./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash df3ddc93bc6339292c9158119f1fdb949bb8842d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 13:56:54,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 13:56:54,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 13:56:54,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 13:56:54,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 13:56:54,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 13:56:54,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 13:56:54,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 13:56:54,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 13:56:54,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 13:56:54,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 13:56:54,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 13:56:54,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 13:56:54,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 13:56:54,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 13:56:55,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 13:56:55,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 13:56:55,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 13:56:55,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 13:56:55,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 13:56:55,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 13:56:55,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 13:56:55,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 13:56:55,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 13:56:55,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 13:56:55,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 13:56:55,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 13:56:55,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 13:56:55,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 13:56:55,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 13:56:55,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 13:56:55,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 13:56:55,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 13:56:55,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 13:56:55,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 13:56:55,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 13:56:55,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 13:56:55,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 13:56:55,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 13:56:55,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 13:56:55,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 13:56:55,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 13:56:55,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 13:56:55,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 13:56:55,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 13:56:55,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 13:56:55,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 13:56:55,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 13:56:55,066 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 13:56:55,066 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 13:56:55,066 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 13:56:55,066 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 13:56:55,067 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 13:56:55,067 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 13:56:55,067 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 13:56:55,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 13:56:55,068 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 13:56:55,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 13:56:55,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 13:56:55,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 13:56:55,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 13:56:55,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 13:56:55,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 13:56:55,082 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 13:56:55,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 13:56:55,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 13:56:55,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 13:56:55,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 13:56:55,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 13:56:55,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 13:56:55,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 13:56:55,084 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 13:56:55,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2021-08-27 13:56:55,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 13:56:55,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 13:56:55,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 13:56:55,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 13:56:55,434 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 13:56:55,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2021-08-27 13:56:55,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c37560c/780be24ea3074c5a8f88a78bb2ab4025/FLAGa643d3da9 [2021-08-27 13:56:55,931 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 13:56:55,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2021-08-27 13:56:55,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c37560c/780be24ea3074c5a8f88a78bb2ab4025/FLAGa643d3da9 [2021-08-27 13:56:55,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c37560c/780be24ea3074c5a8f88a78bb2ab4025 [2021-08-27 13:56:55,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 13:56:55,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 13:56:55,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 13:56:55,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 13:56:55,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 13:56:55,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:56:55" (1/1) ... [2021-08-27 13:56:55,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789ba61d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:55, skipping insertion in model container [2021-08-27 13:56:55,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:56:55" (1/1) ... [2021-08-27 13:56:55,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 13:56:55,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 13:56:56,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:56:56,131 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 13:56:56,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:56:56,155 INFO L208 MainTranslator]: Completed translation [2021-08-27 13:56:56,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56 WrapperNode [2021-08-27 13:56:56,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 13:56:56,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 13:56:56,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 13:56:56,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 13:56:56,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 13:56:56,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 13:56:56,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 13:56:56,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 13:56:56,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 13:56:56,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 13:56:56,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 13:56:56,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 13:56:56,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (1/1) ... [2021-08-27 13:56:56,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:56,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:56,270 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) [2021-08-27 13:56:56,301 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 [2021-08-27 13:56:56,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 13:56:56,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 13:56:56,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 13:56:56,454 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 13:56:56,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:56 BoogieIcfgContainer [2021-08-27 13:56:56,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 13:56:56,459 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 13:56:56,459 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 13:56:56,462 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 13:56:56,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:56,464 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 01:56:55" (1/3) ... [2021-08-27 13:56:56,465 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@297f7264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:56:56, skipping insertion in model container [2021-08-27 13:56:56,465 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:56,465 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:56" (2/3) ... [2021-08-27 13:56:56,466 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@297f7264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:56:56, skipping insertion in model container [2021-08-27 13:56:56,466 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:56,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:56" (3/3) ... [2021-08-27 13:56:56,467 INFO L389 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2021-08-27 13:56:56,516 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 13:56:56,516 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 13:56:56,516 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 13:56:56,516 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 13:56:56,517 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 13:56:56,517 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 13:56:56,517 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 13:56:56,517 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 13:56:56,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:56,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:56,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:56,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:56,546 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:56:56,546 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:56,546 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 13:56:56,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:56,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:56,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:56,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:56,548 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:56:56,548 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:56,554 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 4#L17-2true [2021-08-27 13:56:56,554 INFO L793 eck$LassoCheckResult]: Loop: 4#L17-2true assume !!(0 != main_~x~0); 5#L17true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 4#L17-2true [2021-08-27 13:56:56,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:56,559 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 13:56:56,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:56,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245750263] [2021-08-27 13:56:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:56,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:56,640 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:56,658 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:56,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-08-27 13:56:56,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:56,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575375704] [2021-08-27 13:56:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:56,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:56,675 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:56,690 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-08-27 13:56:56,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:56,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823188562] [2021-08-27 13:56:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:56,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:56,704 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:56,713 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:56,836 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:56,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:56,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:56,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:56,837 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:56,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:56,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:56,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:56,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2021-08-27 13:56:56,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:56,837 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:56,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:56,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:56,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:56,959 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:56,960 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:56,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:56,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:56,963 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) [2021-08-27 13:56:56,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:56,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:56,983 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 [2021-08-27 13:56:56,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:56,995 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: [] [2021-08-27 13:56:57,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:57,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,026 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) [2021-08-27 13:56:57,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:57,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:57,052 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 [2021-08-27 13:56:57,069 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:57,069 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: [] [2021-08-27 13:56:57,094 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 [2021-08-27 13:56:57,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,096 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) [2021-08-27 13:56:57,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:57,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:57,114 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 [2021-08-27 13:56:57,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-08-27 13:56:57,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,142 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) [2021-08-27 13:56:57,147 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 [2021-08-27 13:56:57,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:57,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:57,185 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:57,192 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 [2021-08-27 13:56:57,192 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:57,192 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:57,192 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:57,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:57,193 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:57,193 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,193 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:57,193 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:57,193 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2021-08-27 13:56:57,193 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:57,193 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:57,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:57,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:57,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:57,254 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:57,258 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:57,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,260 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) [2021-08-27 13:56:57,272 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 [2021-08-27 13:56:57,275 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 [2021-08-27 13:56:57,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:57,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:57,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:57,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:57,287 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:57,287 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:57,296 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:57,315 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 [2021-08-27 13:56:57,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,316 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) [2021-08-27 13:56:57,317 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 [2021-08-27 13:56:57,318 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 [2021-08-27 13:56:57,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:57,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:57,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:57,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:57,327 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:57,328 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:57,350 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:57,366 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 [2021-08-27 13:56:57,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,367 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) [2021-08-27 13:56:57,369 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 [2021-08-27 13:56:57,372 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 [2021-08-27 13:56:57,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:57,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:57,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:57,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:57,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:57,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:57,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:57,397 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:57,401 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:56:57,401 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 13:56:57,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,405 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) [2021-08-27 13:56:57,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:57,414 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:57,414 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:57,414 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 13:56:57,435 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 [2021-08-27 13:56:57,439 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 [2021-08-27 13:56:57,442 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:57,467 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:57,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:57,476 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:57,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:57,516 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 [2021-08-27 13:56:57,516 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 [2021-08-27 13:56:57,518 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 13:56:57,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 23 states and 30 transitions. Complement of second has 6 states. [2021-08-27 13:56:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-08-27 13:56:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-08-27 13:56:57,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2021-08-27 13:56:57,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:57,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-27 13:56:57,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:57,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-27 13:56:57,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:57,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2021-08-27 13:56:57,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:57,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2021-08-27 13:56:57,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-08-27 13:56:57,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-08-27 13:56:57,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-08-27 13:56:57,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:57,569 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-27 13:56:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-08-27 13:56:57,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-08-27 13:56:57,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-08-27 13:56:57,590 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-27 13:56:57,590 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-27 13:56:57,590 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 13:56:57,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-08-27 13:56:57,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:57,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:57,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:57,592 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 13:56:57,592 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:57,592 INFO L791 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L17-2 assume !!(0 != main_~x~0); 67#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 63#L17-2 [2021-08-27 13:56:57,593 INFO L793 eck$LassoCheckResult]: Loop: 63#L17-2 assume !!(0 != main_~x~0); 64#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 63#L17-2 [2021-08-27 13:56:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:57,593 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-08-27 13:56:57,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:57,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400458593] [2021-08-27 13:56:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:57,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:57,604 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:57,610 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:57,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:57,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2021-08-27 13:56:57,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:57,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382393889] [2021-08-27 13:56:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:57,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:57,616 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:57,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2021-08-27 13:56:57,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:57,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952282809] [2021-08-27 13:56:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:57,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:57,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 13:56:57,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952282809] [2021-08-27 13:56:57,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952282809] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 13:56:57,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002584510] [2021-08-27 13:56:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:57,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 13:56:57,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,658 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 13:56:57,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 13:56:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:57,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:57,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:57,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002584510] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 13:56:57,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 13:56:57,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 13:56:57,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580729100] [2021-08-27 13:56:57,747 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:57,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:57,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:57,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:57,747 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:57,747 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,747 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:57,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:57,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2021-08-27 13:56:57,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:57,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:57,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:57,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:57,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:57,797 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:57,797 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:57,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,802 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) [2021-08-27 13:56:57,803 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 [2021-08-27 13:56:57,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:57,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:57,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:57,822 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: [] [2021-08-27 13:56:57,847 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 [2021-08-27 13:56:57,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,848 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) [2021-08-27 13:56:57,849 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 [2021-08-27 13:56:57,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:57,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:57,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:57,889 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: [] [2021-08-27 13:56:57,914 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 [2021-08-27 13:56:57,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,920 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) [2021-08-27 13:56:57,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:57,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:57,936 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 [2021-08-27 13:56:57,960 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 [2021-08-27 13:56:57,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:57,962 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) [2021-08-27 13:56:57,965 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 [2021-08-27 13:56:57,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:57,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:57,993 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:57,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-08-27 13:56:57,998 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:57,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:57,998 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:57,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:57,998 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:57,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:57,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:57,998 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:57,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2021-08-27 13:56:57,999 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:57,999 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:58,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,065 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:58,066 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:58,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,067 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) [2021-08-27 13:56:58,068 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 [2021-08-27 13:56:58,072 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 [2021-08-27 13:56:58,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:58,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:58,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:58,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:58,082 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:58,082 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:58,086 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:58,103 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 [2021-08-27 13:56:58,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,105 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) [2021-08-27 13:56:58,114 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 [2021-08-27 13:56:58,120 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 [2021-08-27 13:56:58,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:58,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:58,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:58,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:58,124 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:58,125 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:58,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:58,161 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 [2021-08-27 13:56:58,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,163 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) [2021-08-27 13:56:58,165 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 [2021-08-27 13:56:58,166 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 [2021-08-27 13:56:58,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:58,172 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:58,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:58,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:58,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:58,173 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:58,173 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:58,184 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:58,188 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:56:58,188 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:56:58,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,189 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) [2021-08-27 13:56:58,193 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 [2021-08-27 13:56:58,194 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:58,194 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:58,194 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:58,194 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 13:56:58,209 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 [2021-08-27 13:56:58,210 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:58,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:58,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:58,244 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:58,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:58,259 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 [2021-08-27 13:56:58,259 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:58,270 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 16 transitions. Complement of second has 5 states. [2021-08-27 13:56:58,271 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 [2021-08-27 13:56:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-08-27 13:56:58,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-27 13:56:58,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:58,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2021-08-27 13:56:58,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:58,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2021-08-27 13:56:58,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:58,272 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2021-08-27 13:56:58,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:58,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2021-08-27 13:56:58,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-08-27 13:56:58,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-08-27 13:56:58,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2021-08-27 13:56:58,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:58,274 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-08-27 13:56:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2021-08-27 13:56:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-27 13:56:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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) [2021-08-27 13:56:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2021-08-27 13:56:58,275 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2021-08-27 13:56:58,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 13:56:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 13:56:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 13:56:58,279 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-08-27 13:56:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 13:56:58,303 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2021-08-27 13:56:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 13:56:58,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2021-08-27 13:56:58,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:58,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2021-08-27 13:56:58,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-08-27 13:56:58,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-08-27 13:56:58,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2021-08-27 13:56:58,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:58,305 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-08-27 13:56:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2021-08-27 13:56:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2021-08-27 13:56:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-08-27 13:56:58,306 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-08-27 13:56:58,306 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-08-27 13:56:58,306 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 13:56:58,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2021-08-27 13:56:58,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:58,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:58,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:58,307 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 13:56:58,307 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:58,307 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 158#L17-2 assume !!(0 != main_~x~0); 153#L17 [2021-08-27 13:56:58,307 INFO L793 eck$LassoCheckResult]: Loop: 153#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 154#L17-2 assume !!(0 != main_~x~0); 153#L17 [2021-08-27 13:56:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 13:56:58,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:58,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043637090] [2021-08-27 13:56:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:58,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,311 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2021-08-27 13:56:58,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:58,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023362086] [2021-08-27 13:56:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:58,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,317 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,320 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,320 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2021-08-27 13:56:58,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:58,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176727906] [2021-08-27 13:56:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:58,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,325 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,328 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:58,343 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:58,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:58,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:58,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:58,344 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:58,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,344 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:58,344 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:58,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2021-08-27 13:56:58,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:58,345 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:58,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,379 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 [2021-08-27 13:56:58,424 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:58,425 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:58,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,437 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) [2021-08-27 13:56:58,438 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 [2021-08-27 13:56:58,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:58,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:58,458 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:58,458 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:58,474 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 [2021-08-27 13:56:58,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,475 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) [2021-08-27 13:56:58,476 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 [2021-08-27 13:56:58,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:58,477 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:58,502 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 [2021-08-27 13:56:58,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,510 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:58,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 13:56:58,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:58,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:58,584 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:58,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:58,587 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:58,587 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:58,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:58,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:58,587 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:58,587 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,587 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:58,587 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:58,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2021-08-27 13:56:58,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:58,587 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:58,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,655 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:58,655 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:58,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,656 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2021-08-27 13:56:58,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 13:56:58,659 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 [2021-08-27 13:56:58,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:58,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:58,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:58,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:58,668 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:58,668 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:58,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:58,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:58,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,708 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:58,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 13:56:58,710 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 [2021-08-27 13:56:58,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:58,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:58,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:58,717 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 13:56:58,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:58,718 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 13:56:58,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:58,733 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:58,736 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:56:58,736 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:56:58,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:58,741 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:58,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 13:56:58,743 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:58,743 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:58,743 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:58,743 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-08-27 13:56:58,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:58,769 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:58,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:58,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:58,793 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:58,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:58,816 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:56:58,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:58,847 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 13 transitions. Complement of second has 5 states. [2021-08-27 13:56:58,848 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 [2021-08-27 13:56:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-27 13:56:58,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-08-27 13:56:58,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:58,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2021-08-27 13:56:58,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:58,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2021-08-27 13:56:58,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:58,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2021-08-27 13:56:58,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:58,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:58,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2021-08-27 13:56:58,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-08-27 13:56:58,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-08-27 13:56:58,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-08-27 13:56:58,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:56:58,855 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-08-27 13:56:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-08-27 13:56:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-08-27 13:56:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-08-27 13:56:58,856 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-08-27 13:56:58,856 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-08-27 13:56:58,856 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 13:56:58,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-08-27 13:56:58,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 13:56:58,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:58,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:58,857 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2021-08-27 13:56:58,857 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 13:56:58,857 INFO L791 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 203#L17-2 assume !!(0 != main_~x~0); 204#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 205#L17-2 assume !!(0 != main_~x~0); 206#L17 [2021-08-27 13:56:58,857 INFO L793 eck$LassoCheckResult]: Loop: 206#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 207#L17-2 assume !!(0 != main_~x~0); 206#L17 [2021-08-27 13:56:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2021-08-27 13:56:58,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:58,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539841987] [2021-08-27 13:56:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:58,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,862 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,865 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2021-08-27 13:56:58,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:58,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033932626] [2021-08-27 13:56:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:58,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,870 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:58,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:58,874 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2021-08-27 13:56:58,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:58,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946744583] [2021-08-27 13:56:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:58,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:58,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 13:56:58,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946744583] [2021-08-27 13:56:58,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946744583] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 13:56:58,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 13:56:58,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 13:56:58,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949206745] [2021-08-27 13:56:58,947 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:58,948 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:58,948 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:58,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:58,948 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:58,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:58,948 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:58,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:58,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2021-08-27 13:56:58,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:58,949 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:58,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:58,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:59,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:59,033 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:59,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:59,037 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:59,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:59,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:59,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 13:56:59,066 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:56:59,066 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:56:59,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:59,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:59,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:59,093 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:59,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 13:56:59,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:59,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:59,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-08-27 13:56:59,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:59,140 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:59,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 13:56:59,142 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:59,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:59,218 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:59,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-08-27 13:56:59,221 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:59,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:59,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:59,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:59,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:59,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:59,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:59,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:59,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2021-08-27 13:56:59,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:59,222 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:59,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:59,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:59,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:59,314 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:59,314 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:59,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:59,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:59,315 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2021-08-27 13:56:59,329 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 [2021-08-27 13:56:59,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 13:56:59,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:59,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:59,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:59,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:59,340 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 13:56:59,340 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 13:56:59,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:56:59,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:59,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:59,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:59,380 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2021-08-27 13:56:59,383 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 [2021-08-27 13:56:59,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 13:56:59,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:59,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:59,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:59,390 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 13:56:59,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:59,392 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 13:56:59,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:59,401 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:59,404 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:56:59,404 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:56:59,404 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:59,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:59,405 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2021-08-27 13:56:59,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-27 13:56:59,407 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:59,407 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:59,407 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:59,407 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-08-27 13:56:59,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:59,440 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:59,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:59,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:59,476 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:59,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:59,511 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:56:59,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:59,516 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 8 transitions. Complement of second has 3 states. [2021-08-27 13:56:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2021-08-27 13:56:59,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2021-08-27 13:56:59,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:59,517 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 13:56:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:59,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:59,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:59,553 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:59,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:59,586 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:56:59,586 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:59,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 7 states and 8 transitions. Complement of second has 3 states. [2021-08-27 13:56:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2021-08-27 13:56:59,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2021-08-27 13:56:59,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:59,591 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 13:56:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:59,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:59,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:59,625 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:56:59,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:59,654 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 13:56:59,654 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:59,665 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 4 states. [2021-08-27 13:56:59,666 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 [2021-08-27 13:56:59,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-08-27 13:56:59,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2021-08-27 13:56:59,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:59,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2021-08-27 13:56:59,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:59,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2021-08-27 13:56:59,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:59,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-08-27 13:56:59,669 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:56:59,669 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2021-08-27 13:56:59,669 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 13:56:59,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 13:56:59,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 13:56:59,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 13:56:59,669 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:59,669 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:59,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 13:56:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 13:56:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 13:56:59,673 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.5) 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) [2021-08-27 13:56:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 13:56:59,673 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 13:56:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 13:56:59,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 13:56:59,674 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:56:59,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 13:56:59,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 13:56:59,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 13:56:59,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 13:56:59,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 13:56:59,675 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:59,675 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:59,675 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:59,675 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 13:56:59,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 13:56:59,675 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:56:59,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 13:56:59,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 01:56:59 BoogieIcfgContainer [2021-08-27 13:56:59,679 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 13:56:59,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 13:56:59,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 13:56:59,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 13:56:59,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:56" (3/4) ... [2021-08-27 13:56:59,682 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 13:56:59,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 13:56:59,683 INFO L168 Benchmark]: Toolchain (without parser) took 3720.79 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 31.6 MB in the beginning and 29.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:59,683 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:59,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.48 ms. Allocated memory is still 54.5 MB. Free memory was 31.4 MB in the beginning and 36.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:59,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.01 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 36.7 MB in the beginning and 55.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:59,684 INFO L168 Benchmark]: Boogie Preprocessor took 16.69 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 54.7 MB in the end (delta: 905.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:59,685 INFO L168 Benchmark]: RCFGBuilder took 225.37 ms. Allocated memory is still 71.3 MB. Free memory was 54.7 MB in the beginning and 46.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:59,685 INFO L168 Benchmark]: BuchiAutomizer took 3220.19 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 46.3 MB in the beginning and 29.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:59,685 INFO L168 Benchmark]: Witness Printer took 2.15 ms. Allocated memory is still 86.0 MB. Free memory is still 29.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:59,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.7 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 191.48 ms. Allocated memory is still 54.5 MB. Free memory was 31.4 MB in the beginning and 36.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.01 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 36.7 MB in the beginning and 55.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.69 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 54.7 MB in the end (delta: 905.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 225.37 ms. Allocated memory is still 71.3 MB. Free memory was 54.7 MB in the beginning and 46.5 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3220.19 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 46.3 MB in the beginning and 29.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.15 ms. Allocated memory is still 86.0 MB. Free memory is still 29.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 12.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.2ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 13:56:59,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:59,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 13:57:00,133 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...