./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination 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/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 01:24:07,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:24:07,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:24:07,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:24:07,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:24:07,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:24:07,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:24:07,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:24:07,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:24:07,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:24:07,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:24:07,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:24:07,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:24:07,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:24:07,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:24:07,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:24:07,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:24:07,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:24:07,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:24:07,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:24:07,212 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:24:07,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:24:07,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:24:07,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:24:07,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:24:07,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:24:07,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:24:07,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:24:07,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:24:07,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:24:07,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:24:07,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:24:07,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:24:07,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:24:07,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:24:07,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:24:07,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:24:07,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:24:07,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:24:07,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:24:07,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:24:07,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:24:07,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:24:07,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:24:07,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:24:07,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:24:07,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:24:07,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:24:07,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:24:07,280 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:24:07,280 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:24:07,281 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:24:07,281 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:24:07,282 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:24:07,282 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:24:07,282 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:24:07,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:24:07,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:24:07,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:24:07,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:24:07,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:24:07,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:24:07,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:24:07,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:24:07,284 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:24:07,284 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:24:07,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:24:07,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:24:07,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:24:07,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:24:07,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:24:07,288 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:24:07,288 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 [2022-07-22 01:24:07,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:24:07,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:24:07,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:24:07,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:24:07,655 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:24:07,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2022-07-22 01:24:07,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202a51156/e7c3224ff31a4a6f8c21652fb7d79b8a/FLAGd0a3c717e [2022-07-22 01:24:08,149 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:24:08,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2022-07-22 01:24:08,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202a51156/e7c3224ff31a4a6f8c21652fb7d79b8a/FLAGd0a3c717e [2022-07-22 01:24:08,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202a51156/e7c3224ff31a4a6f8c21652fb7d79b8a [2022-07-22 01:24:08,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:24:08,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:24:08,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:24:08,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:24:08,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:24:08,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786205ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08, skipping insertion in model container [2022-07-22 01:24:08,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:24:08,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:24:08,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:24:08,721 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:24:08,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:24:08,750 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:24:08,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08 WrapperNode [2022-07-22 01:24:08,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:24:08,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:24:08,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:24:08,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:24:08,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,807 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-07-22 01:24:08,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:24:08,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:24:08,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:24:08,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:24:08,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:24:08,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:24:08,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:24:08,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:24:08,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:24:08,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:24:08,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:24:08,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-22 01:24:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:24:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:24:08,978 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:24:08,979 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:24:09,066 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:24:09,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:24:09,072 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 01:24:09,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:24:09 BoogieIcfgContainer [2022-07-22 01:24:09,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:24:09,075 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:24:09,076 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:24:09,078 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:24:09,079 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:24:09,079 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:24:08" (1/3) ... [2022-07-22 01:24:09,080 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25d2f46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:24:09, skipping insertion in model container [2022-07-22 01:24:09,081 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:24:09,081 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (2/3) ... [2022-07-22 01:24:09,081 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25d2f46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:24:09, skipping insertion in model container [2022-07-22 01:24:09,081 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:24:09,081 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:24:09" (3/3) ... [2022-07-22 01:24:09,083 INFO L354 chiAutomizerObserver]: Analyzing ICFG 4NestedWith3Variables-1.c [2022-07-22 01:24:09,131 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:24:09,132 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:24:09,132 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:24:09,132 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:24:09,132 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:24:09,132 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:24:09,132 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:24:09,133 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:24:09,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:24:09,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-22 01:24:09,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:24:09,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:24:09,171 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 01:24:09,172 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-22 01:24:09,172 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:24:09,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:24:09,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-22 01:24:09,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:24:09,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:24:09,174 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 01:24:09,174 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-22 01:24:09,180 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~q~0#1, main_~olda~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~q~0#1;havoc main_~olda~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 6#L23true assume !!(-524287 <= main_~q~0#1 && main_~q~0#1 <= 524287); 9#L24true assume !!(-524287 <= main_~a~0#1 && main_~a~0#1 <= 524287); 5#L25true assume !!(-524287 <= main_~b~0#1 && main_~b~0#1 <= 524287); 4#L26-2true [2022-07-22 01:24:09,181 INFO L754 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!(main_~q~0#1 > 0);main_~q~0#1 := main_~q~0#1 + main_~a~0#1 - 1;main_~olda~0#1 := main_~a~0#1;main_~a~0#1 := 3 * main_~olda~0#1 - 4 * main_~b~0#1;main_~b~0#1 := 4 * main_~olda~0#1 + 3 * main_~b~0#1; 4#L26-2true [2022-07-22 01:24:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:24:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2022-07-22 01:24:09,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:24:09,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920678392] [2022-07-22 01:24:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:24:09,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:24:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:09,289 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:24:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:09,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:24:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:24:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2022-07-22 01:24:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:24:09,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602504821] [2022-07-22 01:24:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:24:09,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:24:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:09,351 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:24:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:09,363 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:24:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:24:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash 889571345, now seen corresponding path program 1 times [2022-07-22 01:24:09,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:24:09,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483618857] [2022-07-22 01:24:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:24:09,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:24:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:09,392 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:24:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:09,409 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:24:09,541 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:24:09,542 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:24:09,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:24:09,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:24:09,545 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:24:09,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:24:09,546 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:24:09,546 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:24:09,546 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4NestedWith3Variables-1.c_Iteration1_Loop [2022-07-22 01:24:09,546 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:24:09,546 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:24:09,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:24:09,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:24:09,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:24:09,690 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:24:09,691 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:24:09,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:24:09,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:24:09,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:24:09,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-22 01:24:09,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:24:09,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:24:09,741 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:24:09,742 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:24:09,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-22 01:24:09,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:24:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:24:09,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:24:09,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-22 01:24:09,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:24:09,783 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:24:09,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:24:09,808 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:24:09,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-22 01:24:09,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:24:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:24:09,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:24:09,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:24:09,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:24:09,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-22 01:24:09,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-22 01:24:09,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:24:09,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:24:09,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:24:09,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-22 01:24:09,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:24:09,953 INFO L160 nArgumentSynthesizer]: Using integer mode.