./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 791161d1 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-?-791161d [2022-07-23 14:11:56,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:11:56,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:11:56,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:11:56,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:11:56,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:11:56,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:11:56,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:11:56,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:11:56,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:11:56,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:11:56,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:11:56,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:11:56,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:11:56,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:11:56,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:11:56,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:11:56,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:11:56,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:11:56,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:11:56,215 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:11:56,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:11:56,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:11:56,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:11:56,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:11:56,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:11:56,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:11:56,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:11:56,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:11:56,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:11:56,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:11:56,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:11:56,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:11:56,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:11:56,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:11:56,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:11:56,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:11:56,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:11:56,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:11:56,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:11:56,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:11:56,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:11:56,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:11:56,276 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:11:56,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:11:56,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:11:56,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:11:56,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:11:56,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:11:56,279 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:11:56,280 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:11:56,280 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:11:56,281 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:11:56,281 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:11:56,281 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:11:56,281 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:11:56,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:11:56,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:11:56,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:11:56,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:11:56,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:11:56,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:11:56,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:11:56,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:11:56,290 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:11:56,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:11:56,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:11:56,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:11:56,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:11:56,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:11:56,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:11:56,293 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:11:56,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39ec4b52f8da315ff57d8e97152c727a55203720ed4bc216d0daa6b94e35d48 [2022-07-23 14:11:56,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:11:56,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:11:56,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:11:56,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:11:56,571 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:11:56,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2022-07-23 14:11:56,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d153ed416/951e33eaae7e4059bc73d23c65324931/FLAGd4f2f7a5b [2022-07-23 14:11:57,068 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:11:57,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/4NestedWith3Variables-1.c [2022-07-23 14:11:57,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d153ed416/951e33eaae7e4059bc73d23c65324931/FLAGd4f2f7a5b [2022-07-23 14:11:57,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d153ed416/951e33eaae7e4059bc73d23c65324931 [2022-07-23 14:11:57,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:11:57,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:11:57,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:11:57,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:11:57,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:11:57,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea7d014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57, skipping insertion in model container [2022-07-23 14:11:57,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:11:57,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:11:57,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:11:57,708 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:11:57,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:11:57,734 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:11:57,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57 WrapperNode [2022-07-23 14:11:57,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:11:57,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:11:57,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:11:57,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:11:57,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,762 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-07-23 14:11:57,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:11:57,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:11:57,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:11:57,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:11:57,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:11:57,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:11:57,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:11:57,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:11:57,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (1/1) ... [2022-07-23 14:11:57,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:11:57,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:11:57,817 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) [2022-07-23 14:11:57,845 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 [2022-07-23 14:11:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:11:57,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:11:57,911 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:11:57,913 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:11:58,019 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:11:58,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:11:58,026 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 14:11:58,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:11:58 BoogieIcfgContainer [2022-07-23 14:11:58,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:11:58,030 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:11:58,030 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:11:58,033 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:11:58,034 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:11:58,034 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:11:57" (1/3) ... [2022-07-23 14:11:58,035 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5476ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:11:58, skipping insertion in model container [2022-07-23 14:11:58,035 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:11:58,036 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:11:57" (2/3) ... [2022-07-23 14:11:58,036 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5476ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:11:58, skipping insertion in model container [2022-07-23 14:11:58,036 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:11:58,036 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:11:58" (3/3) ... [2022-07-23 14:11:58,039 INFO L354 chiAutomizerObserver]: Analyzing ICFG 4NestedWith3Variables-1.c [2022-07-23 14:11:58,105 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:11:58,105 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:11:58,105 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:11:58,105 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:11:58,105 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:11:58,106 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:11:58,106 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:11:58,106 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:11:58,109 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) [2022-07-23 14:11:58,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:11:58,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:11:58,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:11:58,132 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:11:58,132 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:11:58,133 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:11:58,133 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) [2022-07-23 14:11:58,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:11:58,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:11:58,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:11:58,135 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:11:58,135 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:11:58,142 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 [2022-07-23 14:11:58,142 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 [2022-07-23 14:11:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:11:58,152 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2022-07-23 14:11:58,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:11:58,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831735818] [2022-07-23 14:11:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:11:58,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:11:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:11:58,237 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:11:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:11:58,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:11:58,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:11:58,273 INFO L85 PathProgramCache]: Analyzing trace with hash 57, now seen corresponding path program 1 times [2022-07-23 14:11:58,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:11:58,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163183516] [2022-07-23 14:11:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:11:58,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:11:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:11:58,289 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:11:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:11:58,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:11:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:11:58,309 INFO L85 PathProgramCache]: Analyzing trace with hash 889571345, now seen corresponding path program 1 times [2022-07-23 14:11:58,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:11:58,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365625238] [2022-07-23 14:11:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:11:58,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:11:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:11:58,328 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:11:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:11:58,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:11:58,460 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:11:58,460 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:11:58,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:11:58,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:11:58,461 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:11:58,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:11:58,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:11:58,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:11:58,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: 4NestedWith3Variables-1.c_Iteration1_Loop [2022-07-23 14:11:58,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:11:58,469 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:11:58,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:11:58,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:11:58,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:11:58,593 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:11:58,594 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:11:58,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:11:58,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:11:58,603 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) [2022-07-23 14:11:58,604 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 [2022-07-23 14:11:58,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:11:58,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:11:58,636 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:11:58,636 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: [] [2022-07-23 14:11:58,661 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 [2022-07-23 14:11:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:11:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:11:58,667 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) [2022-07-23 14:11:58,667 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 [2022-07-23 14:11:58,669 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:11:58,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:11:58,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:11:58,684 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: [] [2022-07-23 14:11:58,700 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 [2022-07-23 14:11:58,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:11:58,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:11:58,707 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) [2022-07-23 14:11:58,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:11:58,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:11:58,743 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 [2022-07-23 14:11:58,769 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 [2022-07-23 14:11:58,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:11:58,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:11:58,771 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) [2022-07-23 14:11:58,773 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 [2022-07-23 14:11:58,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:11:58,774 INFO L160 nArgumentSynthesizer]: Using integer mode.