./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.14.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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-restricted-15/b.14.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 e0029e4ef6d93314dd28a1b067e9a0f7a5ca34b8281e95ccf7b3ad64c7537db6 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:22:52,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:22:52,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:22:52,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:22:52,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:22:52,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:22:52,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:22:52,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:22:52,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:22:52,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:22:52,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:22:52,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:22:52,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:22:52,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:22:52,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:22:52,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:22:52,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:22:52,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:22:52,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:22:52,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:22:52,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:22:52,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:22:52,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:22:52,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:22:52,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:22:52,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:22:52,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:22:52,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:22:52,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:22:52,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:22:52,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:22:52,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:22:53,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:22:53,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:22:53,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:22:53,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:22:53,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:22:53,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:22:53,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:22:53,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:22:53,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:22:53,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-16 09:22:53,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:22:53,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:22:53,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:22:53,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:22:53,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:22:53,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:22:53,020 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:22:53,020 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-16 09:22:53,020 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-16 09:22:53,020 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-16 09:22:53,021 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-16 09:22:53,021 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-16 09:22:53,021 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-16 09:22:53,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:22:53,021 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:22:53,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:22:53,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:22:53,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-16 09:22:53,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-16 09:22:53,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-16 09:22:53,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:22:53,023 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-16 09:22:53,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:22:53,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-16 09:22:53,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:22:53,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:22:53,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:22:53,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:22:53,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:22:53,025 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-16 09:22:53,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0029e4ef6d93314dd28a1b067e9a0f7a5ca34b8281e95ccf7b3ad64c7537db6 [2021-12-16 09:22:53,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:22:53,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:22:53,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:22:53,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:22:53,205 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:22:53,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.14.c [2021-12-16 09:22:53,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a5f6c5b/68109b22a2184bdf8558a3323c3c1095/FLAGc58977c56 [2021-12-16 09:22:53,594 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:22:53,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.14.c [2021-12-16 09:22:53,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a5f6c5b/68109b22a2184bdf8558a3323c3c1095/FLAGc58977c56 [2021-12-16 09:22:53,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a5f6c5b/68109b22a2184bdf8558a3323c3c1095 [2021-12-16 09:22:53,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:22:53,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:22:53,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:22:53,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:22:53,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:22:53,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6819cabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53, skipping insertion in model container [2021-12-16 09:22:53,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:22:53,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:22:53,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:22:53,793 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:22:53,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:22:53,808 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:22:53,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53 WrapperNode [2021-12-16 09:22:53,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:22:53,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:22:53,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:22:53,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:22:53,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,826 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-16 09:22:53,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:22:53,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:22:53,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:22:53,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:22:53,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:22:53,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:22:53,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:22:53,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:22:53,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (1/1) ... [2021-12-16 09:22:53,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:53,866 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) [2021-12-16 09:22:53,883 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 [2021-12-16 09:22:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:22:53,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:22:53,929 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:22:53,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:22:53,991 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:22:53,995 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:22:53,996 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 09:22:53,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:22:53 BoogieIcfgContainer [2021-12-16 09:22:53,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:22:53,998 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-16 09:22:53,999 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-16 09:22:54,000 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-16 09:22:54,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:22:54,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.12 09:22:53" (1/3) ... [2021-12-16 09:22:54,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34e9f22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:22:54, skipping insertion in model container [2021-12-16 09:22:54,002 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:22:54,002 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:22:53" (2/3) ... [2021-12-16 09:22:54,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34e9f22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:22:54, skipping insertion in model container [2021-12-16 09:22:54,002 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:22:54,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:22:53" (3/3) ... [2021-12-16 09:22:54,004 INFO L388 chiAutomizerObserver]: Analyzing ICFG b.14.c [2021-12-16 09:22:54,036 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-16 09:22:54,036 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-16 09:22:54,036 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-16 09:22:54,036 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-16 09:22:54,037 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-16 09:22:54,037 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-16 09:22:54,037 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-16 09:22:54,037 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-16 09:22:54,045 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) 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) [2021-12-16 09:22:54,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-16 09:22:54,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:22:54,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:22:54,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:22:54,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-16 09:22:54,060 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-16 09:22:54,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) 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) [2021-12-16 09:22:54,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-16 09:22:54,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:22:54,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:22:54,062 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:22:54,062 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-16 09:22:54,066 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue 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_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 7#L12-3true [2021-12-16 09:22:54,066 INFO L793 eck$LassoCheckResult]: Loop: 7#L12-3true assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > 0); 3#L12-2true assume !(main_~y~0#1 > 0); 7#L12-3true [2021-12-16 09:22:54,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-16 09:22:54,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:54,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636673891] [2021-12-16 09:22:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:54,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,120 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,135 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1320, now seen corresponding path program 1 times [2021-12-16 09:22:54,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:54,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729811930] [2021-12-16 09:22:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:54,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:22:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:22:54,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:22:54,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729811930] [2021-12-16 09:22:54,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729811930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:22:54,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:22:54,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-16 09:22:54,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443427296] [2021-12-16 09:22:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:22:54,200 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-16 09:22:54,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:22:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:22:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:22:54,222 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-12-16 09:22:54,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:22:54,273 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-12-16 09:22:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:22:54,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-12-16 09:22:54,277 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-16 09:22:54,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-12-16 09:22:54,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-16 09:22:54,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-16 09:22:54,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-12-16 09:22:54,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 09:22:54,280 INFO L681 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-16 09:22:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-12-16 09:22:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-12-16 09:22:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) 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) [2021-12-16 09:22:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-12-16 09:22:54,314 INFO L704 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-16 09:22:54,314 INFO L587 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-16 09:22:54,314 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-16 09:22:54,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-12-16 09:22:54,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-16 09:22:54,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:22:54,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:22:54,315 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-16 09:22:54,315 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:22:54,315 INFO L791 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 29#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 30#L12-3 [2021-12-16 09:22:54,315 INFO L793 eck$LassoCheckResult]: Loop: 30#L12-3 assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > 0); 26#L12-2 assume !!(main_~y~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1; 27#L12-2 assume !(main_~y~0#1 > 0); 30#L12-3 [2021-12-16 09:22:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-16 09:22:54,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:54,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131077379] [2021-12-16 09:22:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:54,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,319 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash 41000, now seen corresponding path program 1 times [2021-12-16 09:22:54,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:54,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21249884] [2021-12-16 09:22:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:54,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,333 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,339 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 1 times [2021-12-16 09:22:54,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:54,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373112066] [2021-12-16 09:22:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:54,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:54,356 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:54,440 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:22:54,444 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:22:54,444 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:22:54,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:22:54,445 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:22:54,445 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,445 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:22:54,445 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:22:54,445 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration2_Loop [2021-12-16 09:22:54,445 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:22:54,446 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:22:54,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:22:54,567 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:22:54,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,583 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) [2021-12-16 09:22:54,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:54,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:54,625 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 [2021-12-16 09:22:54,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:22:54,634 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: [] [2021-12-16 09:22:54,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-16 09:22:54,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,666 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) [2021-12-16 09:22:54,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-16 09:22:54,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:54,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:54,683 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:22:54,684 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: [] [2021-12-16 09:22:54,712 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 [2021-12-16 09:22:54,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,714 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) [2021-12-16 09:22:54,715 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 [2021-12-16 09:22:54,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:54,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:54,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:22:54,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,812 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) [2021-12-16 09:22:54,813 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 [2021-12-16 09:22:54,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:22:54,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:54,861 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:22:54,864 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 [2021-12-16 09:22:54,865 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:22:54,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:22:54,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:22:54,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:22:54,865 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:22:54,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:22:54,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:22:54,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration2_Loop [2021-12-16 09:22:54,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:22:54,865 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:22:54,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:54,953 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:22:54,956 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:22:54,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:54,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:54,958 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) [2021-12-16 09:22:54,974 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 [2021-12-16 09:22:54,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:54,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:54,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:54,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:54,984 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:22:54,984 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:22:54,988 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 [2021-12-16 09:22:54,997 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:22:55,014 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 [2021-12-16 09:22:55,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,016 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) [2021-12-16 09:22:55,017 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 [2021-12-16 09:22:55,018 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 [2021-12-16 09:22:55,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:55,024 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:55,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:55,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:55,027 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:22:55,027 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:22:55,043 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:22:55,073 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 [2021-12-16 09:22:55,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,075 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) [2021-12-16 09:22:55,097 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 [2021-12-16 09:22:55,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:55,104 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:22:55,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:55,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:55,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:55,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:22:55,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:22:55,109 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 [2021-12-16 09:22:55,118 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:22:55,121 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-16 09:22:55,121 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:22:55,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,123 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) [2021-12-16 09:22:55,124 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 [2021-12-16 09:22:55,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:22:55,125 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:22:55,125 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:22:55,125 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 [] [2021-12-16 09:22:55,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-16 09:22:55,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:22:55,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:22:55,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:22:55,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:22:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:22:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:22:55,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:22:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:22:55,217 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-16 09:22:55,218 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-12-16 09:22:55,235 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 13 states and 18 transitions. Complement of second has 6 states. [2021-12-16 09:22:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-16 09:22:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-12-16 09:22:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-16 09:22:55,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-16 09:22:55,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:55,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-16 09:22:55,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:55,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-16 09:22:55,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:55,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-12-16 09:22:55,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:22:55,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 12 transitions. [2021-12-16 09:22:55,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-16 09:22:55,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-16 09:22:55,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-12-16 09:22:55,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-16 09:22:55,240 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-16 09:22:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-12-16 09:22:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-12-16 09:22:55,241 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) [2021-12-16 09:22:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-12-16 09:22:55,241 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-16 09:22:55,241 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-16 09:22:55,241 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-16 09:22:55,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-12-16 09:22:55,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-16 09:22:55,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:22:55,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:22:55,242 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-12-16 09:22:55,242 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-16 09:22:55,242 INFO L791 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 87#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 88#L12-3 assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > 0); 84#L12-2 assume !!(main_~y~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1; 85#L12-2 assume !!(main_~y~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1; 83#L12-2 [2021-12-16 09:22:55,242 INFO L793 eck$LassoCheckResult]: Loop: 83#L12-2 assume !!(main_~y~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1; 83#L12-2 [2021-12-16 09:22:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 1 times [2021-12-16 09:22:55,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:55,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588692265] [2021-12-16 09:22:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:55,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:55,249 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:55,253 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-16 09:22:55,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:55,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074220824] [2021-12-16 09:22:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:55,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:55,256 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:55,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:55,259 INFO L85 PathProgramCache]: Analyzing trace with hash 889698284, now seen corresponding path program 2 times [2021-12-16 09:22:55,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:22:55,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534566824] [2021-12-16 09:22:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:22:55,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:22:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:55,264 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:22:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:22:55,269 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:22:55,287 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:22:55,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:22:55,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:22:55,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:22:55,287 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:22:55,287 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,288 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:22:55,288 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:22:55,288 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration3_Loop [2021-12-16 09:22:55,288 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:22:55,288 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:22:55,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,333 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:22:55,333 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:22:55,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,334 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) [2021-12-16 09:22:55,413 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 [2021-12-16 09:22:55,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:55,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:55,431 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 [2021-12-16 09:22:55,438 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:22:55,438 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: [] [2021-12-16 09:22:55,456 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 [2021-12-16 09:22:55,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,467 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) [2021-12-16 09:22:55,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:55,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:55,487 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 [2021-12-16 09:22:55,490 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:22:55,490 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: [] [2021-12-16 09:22:55,508 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 [2021-12-16 09:22:55,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,524 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) [2021-12-16 09:22:55,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:55,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:55,559 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 [2021-12-16 09:22:55,594 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 [2021-12-16 09:22:55,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,596 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) [2021-12-16 09:22:55,623 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 [2021-12-16 09:22:55,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:22:55,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:55,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:22:55,647 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=0} Honda state: {ULTIMATE.start_main_~c~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=6}, {ULTIMATE.start_main_~c~0#1=-5}, {ULTIMATE.start_main_~c~0#1=0}] Lambdas: [1, 1, 1] Nus: [0, 1] [2021-12-16 09:22:55,664 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 [2021-12-16 09:22:55,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,666 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) [2021-12-16 09:22:55,667 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 [2021-12-16 09:22:55,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:22:55,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:55,708 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 [2021-12-16 09:22:55,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,724 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) [2021-12-16 09:22:55,725 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 [2021-12-16 09:22:55,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:22:55,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:22:55,759 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:22:55,765 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 [2021-12-16 09:22:55,765 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:22:55,765 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:22:55,765 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:22:55,765 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:22:55,765 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:22:55,765 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:22:55,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:22:55,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration3_Loop [2021-12-16 09:22:55,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:22:55,765 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:22:55,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:22:55,827 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:22:55,828 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:22:55,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,829 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) [2021-12-16 09:22:55,830 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 [2021-12-16 09:22:55,831 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 [2021-12-16 09:22:55,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:55,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:55,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:55,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:55,841 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:22:55,841 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:22:55,859 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:22:55,875 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 [2021-12-16 09:22:55,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,876 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) [2021-12-16 09:22:55,877 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 [2021-12-16 09:22:55,878 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 [2021-12-16 09:22:55,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:55,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:22:55,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:55,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:55,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:55,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:22:55,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:22:55,900 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:22:55,918 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 [2021-12-16 09:22:55,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,920 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) [2021-12-16 09:22:55,921 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 [2021-12-16 09:22:55,922 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 [2021-12-16 09:22:55,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:55,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:55,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:55,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:55,930 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-16 09:22:55,930 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-16 09:22:55,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:22:55,976 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 [2021-12-16 09:22:55,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:55,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:55,978 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) [2021-12-16 09:22:55,991 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 [2021-12-16 09:22:55,992 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 [2021-12-16 09:22:55,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:22:55,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:22:55,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:22:55,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:22:55,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:22:55,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:22:55,999 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:22:56,008 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:22:56,012 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:22:56,012 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-16 09:22:56,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:22:56,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:22:56,013 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) [2021-12-16 09:22:56,019 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:22:56,019 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:22:56,019 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:22:56,019 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-16 09:22:56,034 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 [2021-12-16 09:22:56,037 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 [2021-12-16 09:22:56,037 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:22:56,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:22:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:22:56,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:22:56,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:22:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:22:56,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:22:56,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:22:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:22:56,065 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-16 09:22:56,065 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-12-16 09:22:56,071 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 16 transitions. Complement of second has 4 states. [2021-12-16 09:22:56,071 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 [2021-12-16 09:22:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-12-16 09:22:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-16 09:22:56,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-16 09:22:56,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:56,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-16 09:22:56,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:56,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-16 09:22:56,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:22:56,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 16 transitions. [2021-12-16 09:22:56,074 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:22:56,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2021-12-16 09:22:56,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-16 09:22:56,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-16 09:22:56,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-16 09:22:56,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 09:22:56,074 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:22:56,075 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:22:56,075 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:22:56,075 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-16 09:22:56,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-16 09:22:56,075 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:22:56,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-16 09:22:56,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.12 09:22:56 BoogieIcfgContainer [2021-12-16 09:22:56,080 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-16 09:22:56,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 09:22:56,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 09:22:56,081 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 09:22:56,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:22:53" (3/4) ... [2021-12-16 09:22:56,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 09:22:56,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 09:22:56,083 INFO L158 Benchmark]: Toolchain (without parser) took 2467.65ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 54.5MB in the beginning and 65.8MB in the end (delta: -11.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-12-16 09:22:56,084 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:22:56,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.35ms. Allocated memory is still 86.0MB. Free memory was 54.2MB in the beginning and 64.6MB in the end (delta: -10.4MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-12-16 09:22:56,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.32ms. Allocated memory is still 86.0MB. Free memory was 64.6MB in the beginning and 63.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:22:56,085 INFO L158 Benchmark]: Boogie Preprocessor took 12.44ms. Allocated memory is still 86.0MB. Free memory was 63.4MB in the beginning and 62.5MB in the end (delta: 909.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:22:56,085 INFO L158 Benchmark]: RCFGBuilder took 156.63ms. Allocated memory is still 86.0MB. Free memory was 62.5MB in the beginning and 54.5MB in the end (delta: 8.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 09:22:56,085 INFO L158 Benchmark]: BuchiAutomizer took 2081.49ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 54.5MB in the beginning and 65.8MB in the end (delta: -11.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-16 09:22:56,085 INFO L158 Benchmark]: Witness Printer took 2.43ms. Allocated memory is still 109.1MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:22:56,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.35ms. Allocated memory is still 86.0MB. Free memory was 54.2MB in the beginning and 64.6MB in the end (delta: -10.4MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.32ms. Allocated memory is still 86.0MB. Free memory was 64.6MB in the beginning and 63.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.44ms. Allocated memory is still 86.0MB. Free memory was 63.4MB in the beginning and 62.5MB in the end (delta: 909.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 156.63ms. Allocated memory is still 86.0MB. Free memory was 62.5MB in the beginning and 54.5MB in the end (delta: 8.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 2081.49ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 54.5MB in the beginning and 65.8MB in the end (delta: -11.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Witness Printer took 2.43ms. Allocated memory is still 109.1MB. Free memory is still 65.8MB. There was no memory consumed. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 15 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax153 hnf100 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf92 smp92 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-16 09:22:56,131 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 [2021-12-16 09:22:56,322 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