:18,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22289a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18, skipping insertion in model container [2021-12-15 16:49:18,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:49:18,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:49:18,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:49:18,862 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:49:18,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:49:18,901 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:49:18,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18 WrapperNode [2021-12-15 16:49:18,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:49:18,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:49:18,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:49:18,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:49:18,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,949 INFO L137 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2021-12-15 16:49:18,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:49:18,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:49:18,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:49:18,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:49:18,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:49:18,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:49:18,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:49:18,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:49:18,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:49:18,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:19,002 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) [2021-12-15 16:49:19,024 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 [2021-12-15 16:49:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 16:49:19,037 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 16:49:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-12-15 16:49:19,037 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-12-15 16:49:19,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:49:19,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:49:19,072 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:49:19,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:49:19,206 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:49:19,211 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:49:19,212 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 16:49:19,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:49:19 BoogieIcfgContainer [2021-12-15 16:49:19,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:49:19,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:49:19,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:49:19,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:49:19,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:49:18" (1/3) ... [2021-12-15 16:49:19,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208e6b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:49:19, skipping insertion in model container [2021-12-15 16:49:19,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (2/3) ... [2021-12-15 16:49:19,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208e6b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:49:19, skipping insertion in model container [2021-12-15 16:49:19,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:49:19" (3/3) ... [2021-12-15 16:49:19,238 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2021-12-15 16:49:19,241 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:49:19,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-12-15 16:49:19,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:49:19,301 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 [2021-12-15 16:49:19,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-12-15 16:49:19,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 25 states have (on average 1.48) internal successors, (37), 35 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-15 16:49:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:49:19,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:19,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:49:19,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-12-15 16:49:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2073143902, now seen corresponding path program 1 times [2021-12-15 16:49:19,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:19,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320931206] [2021-12-15 16:49:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:19,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:19,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 16:49:19,383 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 16:49:19,388 INFO L158 Benchmark]: Toolchain (without parser) took 691.07ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 39.1MB in the beginning and 44.3MB in the end (delta: -5.3MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-12-15 16:49:19,389 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 51.3MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:49:19,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.28ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 38.8MB in the beginning and 65.5MB in the end (delta: -26.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:49:19,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.25ms. Allocated memory is still 86.0MB. Free memory was 65.5MB in the beginning and 64.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:49:19,391 INFO L158 Benchmark]: Boogie Preprocessor took 24.98ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 63.2MB in the end (delta: 740.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:49:19,392 INFO L158 Benchmark]: RCFGBuilder took 256.30ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 54.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:49:19,395 INFO L158 Benchmark]: TraceAbstraction took 152.62ms. Allocated memory is still 86.0MB. Free memory was 53.4MB in the beginning and 44.3MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:49:19,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 51.3MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.28ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 38.8MB in the beginning and 65.5MB in the end (delta: -26.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.25ms. Allocated memory is still 86.0MB. Free memory was 65.5MB in the beginning and 64.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.98ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 63.2MB in the end (delta: 740.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.30ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 54.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 152.62ms. Allocated memory is still 86.0MB. Free memory was 53.4MB in the beginning and 44.3MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 16:49:19,429 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 No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*64bit*_Bitvector*.epf No suitable settings file found using Overflow*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable