./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a31fd051 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-lit/CookSeeZuleger-TACAS2013-Fig8a.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 bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 14:13:39,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 14:13:39,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 14:13:39,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 14:13:39,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 14:13:39,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 14:13:39,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 14:13:39,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 14:13:39,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 14:13:39,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 14:13:39,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 14:13:39,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 14:13:39,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 14:13:39,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 14:13:39,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 14:13:39,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 14:13:39,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 14:13:39,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 14:13:39,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 14:13:39,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 14:13:39,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 14:13:39,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 14:13:39,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 14:13:39,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 14:13:39,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 14:13:39,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 14:13:39,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 14:13:39,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 14:13:39,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 14:13:39,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 14:13:39,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 14:13:39,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 14:13:39,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 14:13:39,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 14:13:39,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 14:13:39,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 14:13:39,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 14:13:39,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 14:13:39,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 14:13:39,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 14:13:39,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 14:13:39,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 14:13:39,983 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 14:13:39,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 14:13:39,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 14:13:39,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 14:13:39,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 14:13:39,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 14:13:39,985 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 14:13:39,985 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 14:13:39,985 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 14:13:39,985 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 14:13:39,986 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 14:13:39,986 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 14:13:39,986 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 14:13:39,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 14:13:39,987 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 14:13:39,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 14:13:39,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 14:13:39,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 14:13:39,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 14:13:39,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 14:13:39,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 14:13:39,988 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 14:13:39,988 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 14:13:39,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 14:13:39,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 14:13:39,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 14:13:39,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 14:13:39,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 14:13:39,990 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 14:13:39,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba [2023-02-15 14:13:40,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 14:13:40,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 14:13:40,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 14:13:40,184 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 14:13:40,184 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 14:13:40,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2023-02-15 14:13:41,250 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 14:13:41,381 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 14:13:41,382 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2023-02-15 14:13:41,386 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/139703f13/f5971c63b0644862a125fdadb5eed494/FLAG0f69a9ddf [2023-02-15 14:13:41,400 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/139703f13/f5971c63b0644862a125fdadb5eed494 [2023-02-15 14:13:41,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 14:13:41,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 14:13:41,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 14:13:41,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 14:13:41,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 14:13:41,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e68bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41, skipping insertion in model container [2023-02-15 14:13:41,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 14:13:41,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 14:13:41,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:13:41,511 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 14:13:41,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:13:41,527 INFO L208 MainTranslator]: Completed translation [2023-02-15 14:13:41,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41 WrapperNode [2023-02-15 14:13:41,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 14:13:41,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 14:13:41,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 14:13:41,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 14:13:41,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,546 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-02-15 14:13:41,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 14:13:41,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 14:13:41,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 14:13:41,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 14:13:41,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 14:13:41,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 14:13:41,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 14:13:41,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 14:13:41,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (1/1) ... [2023-02-15 14:13:41,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:41,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:41,623 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) [2023-02-15 14:13:41,640 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 [2023-02-15 14:13:41,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 14:13:41,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 14:13:41,700 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 14:13:41,702 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 14:13:41,768 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 14:13:41,774 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 14:13:41,774 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 14:13:41,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:13:41 BoogieIcfgContainer [2023-02-15 14:13:41,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 14:13:41,777 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 14:13:41,777 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 14:13:41,779 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 14:13:41,780 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:13:41,780 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 02:13:41" (1/3) ... [2023-02-15 14:13:41,781 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2287f0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:13:41, skipping insertion in model container [2023-02-15 14:13:41,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:13:41,781 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:41" (2/3) ... [2023-02-15 14:13:41,781 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2287f0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:13:41, skipping insertion in model container [2023-02-15 14:13:41,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:13:41,782 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:13:41" (3/3) ... [2023-02-15 14:13:41,783 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2023-02-15 14:13:41,835 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 14:13:41,836 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 14:13:41,836 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 14:13:41,836 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 14:13:41,836 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 14:13:41,836 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 14:13:41,836 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 14:13:41,837 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 14:13:41,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-02-15 14:13:41,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:41,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:41,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:41,864 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 14:13:41,864 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:13:41,865 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 14:13:41,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-02-15 14:13:41,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:41,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:41,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:41,867 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 14:13:41,867 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:13:41,872 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L17-2true [2023-02-15 14:13:41,873 INFO L750 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0#1); 4#L17true assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 3#L17-2true [2023-02-15 14:13:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 14:13:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:41,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054121134] [2023-02-15 14:13:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:41,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:41,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:41,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-02-15 14:13:41,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:41,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899870296] [2023-02-15 14:13:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:41,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:41,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:41,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-02-15 14:13:41,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:41,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867630412] [2023-02-15 14:13:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:42,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:42,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:42,060 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:42,061 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:42,061 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:42,061 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:42,061 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:42,061 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,061 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:42,061 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:42,062 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2023-02-15 14:13:42,062 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:42,062 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:42,096 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,105 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,108 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:42,165 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:42,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,169 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) [2023-02-15 14:13:42,170 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 [2023-02-15 14:13:42,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:42,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:42,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:42,200 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: [] [2023-02-15 14:13:42,206 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 [2023-02-15 14:13:42,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,221 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) [2023-02-15 14:13:42,224 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 [2023-02-15 14:13:42,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:42,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:42,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:42,241 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: [] [2023-02-15 14:13:42,247 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 [2023-02-15 14:13:42,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,249 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) [2023-02-15 14:13:42,277 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 [2023-02-15 14:13:42,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:42,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:42,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-02-15 14:13:42,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,292 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) [2023-02-15 14:13:42,294 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 [2023-02-15 14:13:42,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:42,296 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:42,328 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:42,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:42,333 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:42,333 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:42,334 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:42,334 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:42,334 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:42,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:42,334 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:42,334 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2023-02-15 14:13:42,334 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:42,334 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:42,336 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,341 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,345 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,405 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:42,409 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:42,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,427 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2023-02-15 14:13:42,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-15 14:13:42,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:42,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:42,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:42,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:42,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:42,451 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:42,451 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:42,471 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:42,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:42,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,494 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-02-15 14:13:42,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-15 14:13:42,497 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:42,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:42,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:42,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:42,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:42,508 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:42,508 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:42,518 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:42,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:42,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,526 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2023-02-15 14:13:42,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-15 14:13:42,529 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:42,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:42,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:42,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:42,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:42,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:42,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:42,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:42,553 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:42,556 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 14:13:42,556 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 14:13:42,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,615 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-02-15 14:13:42,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-15 14:13:42,617 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:42,618 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:42,618 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:42,618 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-15 14:13:42,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-02-15 14:13:42,624 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:42,647 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:42,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:42,656 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:42,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:42,678 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 14:13:42,680 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-15 14:13:42,723 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) Result 24 states and 31 transitions. Complement of second has 6 states. [2023-02-15 14:13:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 14:13:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-15 14:13:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2023-02-15 14:13:42,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-15 14:13:42,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:42,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-15 14:13:42,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:42,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-15 14:13:42,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:42,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2023-02-15 14:13:42,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:42,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2023-02-15 14:13:42,735 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 14:13:42,735 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-02-15 14:13:42,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-02-15 14:13:42,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:42,735 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-15 14:13:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-02-15 14:13:42,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-15 14:13:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-02-15 14:13:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-02-15 14:13:42,751 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-15 14:13:42,752 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-15 14:13:42,752 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 14:13:42,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-02-15 14:13:42,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:42,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:42,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:42,753 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-15 14:13:42,753 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:13:42,753 INFO L748 eck$LassoCheckResult]: Stem: 72#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 73#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 74#L17-2 assume !!(0 != main_~x~0#1); 67#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 68#L17-2 [2023-02-15 14:13:42,753 INFO L750 eck$LassoCheckResult]: Loop: 68#L17-2 assume !!(0 != main_~x~0#1); 71#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 68#L17-2 [2023-02-15 14:13:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-02-15 14:13:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:42,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502907099] [2023-02-15 14:13:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:42,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:42,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2023-02-15 14:13:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:42,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174529779] [2023-02-15 14:13:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:42,764 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:42,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2023-02-15 14:13:42,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:42,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497717704] [2023-02-15 14:13:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:42,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:42,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:13:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497717704] [2023-02-15 14:13:42,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497717704] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 14:13:42,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 14:13:42,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 14:13:42,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732909730] [2023-02-15 14:13:42,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 14:13:42,835 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:42,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:42,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:42,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:42,836 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:42,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:42,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:42,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2023-02-15 14:13:42,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:42,837 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:42,838 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,840 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,842 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:42,877 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:42,877 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:42,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,893 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-02-15 14:13:42,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-15 14:13:42,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:42,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:42,918 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:42,918 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 14:13:42,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:42,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,929 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-02-15 14:13:42,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-15 14:13:42,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:42,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:42,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:42,944 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 14:13:42,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:42,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,950 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-02-15 14:13:42,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-15 14:13:42,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:42,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:42,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:42,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:42,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:42,995 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-02-15 14:13:42,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-15 14:13:42,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:42,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:43,021 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:43,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,026 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:43,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:43,027 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:43,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:43,027 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:43,027 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,027 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:43,027 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:43,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2023-02-15 14:13:43,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:43,027 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:43,028 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,032 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,037 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,086 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:43,087 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:43,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,102 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-02-15 14:13:43,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-15 14:13:43,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:43,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:43,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:43,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:43,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:43,114 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:43,114 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:43,129 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:43,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,138 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-02-15 14:13:43,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-15 14:13:43,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:43,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:43,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:43,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:43,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:43,150 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:43,150 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:43,160 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:43,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,168 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-02-15 14:13:43,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-15 14:13:43,172 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:43,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:43,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:43,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:43,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:43,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:43,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:43,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:43,205 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:43,208 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 14:13:43,208 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 14:13:43,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,220 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-02-15 14:13:43,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-15 14:13:43,273 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:43,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:43,274 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:43,274 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-15 14:13:43,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,280 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:43,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:43,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:43,319 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:43,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:43,327 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 14:13:43,329 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-15 14:13:43,350 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Result 12 states and 17 transitions. Complement of second has 5 states. [2023-02-15 14:13:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 14:13:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-15 14:13:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2023-02-15 14:13:43,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2023-02-15 14:13:43,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:43,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2023-02-15 14:13:43,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:43,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2023-02-15 14:13:43,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:43,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2023-02-15 14:13:43,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:43,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2023-02-15 14:13:43,356 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-15 14:13:43,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-15 14:13:43,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2023-02-15 14:13:43,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:43,357 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-15 14:13:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2023-02-15 14:13:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-02-15 14:13:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-02-15 14:13:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2023-02-15 14:13:43,359 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-15 14:13:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:13:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 14:13:43,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 14:13:43,369 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-02-15 14:13:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:13:43,389 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2023-02-15 14:13:43,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2023-02-15 14:13:43,391 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:43,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2023-02-15 14:13:43,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-15 14:13:43,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-15 14:13:43,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2023-02-15 14:13:43,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:43,392 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-02-15 14:13:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2023-02-15 14:13:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2023-02-15 14:13:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-02-15 14:13:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2023-02-15 14:13:43,394 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-15 14:13:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 14:13:43,395 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-15 14:13:43,395 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-15 14:13:43,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2023-02-15 14:13:43,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:43,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:43,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:43,397 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 14:13:43,397 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:13:43,398 INFO L748 eck$LassoCheckResult]: Stem: 153#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 154#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 155#L17-2 assume !!(0 != main_~x~0#1); 150#L17 [2023-02-15 14:13:43,399 INFO L750 eck$LassoCheckResult]: Loop: 150#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 149#L17-2 assume !!(0 != main_~x~0#1); 150#L17 [2023-02-15 14:13:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,399 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-15 14:13:43,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:43,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058518154] [2023-02-15 14:13:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:43,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2023-02-15 14:13:43,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:43,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037480575] [2023-02-15 14:13:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:43,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:43,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2023-02-15 14:13:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:43,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463595291] [2023-02-15 14:13:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:43,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:43,460 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:43,460 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:43,460 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:43,460 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:43,460 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:43,460 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:43,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:43,461 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2023-02-15 14:13:43,461 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:43,461 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:43,462 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,468 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,471 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,515 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:43,515 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:43,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,519 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-02-15 14:13:43,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-15 14:13:43,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:43,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:43,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,549 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-02-15 14:13:43,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-15 14:13:43,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:43,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:43,607 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:43,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,612 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:43,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:43,612 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:43,612 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:43,612 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:43,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:43,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:43,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2023-02-15 14:13:43,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:43,612 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:43,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,622 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,625 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,676 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:43,676 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:43,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,687 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-02-15 14:13:43,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-15 14:13:43,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:43,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:43,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:43,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:43,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:43,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:43,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:43,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:43,733 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:43,735 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 14:13:43,735 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 14:13:43,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,737 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-02-15 14:13:43,744 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:43,744 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:43,745 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:43,745 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-15 14:13:43,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-15 14:13:43,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,751 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:43,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:43,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:43,768 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:43,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:43,790 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 14:13:43,790 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-02-15 14:13:43,796 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Result 12 states and 14 transitions. Complement of second has 5 states. [2023-02-15 14:13:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 14:13:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-02-15 14:13:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-15 14:13:43,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2023-02-15 14:13:43,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:43,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-15 14:13:43,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:43,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2023-02-15 14:13:43,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:43,798 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2023-02-15 14:13:43,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:43,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2023-02-15 14:13:43,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-15 14:13:43,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-15 14:13:43,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2023-02-15 14:13:43,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:43,799 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-15 14:13:43,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2023-02-15 14:13:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-15 14:13:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-02-15 14:13:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-02-15 14:13:43,800 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-15 14:13:43,800 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-15 14:13:43,800 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-15 14:13:43,800 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-02-15 14:13:43,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:13:43,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:43,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:43,801 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2023-02-15 14:13:43,801 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:13:43,801 INFO L748 eck$LassoCheckResult]: Stem: 208#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 209#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 203#L17-2 assume !!(0 != main_~x~0#1); 204#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 205#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2023-02-15 14:13:43,801 INFO L750 eck$LassoCheckResult]: Loop: 206#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 207#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2023-02-15 14:13:43,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2023-02-15 14:13:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:43,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006148047] [2023-02-15 14:13:43,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:43,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2023-02-15 14:13:43,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:43,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392262775] [2023-02-15 14:13:43,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:43,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:43,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2023-02-15 14:13:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:43,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384964876] [2023-02-15 14:13:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:13:43,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384964876] [2023-02-15 14:13:43,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384964876] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:13:43,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366799554] [2023-02-15 14:13:43,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 14:13:43,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:13:43,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,854 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:13:43,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 14:13:43,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 14:13:43,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:13:43,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:43,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:43,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:13:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:43,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366799554] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:13:43,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:13:43,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-02-15 14:13:43,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114683102] [2023-02-15 14:13:43,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:13:43,912 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:43,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:43,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:43,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:43,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:43,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:43,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:43,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2023-02-15 14:13:43,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:43,913 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:43,913 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,915 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,919 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:43,945 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:43,945 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:43,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,961 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-02-15 14:13:43,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-15 14:13:43,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:43,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:43,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:43,985 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 14:13:43,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:43,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:43,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:43,996 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-02-15 14:13:43,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-02-15 14:13:43,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:43,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:44,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-02-15 14:13:44,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:44,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:44,013 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-02-15 14:13:44,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-15 14:13:44,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:44,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:44,069 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:44,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:44,073 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:44,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:44,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:44,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:44,073 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:44,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:44,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:44,073 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:44,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2023-02-15 14:13:44,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:44,073 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:44,074 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:44,086 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:44,089 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:44,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:44,144 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:44,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:44,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:44,146 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-02-15 14:13:44,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-02-15 14:13:44,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:13:44,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:44,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:44,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:44,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:44,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:44,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:44,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:44,178 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:44,181 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 14:13:44,181 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 14:13:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:44,182 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-02-15 14:13:44,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-02-15 14:13:44,185 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:44,185 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:44,185 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:44,186 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-15 14:13:44,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:44,189 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:44,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:44,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:44,224 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:44,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:44,235 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 14:13:44,235 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-15 14:13:44,238 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Result 8 states and 9 transitions. Complement of second has 3 states. [2023-02-15 14:13:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-02-15 14:13:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-15 14:13:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2023-02-15 14:13:44,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-15 14:13:44,239 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:44,239 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 14:13:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:44,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:44,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:44,260 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:44,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:44,270 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 14:13:44,270 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-15 14:13:44,274 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Result 8 states and 9 transitions. Complement of second has 3 states. [2023-02-15 14:13:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2023-02-15 14:13:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-15 14:13:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2023-02-15 14:13:44,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-15 14:13:44,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:44,275 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 14:13:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:44,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:44,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:44,300 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:44,316 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 14:13:44,316 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-15 14:13:44,325 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Result 9 states and 10 transitions. Complement of second has 4 states. [2023-02-15 14:13:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 14:13:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-15 14:13:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-15 14:13:44,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-15 14:13:44,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:44,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2023-02-15 14:13:44,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:44,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2023-02-15 14:13:44,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:44,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2023-02-15 14:13:44,333 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 14:13:44,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2023-02-15 14:13:44,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 14:13:44,333 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 14:13:44,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 14:13:44,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 14:13:44,333 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:44,333 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:13:44,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 14:13:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 14:13:44,334 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-15 14:13:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:13:44,334 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-02-15 14:13:44,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-02-15 14:13:44,334 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 14:13:44,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 14:13:44,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 14:13:44,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 14:13:44,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 14:13:44,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 14:13:44,334 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:44,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 14:13:44,336 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:44,336 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-15 14:13:44,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-15 14:13:44,336 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 14:13:44,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-15 14:13:44,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 02:13:44 BoogieIcfgContainer [2023-02-15 14:13:44,349 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 14:13:44,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 14:13:44,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 14:13:44,349 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 14:13:44,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:13:41" (3/4) ... [2023-02-15 14:13:44,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 14:13:44,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 14:13:44,354 INFO L158 Benchmark]: Toolchain (without parser) took 2949.97ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 99.5MB in the beginning and 125.3MB in the end (delta: -25.8MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2023-02-15 14:13:44,354 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:13:44,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 122.47ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 90.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:13:44,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.57ms. Allocated memory is still 138.4MB. Free memory was 90.2MB in the beginning and 89.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:13:44,357 INFO L158 Benchmark]: Boogie Preprocessor took 19.24ms. Allocated memory is still 138.4MB. Free memory was 89.0MB in the beginning and 88.0MB in the end (delta: 985.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:13:44,357 INFO L158 Benchmark]: RCFGBuilder took 208.07ms. Allocated memory is still 138.4MB. Free memory was 88.0MB in the beginning and 80.2MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:13:44,357 INFO L158 Benchmark]: BuchiAutomizer took 2572.02ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 79.7MB in the beginning and 126.3MB in the end (delta: -46.6MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-02-15 14:13:44,357 INFO L158 Benchmark]: Witness Printer took 3.74ms. Allocated memory is still 207.6MB. Free memory was 126.3MB in the beginning and 125.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:13:44,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 122.47ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 90.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.57ms. Allocated memory is still 138.4MB. Free memory was 90.2MB in the beginning and 89.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.24ms. Allocated memory is still 138.4MB. Free memory was 89.0MB in the beginning and 88.0MB in the end (delta: 985.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 208.07ms. Allocated memory is still 138.4MB. Free memory was 88.0MB in the beginning and 80.2MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2572.02ms. Allocated memory was 138.4MB in the beginning and 207.6MB in the end (delta: 69.2MB). Free memory was 79.7MB in the beginning and 126.3MB in the end (delta: -46.6MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 3.74ms. Allocated memory is still 207.6MB. Free memory was 126.3MB in the beginning and 125.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 29 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf100 smp65 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-15 14:13:44,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:44,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-02-15 14:13:44,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:44,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE