./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/nested9.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 18:39:19,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 18:39:19,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 18:39:19,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 18:39:19,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 18:39:19,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 18:39:19,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 18:39:19,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 18:39:19,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 18:39:19,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 18:39:19,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 18:39:19,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 18:39:19,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 18:39:19,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 18:39:19,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 18:39:19,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 18:39:19,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 18:39:19,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 18:39:19,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 18:39:19,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 18:39:19,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 18:39:19,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 18:39:19,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 18:39:19,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 18:39:19,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 18:39:19,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 18:39:19,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 18:39:19,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 18:39:19,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 18:39:19,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 18:39:19,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 18:39:19,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 18:39:19,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 18:39:19,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 18:39:19,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 18:39:19,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 18:39:19,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 18:39:19,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 18:39:19,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 18:39:19,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 18:39:19,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 18:39:19,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 18:39:19,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 18:39:19,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 18:39:19,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 18:39:19,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 18:39:19,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 18:39:19,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 18:39:19,151 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 18:39:19,151 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 18:39:19,151 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 18:39:19,151 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 18:39:19,152 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 18:39:19,152 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 18:39:19,152 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 18:39:19,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 18:39:19,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 18:39:19,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 18:39:19,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 18:39:19,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 18:39:19,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 18:39:19,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 18:39:19,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 18:39:19,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 18:39:19,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 18:39:19,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 18:39:19,155 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 18:39:19,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 18:39:19,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 18:39:19,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 18:39:19,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 18:39:19,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 18:39:19,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 18:39:19,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 18:39:19,157 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 18:39:19,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-12-19 18:39:19,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 18:39:19,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 18:39:19,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 18:39:19,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 18:39:19,380 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 18:39:19,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nested9.i [2021-12-19 18:39:19,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb6356bd/d95236219602427a96e77ce8577449cf/FLAG69787309b [2021-12-19 18:39:19,787 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 18:39:19,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nested9.i [2021-12-19 18:39:19,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb6356bd/d95236219602427a96e77ce8577449cf/FLAG69787309b [2021-12-19 18:39:19,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb6356bd/d95236219602427a96e77ce8577449cf [2021-12-19 18:39:19,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 18:39:19,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 18:39:19,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 18:39:19,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 18:39:19,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 18:39:19,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:39:19" (1/1) ... [2021-12-19 18:39:19,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cc49b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:19, skipping insertion in model container [2021-12-19 18:39:19,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:39:19" (1/1) ... [2021-12-19 18:39:19,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 18:39:19,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 18:39:19,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-12-19 18:39:20,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:39:20,014 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 18:39:20,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-12-19 18:39:20,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:39:20,045 INFO L208 MainTranslator]: Completed translation [2021-12-19 18:39:20,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20 WrapperNode [2021-12-19 18:39:20,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 18:39:20,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 18:39:20,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 18:39:20,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 18:39:20,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,071 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2021-12-19 18:39:20,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 18:39:20,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 18:39:20,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 18:39:20,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 18:39:20,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 18:39:20,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 18:39:20,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 18:39:20,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 18:39:20,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (1/1) ... [2021-12-19 18:39:20,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:20,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:20,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 18:39:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 18:39:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 18:39:20,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 18:39:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 18:39:20,214 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 18:39:20,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 18:39:20,301 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 18:39:20,305 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 18:39:20,306 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-19 18:39:20,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:39:20 BoogieIcfgContainer [2021-12-19 18:39:20,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 18:39:20,308 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 18:39:20,308 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 18:39:20,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 18:39:20,310 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:39:20,311 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 06:39:19" (1/3) ... [2021-12-19 18:39:20,311 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58a32e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:39:20, skipping insertion in model container [2021-12-19 18:39:20,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:39:20,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:39:20" (2/3) ... [2021-12-19 18:39:20,312 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58a32e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:39:20, skipping insertion in model container [2021-12-19 18:39:20,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:39:20,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:39:20" (3/3) ... [2021-12-19 18:39:20,313 INFO L388 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-12-19 18:39:20,341 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 18:39:20,341 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 18:39:20,341 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 18:39:20,341 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 18:39:20,341 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 18:39:20,341 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 18:39:20,341 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 18:39:20,342 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 18:39:20,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:20,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-19 18:39:20,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:20,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:20,364 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:20,364 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:39:20,364 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 18:39:20,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:20,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-19 18:39:20,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:20,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:20,366 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:20,366 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:39:20,371 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 5#L30true assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 7#L33true assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 6#L33-1true main_~i~0#1 := 0; 22#L34-3true [2021-12-19 18:39:20,371 INFO L793 eck$LassoCheckResult]: Loop: 22#L34-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 13#L35-3true assume !true; 12#L34-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 22#L34-3true [2021-12-19 18:39:20,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-12-19 18:39:20,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:20,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457138325] [2021-12-19 18:39:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:20,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 62657, now seen corresponding path program 1 times [2021-12-19 18:39:20,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:20,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336272617] [2021-12-19 18:39:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:20,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:20,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:39:20,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336272617] [2021-12-19 18:39:20,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336272617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 18:39:20,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 18:39:20,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 18:39:20,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105880030] [2021-12-19 18:39:20,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 18:39:20,488 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 18:39:20,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:39:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-19 18:39:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-19 18:39:20,509 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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 2 states, 2 states have (on average 1.5) 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) [2021-12-19 18:39:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:39:20,513 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-12-19 18:39:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-19 18:39:20,518 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2021-12-19 18:39:20,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-19 18:39:20,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2021-12-19 18:39:20,521 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-19 18:39:20,521 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-19 18:39:20,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2021-12-19 18:39:20,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 18:39:20,522 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-19 18:39:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2021-12-19 18:39:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-19 18:39:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-12-19 18:39:20,538 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-19 18:39:20,538 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-19 18:39:20,538 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 18:39:20,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-12-19 18:39:20,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-19 18:39:20,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:20,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:20,540 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:20,540 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:39:20,540 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 49#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 50#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 51#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 55#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 54#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 52#L33-1 main_~i~0#1 := 0; 53#L34-3 [2021-12-19 18:39:20,540 INFO L793 eck$LassoCheckResult]: Loop: 53#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 60#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 59#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 53#L34-3 [2021-12-19 18:39:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-12-19 18:39:20,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:20,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022502418] [2021-12-19 18:39:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:20,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,549 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,558 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash 61789, now seen corresponding path program 1 times [2021-12-19 18:39:20,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707684760] [2021-12-19 18:39:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:20,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,565 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,569 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 763900017, now seen corresponding path program 1 times [2021-12-19 18:39:20,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:20,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033762668] [2021-12-19 18:39:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:20,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,580 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:20,589 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:20,643 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:20,644 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:20,644 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:20,644 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:20,645 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:39:20,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:20,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:20,645 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:20,645 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-12-19 18:39:20,645 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:20,645 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:20,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:20,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:20,696 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:20,697 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:39:20,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:20,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:20,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:20,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 18:39:20,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:20,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:20,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 18:39:20,737 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 18:39:20,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-19 18:39:20,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:20,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:20,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:20,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 18:39:20,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:20,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:20,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:20,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:20,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:20,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:20,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 18:39:20,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:39:20,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:20,933 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:39:20,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:20,936 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:20,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:20,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:20,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:20,937 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:39:20,937 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:20,937 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:20,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:20,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-12-19 18:39:20,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:20,937 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:20,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:20,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:20,989 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:20,992 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:39:20,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:20,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:20,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:21,010 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:21,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:21,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:21,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:21,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:21,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:21,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:21,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:21,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 18:39:21,024 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:39:21,033 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:39:21,033 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 18:39:21,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:21,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:21,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:21,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 18:39:21,038 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:39:21,038 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:39:21,039 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:39:21,039 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-19 18:39:21,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-19 18:39:21,057 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:39:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:21,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:21,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:21,120 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 18:39:21,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:21,158 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-19 18:39:21,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-19 18:39:21,204 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Result 40 states and 50 transitions. Complement of second has 8 states. [2021-12-19 18:39:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-19 18:39:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-12-19 18:39:21,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-19 18:39:21,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:21,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-19 18:39:21,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:21,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-19 18:39:21,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:21,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-12-19 18:39:21,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-12-19 18:39:21,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 48 transitions. [2021-12-19 18:39:21,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-12-19 18:39:21,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-19 18:39:21,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 48 transitions. [2021-12-19 18:39:21,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:21,210 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-12-19 18:39:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 48 transitions. [2021-12-19 18:39:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-12-19 18:39:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-12-19 18:39:21,212 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-19 18:39:21,212 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-19 18:39:21,212 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 18:39:21,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2021-12-19 18:39:21,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-19 18:39:21,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:21,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:21,214 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:21,214 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-19 18:39:21,214 INFO L791 eck$LassoCheckResult]: Stem: 161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 163#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 164#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 168#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 167#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 165#L33-1 main_~i~0#1 := 0; 166#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-12-19 18:39:21,214 INFO L793 eck$LassoCheckResult]: Loop: 179#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 169#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 171#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 185#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 175#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 176#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-12-19 18:39:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-12-19 18:39:21,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:21,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600827194] [2021-12-19 18:39:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:21,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:21,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:21,228 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 1 times [2021-12-19 18:39:21,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:21,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228216246] [2021-12-19 18:39:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:21,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:21,247 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:21,251 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:21,252 INFO L85 PathProgramCache]: Analyzing trace with hash -696653093, now seen corresponding path program 1 times [2021-12-19 18:39:21,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:21,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386903332] [2021-12-19 18:39:21,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:21,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:21,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:39:21,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386903332] [2021-12-19 18:39:21,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386903332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 18:39:21,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 18:39:21,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 18:39:21,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015615683] [2021-12-19 18:39:21,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 18:39:21,346 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:21,346 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:21,346 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:21,346 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:21,346 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:39:21,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:21,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:21,347 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:21,347 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-12-19 18:39:21,347 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:21,347 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:21,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:21,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:21,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:21,396 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:21,396 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:39:21,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:21,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:21,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:21,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 18:39:21,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:21,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:21,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:21,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:21,468 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:21,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:21,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 18:39:21,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:39:21,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:21,776 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:39:21,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:21,782 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:21,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:21,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:21,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:21,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:39:21,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:21,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:21,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:21,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-12-19 18:39:21,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:21,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:21,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:21,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:21,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:21,854 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:21,854 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:39:21,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:21,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:21,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:21,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:21,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:21,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:21,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:21,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:21,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:21,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 18:39:21,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:21,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:21,902 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:39:21,905 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:39:21,906 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 18:39:21,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:21,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:21,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:21,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-19 18:39:21,937 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:39:21,937 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:39:21,938 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:39:21,938 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-12-19 18:39:21,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-19 18:39:21,954 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:39:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:21,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:21,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:22,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:22,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 18:39:22,043 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 [2021-12-19 18:39:22,043 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,058 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 61 transitions. Complement of second has 6 states. [2021-12-19 18:39:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-19 18:39:22,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 8 letters. Loop has 6 letters. [2021-12-19 18:39:22,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:22,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 14 letters. Loop has 6 letters. [2021-12-19 18:39:22,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:22,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 8 letters. Loop has 12 letters. [2021-12-19 18:39:22,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:22,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 61 transitions. [2021-12-19 18:39:22,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 18:39:22,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 36 states and 47 transitions. [2021-12-19 18:39:22,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-19 18:39:22,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-12-19 18:39:22,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 47 transitions. [2021-12-19 18:39:22,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:22,065 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-12-19 18:39:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 47 transitions. [2021-12-19 18:39:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-12-19 18:39:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-12-19 18:39:22,068 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-12-19 18:39:22,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:39:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 18:39:22,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 18:39:22,068 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:39:22,079 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-12-19 18:39:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 18:39:22,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 47 transitions. [2021-12-19 18:39:22,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 18:39:22,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 37 states and 46 transitions. [2021-12-19 18:39:22,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-19 18:39:22,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-19 18:39:22,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 46 transitions. [2021-12-19 18:39:22,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:22,082 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2021-12-19 18:39:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 46 transitions. [2021-12-19 18:39:22,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-12-19 18:39:22,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.25) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-12-19 18:39:22,084 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-12-19 18:39:22,084 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-12-19 18:39:22,084 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 18:39:22,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 45 transitions. [2021-12-19 18:39:22,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 18:39:22,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:22,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:22,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:22,086 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:39:22,086 INFO L791 eck$LassoCheckResult]: Stem: 377#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 379#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 380#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 384#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 383#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 381#L33-1 main_~i~0#1 := 0; 382#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 394#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 395#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 412#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 410#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 385#L36-3 [2021-12-19 18:39:22,086 INFO L793 eck$LassoCheckResult]: Loop: 385#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 387#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 393#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 385#L36-3 [2021-12-19 18:39:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 1 times [2021-12-19 18:39:22,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:22,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129125194] [2021-12-19 18:39:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:22,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,094 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:22,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash 76021, now seen corresponding path program 1 times [2021-12-19 18:39:22,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:22,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570769449] [2021-12-19 18:39:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:22,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,106 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,108 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:22,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1296088643, now seen corresponding path program 2 times [2021-12-19 18:39:22,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:22,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935122415] [2021-12-19 18:39:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:22,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 18:39:22,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:39:22,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935122415] [2021-12-19 18:39:22,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935122415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 18:39:22,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 18:39:22,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 18:39:22,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935795653] [2021-12-19 18:39:22,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 18:39:22,159 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:22,160 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:22,160 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:22,160 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:22,160 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:39:22,160 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,160 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:22,160 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:22,160 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-12-19 18:39:22,160 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:22,160 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:22,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:22,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:22,190 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:22,190 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:39:22,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:22,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:22,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-19 18:39:22,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:22,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:22,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 18:39:22,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 18:39:22,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:22,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:22,239 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:22,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-19 18:39:22,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:22,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:22,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:22,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:22,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:22,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-19 18:39:22,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:39:22,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:22,561 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:39:22,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:22,565 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:22,565 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:22,565 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:22,565 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:22,565 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:39:22,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:22,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:22,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-12-19 18:39:22,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:22,566 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:22,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:22,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:22,604 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:22,605 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:39:22,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:22,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:22,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-19 18:39:22,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:22,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:22,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:22,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:22,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:22,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:22,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:22,620 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:22,628 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 18:39:22,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:22,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:22,645 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:22,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-19 18:39:22,647 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:22,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:22,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:22,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:22,654 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:22,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:22,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:22,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:22,657 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:39:22,658 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:39:22,659 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 18:39:22,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:22,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:22,660 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:22,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-19 18:39:22,661 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:39:22,662 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:39:22,662 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:39:22,662 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-19 18:39:22,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:22,678 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:39:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:22,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:22,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:22,731 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:22,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:22,743 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 [2021-12-19 18:39:22,743 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 45 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,760 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 45 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 86 states and 115 transitions. Complement of second has 7 states. [2021-12-19 18:39:22,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-12-19 18:39:22,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2021-12-19 18:39:22,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:22,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2021-12-19 18:39:22,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:22,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2021-12-19 18:39:22,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:22,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 115 transitions. [2021-12-19 18:39:22,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-19 18:39:22,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 81 states and 108 transitions. [2021-12-19 18:39:22,763 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-12-19 18:39:22,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-12-19 18:39:22,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 108 transitions. [2021-12-19 18:39:22,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:22,764 INFO L681 BuchiCegarLoop]: Abstraction has 81 states and 108 transitions. [2021-12-19 18:39:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states and 108 transitions. [2021-12-19 18:39:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2021-12-19 18:39:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.3461538461538463) internal successors, (105), 77 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 105 transitions. [2021-12-19 18:39:22,767 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 105 transitions. [2021-12-19 18:39:22,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:39:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 18:39:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 18:39:22,768 INFO L87 Difference]: Start difference. First operand 78 states and 105 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:39:22,784 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2021-12-19 18:39:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 18:39:22,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 102 transitions. [2021-12-19 18:39:22,786 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-12-19 18:39:22,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 81 states and 102 transitions. [2021-12-19 18:39:22,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-12-19 18:39:22,787 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-12-19 18:39:22,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 102 transitions. [2021-12-19 18:39:22,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:22,787 INFO L681 BuchiCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-12-19 18:39:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states and 102 transitions. [2021-12-19 18:39:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-12-19 18:39:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 80 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-12-19 18:39:22,793 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-12-19 18:39:22,793 INFO L587 BuchiCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-12-19 18:39:22,793 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 18:39:22,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states and 102 transitions. [2021-12-19 18:39:22,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-12-19 18:39:22,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:22,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:22,794 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:22,794 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 18:39:22,794 INFO L791 eck$LassoCheckResult]: Stem: 731#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 732#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 733#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 734#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 738#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 737#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 735#L33-1 main_~i~0#1 := 0; 736#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 761#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 781#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 779#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 745#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 746#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 766#L18 [2021-12-19 18:39:22,794 INFO L793 eck$LassoCheckResult]: Loop: 766#L18 assume !(0 == __VERIFIER_assert_~cond#1); 757#L18-2 assume { :end_inline___VERIFIER_assert } true; 750#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 751#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 766#L18 [2021-12-19 18:39:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1686263017, now seen corresponding path program 1 times [2021-12-19 18:39:22,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:22,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331998608] [2021-12-19 18:39:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:22,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,803 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,844 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2619672, now seen corresponding path program 1 times [2021-12-19 18:39:22,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:22,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878895238] [2021-12-19 18:39:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:22,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,856 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:22,859 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash 928046, now seen corresponding path program 1 times [2021-12-19 18:39:22,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:22,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717563026] [2021-12-19 18:39:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:22,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:22,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:22,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:22,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:39:22,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717563026] [2021-12-19 18:39:22,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717563026] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 18:39:22,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288027007] [2021-12-19 18:39:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:22,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 18:39:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:22,932 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 18:39:22,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-19 18:39:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:22,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 18:39:22,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:23,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 18:39:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:23,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288027007] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 18:39:23,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 18:39:23,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-19 18:39:23,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899853382] [2021-12-19 18:39:23,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 18:39:23,085 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:23,085 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:23,086 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:23,086 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:23,086 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:39:23,086 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:23,086 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:23,086 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:23,086 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-12-19 18:39:23,086 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:23,086 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:23,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:23,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:23,244 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:23,244 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:39:23,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:23,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:23,248 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:23,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-19 18:39:23,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:23,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:23,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:23,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:23,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:23,291 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:23,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-19 18:39:23,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:39:23,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:24,404 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:39:24,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:24,410 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:24,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:24,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:24,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:24,410 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:39:24,410 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:24,410 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:24,410 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:24,410 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-12-19 18:39:24,410 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:24,410 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:24,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:24,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:24,563 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:24,563 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:39:24,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:24,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:24,584 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:24,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:24,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:24,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:24,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:24,596 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-12-19 18:39:24,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:24,601 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-12-19 18:39:24,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:24,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-19 18:39:24,612 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:39:24,616 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:39:24,616 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 18:39:24,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:24,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:24,632 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) [2021-12-19 18:39:24,636 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:39:24,636 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:39:24,636 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:39:24,637 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-19 18:39:24,651 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 [2021-12-19 18:39:24,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:24,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:39:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:24,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:24,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:24,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:24,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:24,714 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 [2021-12-19 18:39:24,714 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 31 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-12-19 18:39:24,733 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 31. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) Result 154 states and 183 transitions. Complement of second has 7 states. [2021-12-19 18:39:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-12-19 18:39:24,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-19 18:39:24,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-19 18:39:24,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:24,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 17 letters. Loop has 4 letters. [2021-12-19 18:39:24,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:24,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 8 letters. [2021-12-19 18:39:24,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:24,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 183 transitions. [2021-12-19 18:39:24,736 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-12-19 18:39:24,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 132 states and 159 transitions. [2021-12-19 18:39:24,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-12-19 18:39:24,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-12-19 18:39:24,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 159 transitions. [2021-12-19 18:39:24,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:24,737 INFO L681 BuchiCegarLoop]: Abstraction has 132 states and 159 transitions. [2021-12-19 18:39:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states and 159 transitions. [2021-12-19 18:39:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 118. [2021-12-19 18:39:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 118 states have (on average 1.228813559322034) internal successors, (145), 117 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 145 transitions. [2021-12-19 18:39:24,750 INFO L704 BuchiCegarLoop]: Abstraction has 118 states and 145 transitions. [2021-12-19 18:39:24,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:39:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 18:39:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-19 18:39:24,751 INFO L87 Difference]: Start difference. First operand 118 states and 145 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:24,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-19 18:39:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:39:24,870 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2021-12-19 18:39:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 18:39:24,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 137 transitions. [2021-12-19 18:39:24,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-19 18:39:24,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 90 states and 105 transitions. [2021-12-19 18:39:24,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-19 18:39:24,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-19 18:39:24,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 105 transitions. [2021-12-19 18:39:24,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:24,873 INFO L681 BuchiCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-12-19 18:39:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 105 transitions. [2021-12-19 18:39:24,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 69. [2021-12-19 18:39:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 68 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2021-12-19 18:39:24,876 INFO L704 BuchiCegarLoop]: Abstraction has 69 states and 82 transitions. [2021-12-19 18:39:24,876 INFO L587 BuchiCegarLoop]: Abstraction has 69 states and 82 transitions. [2021-12-19 18:39:24,876 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 18:39:24,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 82 transitions. [2021-12-19 18:39:24,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-19 18:39:24,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:24,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:24,877 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:24,877 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:24,877 INFO L791 eck$LassoCheckResult]: Stem: 1395#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1396#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1397#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1398#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1402#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1401#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1399#L33-1 main_~i~0#1 := 0; 1400#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1425#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1433#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1430#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1409#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1410#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1446#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1444#L18-2 assume { :end_inline___VERIFIER_assert } true; 1440#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1439#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1436#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1435#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1434#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1432#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1428#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1403#L36-3 [2021-12-19 18:39:24,877 INFO L793 eck$LassoCheckResult]: Loop: 1403#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1404#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1417#L18-2 assume { :end_inline___VERIFIER_assert } true; 1413#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1414#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1421#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1422#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1403#L36-3 [2021-12-19 18:39:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:24,878 INFO L85 PathProgramCache]: Analyzing trace with hash 504421370, now seen corresponding path program 1 times [2021-12-19 18:39:24,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:24,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719725847] [2021-12-19 18:39:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:24,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:24,891 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:24,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 1 times [2021-12-19 18:39:24,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:24,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602908080] [2021-12-19 18:39:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:24,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:24,906 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:24,910 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1334545203, now seen corresponding path program 2 times [2021-12-19 18:39:24,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:24,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198654456] [2021-12-19 18:39:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:24,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-19 18:39:24,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 18:39:24,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198654456] [2021-12-19 18:39:24,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198654456] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 18:39:24,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707925249] [2021-12-19 18:39:24,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 18:39:24,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 18:39:24,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:24,958 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 18:39:24,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-19 18:39:24,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 18:39:24,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 18:39:24,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 18:39:24,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-19 18:39:25,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 18:39:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-19 18:39:25,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707925249] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 18:39:25,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 18:39:25,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-12-19 18:39:25,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456522089] [2021-12-19 18:39:25,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 18:39:25,186 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:25,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:25,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:25,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:25,186 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:39:25,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:25,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:25,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-12-19 18:39:25,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:25,187 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:25,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,235 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:25,236 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:39:25,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,239 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) [2021-12-19 18:39:25,240 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 [2021-12-19 18:39:25,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:25,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:25,249 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 18:39:25,249 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 18:39:25,267 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 [2021-12-19 18:39:25,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,268 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) [2021-12-19 18:39:25,269 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 [2021-12-19 18:39:25,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:25,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:25,283 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 18:39:25,283 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 18:39:25,301 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 [2021-12-19 18:39:25,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,302 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) [2021-12-19 18:39:25,304 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 [2021-12-19 18:39:25,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:25,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:25,312 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 18:39:25,312 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 18:39:25,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-19 18:39:25,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,328 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) [2021-12-19 18:39:25,329 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 [2021-12-19 18:39:25,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:25,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:25,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:25,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,354 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) [2021-12-19 18:39:25,355 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 [2021-12-19 18:39:25,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:39:25,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:25,732 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:39:25,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:25,737 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:25,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:25,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:25,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:25,737 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:39:25,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:25,737 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:25,737 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-12-19 18:39:25,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:25,737 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:25,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:25,793 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:25,793 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:39:25,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,797 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) [2021-12-19 18:39:25,799 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 [2021-12-19 18:39:25,799 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:25,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:25,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:25,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:25,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:25,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:25,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:25,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:25,820 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 18:39:25,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-19 18:39:25,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,837 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) [2021-12-19 18:39:25,840 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 [2021-12-19 18:39:25,840 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:25,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:25,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:25,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:25,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:25,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:25,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:25,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:25,850 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 18:39:25,865 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 [2021-12-19 18:39:25,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,867 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) [2021-12-19 18:39:25,868 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 [2021-12-19 18:39:25,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:25,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:25,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:25,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:25,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:25,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:25,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:25,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:25,890 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 18:39:25,908 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 [2021-12-19 18:39:25,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,910 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:25,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-19 18:39:25,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:25,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:25,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:25,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:25,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 18:39:25,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:25,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 18:39:25,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:25,944 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:39:25,951 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-19 18:39:25,951 INFO L444 ModelExtractionUtils]: 1 out of 6 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-12-19 18:39:25,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:25,953 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:25,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-19 18:39:25,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:39:25,956 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:39:25,956 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:39:25,956 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-19 18:39:25,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:25,972 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:39:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:26,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:26,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:26,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:26,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:26,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 18:39:26,089 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 [2021-12-19 18:39:26,089 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 82 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,105 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 82 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 97 states and 110 transitions. Complement of second has 7 states. [2021-12-19 18:39:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-19 18:39:26,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 22 letters. Loop has 7 letters. [2021-12-19 18:39:26,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:26,106 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 18:39:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:26,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:26,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:26,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:26,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 18:39:26,193 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 [2021-12-19 18:39:26,194 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 82 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,206 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 82 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 97 states and 110 transitions. Complement of second has 7 states. [2021-12-19 18:39:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-19 18:39:26,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 22 letters. Loop has 7 letters. [2021-12-19 18:39:26,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:26,207 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 18:39:26,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:26,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:26,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:26,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:26,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 18:39:26,280 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 [2021-12-19 18:39:26,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 82 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,297 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 82 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 115 states and 134 transitions. Complement of second has 6 states. [2021-12-19 18:39:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2021-12-19 18:39:26,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 7 letters. [2021-12-19 18:39:26,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:26,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 29 letters. Loop has 7 letters. [2021-12-19 18:39:26,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:26,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 14 letters. [2021-12-19 18:39:26,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:26,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 134 transitions. [2021-12-19 18:39:26,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 18:39:26,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 87 states and 104 transitions. [2021-12-19 18:39:26,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-19 18:39:26,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-12-19 18:39:26,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 104 transitions. [2021-12-19 18:39:26,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:26,301 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 104 transitions. [2021-12-19 18:39:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 104 transitions. [2021-12-19 18:39:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-12-19 18:39:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 81 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 99 transitions. [2021-12-19 18:39:26,303 INFO L704 BuchiCegarLoop]: Abstraction has 82 states and 99 transitions. [2021-12-19 18:39:26,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 18:39:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-19 18:39:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-19 18:39:26,304 INFO L87 Difference]: Start difference. First operand 82 states and 99 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 18:39:26,390 INFO L93 Difference]: Finished difference Result 153 states and 170 transitions. [2021-12-19 18:39:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 18:39:26,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 153 states and 170 transitions. [2021-12-19 18:39:26,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 18:39:26,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 153 states to 130 states and 146 transitions. [2021-12-19 18:39:26,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-12-19 18:39:26,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-12-19 18:39:26,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 146 transitions. [2021-12-19 18:39:26,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 18:39:26,392 INFO L681 BuchiCegarLoop]: Abstraction has 130 states and 146 transitions. [2021-12-19 18:39:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states and 146 transitions. [2021-12-19 18:39:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 101. [2021-12-19 18:39:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2021-12-19 18:39:26,395 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2021-12-19 18:39:26,395 INFO L587 BuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2021-12-19 18:39:26,395 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 18:39:26,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 117 transitions. [2021-12-19 18:39:26,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 18:39:26,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:39:26,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:39:26,396 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 18:39:26,396 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 18:39:26,396 INFO L791 eck$LassoCheckResult]: Stem: 2498#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 2499#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2500#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 2501#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 2505#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 2504#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 2502#L33-1 main_~i~0#1 := 0; 2503#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2523#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2533#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2531#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2512#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2513#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2554#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2553#L18-2 assume { :end_inline___VERIFIER_assert } true; 2552#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2541#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 2539#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 2537#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2534#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2530#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2527#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2529#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2507#L18 [2021-12-19 18:39:26,396 INFO L793 eck$LassoCheckResult]: Loop: 2507#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2518#L18-2 assume { :end_inline___VERIFIER_assert } true; 2516#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2506#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2507#L18 [2021-12-19 18:39:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1542806666, now seen corresponding path program 3 times [2021-12-19 18:39:26,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:26,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134676937] [2021-12-19 18:39:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:26,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:26,404 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:26,411 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2619672, now seen corresponding path program 2 times [2021-12-19 18:39:26,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:26,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336647150] [2021-12-19 18:39:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:26,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:26,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:26,415 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1902519795, now seen corresponding path program 4 times [2021-12-19 18:39:26,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:39:26,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057241624] [2021-12-19 18:39:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:39:26,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:39:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:26,422 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:39:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:39:26,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:39:26,457 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:26,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:26,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:26,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:26,457 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 18:39:26,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:26,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:26,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:26,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2021-12-19 18:39:26,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:26,457 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:26,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:26,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:26,603 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:26,603 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 18:39:26,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:26,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:26,604 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:26,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-19 18:39:26,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 18:39:26,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:26,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:26,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:26,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:26,631 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:26,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-19 18:39:26,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 18:39:26,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 18:39:27,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 18:39:27,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:27,269 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 18:39:27,269 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 18:39:27,269 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 18:39:27,269 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 18:39:27,269 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 18:39:27,269 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:27,269 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 18:39:27,269 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 18:39:27,269 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2021-12-19 18:39:27,269 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 18:39:27,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 18:39:27,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:27,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 18:39:27,427 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 18:39:27,427 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 18:39:27,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:27,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:27,429 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:27,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-19 18:39:27,436 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 18:39:27,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 18:39:27,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 18:39:27,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 18:39:27,443 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-12-19 18:39:27,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 18:39:27,447 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-12-19 18:39:27,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 18:39:27,457 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 18:39:27,462 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 18:39:27,462 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 18:39:27,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:39:27,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:39:27,464 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:39:27,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-19 18:39:27,466 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 18:39:27,466 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 18:39:27,466 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 18:39:27,466 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-19 18:39:27,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-19 18:39:27,482 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 18:39:27,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:27,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:27,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:27,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:27,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:27,562 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 [2021-12-19 18:39:27,562 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 101 states and 117 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:27,586 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 101 states and 117 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 156 states and 174 transitions. Complement of second has 7 states. [2021-12-19 18:39:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-19 18:39:27,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 23 letters. Loop has 4 letters. [2021-12-19 18:39:27,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:27,588 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 18:39:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:27,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:27,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:27,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:27,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:27,661 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 [2021-12-19 18:39:27,661 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 101 states and 117 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:27,673 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 101 states and 117 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 156 states and 174 transitions. Complement of second has 7 states. [2021-12-19 18:39:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-19 18:39:27,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 23 letters. Loop has 4 letters. [2021-12-19 18:39:27,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:27,674 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 18:39:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:39:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:27,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 18:39:27,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 18:39:27,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 18:39:27,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 18:39:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 18:39:27,739 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 [2021-12-19 18:39:27,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 101 states and 117 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:27,758 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 101 states and 117 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 166 states and 185 transitions. Complement of second has 6 states. [2021-12-19 18:39:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 18:39:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 18:39:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-12-19 18:39:27,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 4 letters. [2021-12-19 18:39:27,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:27,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 27 letters. Loop has 4 letters. [2021-12-19 18:39:27,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:27,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 8 letters. [2021-12-19 18:39:27,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 18:39:27,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 166 states and 185 transitions. [2021-12-19 18:39:27,760 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 18:39:27,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 166 states to 0 states and 0 transitions. [2021-12-19 18:39:27,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 18:39:27,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 18:39:27,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 18:39:27,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 18:39:27,760 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 18:39:27,760 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 18:39:27,760 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 18:39:27,760 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-19 18:39:27,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 18:39:27,760 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 18:39:27,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 18:39:27,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 06:39:27 BoogieIcfgContainer [2021-12-19 18:39:27,766 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 18:39:27,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 18:39:27,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 18:39:27,766 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 18:39:27,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:39:20" (3/4) ... [2021-12-19 18:39:27,768 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 18:39:27,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 18:39:27,769 INFO L158 Benchmark]: Toolchain (without parser) took 7965.92ms. Allocated memory was 98.6MB in the beginning and 155.2MB in the end (delta: 56.6MB). Free memory was 65.6MB in the beginning and 92.2MB in the end (delta: -26.5MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2021-12-19 18:39:27,769 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 70.7MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:39:27,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.86ms. Allocated memory is still 98.6MB. Free memory was 65.4MB in the beginning and 75.3MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 18:39:27,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.53ms. Allocated memory is still 98.6MB. Free memory was 75.0MB in the beginning and 73.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 18:39:27,769 INFO L158 Benchmark]: Boogie Preprocessor took 31.70ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 72.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 18:39:27,770 INFO L158 Benchmark]: RCFGBuilder took 202.41ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 63.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 18:39:27,770 INFO L158 Benchmark]: BuchiAutomizer took 7458.06ms. Allocated memory was 98.6MB in the beginning and 155.2MB in the end (delta: 56.6MB). Free memory was 62.8MB in the beginning and 92.2MB in the end (delta: -29.4MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2021-12-19 18:39:27,770 INFO L158 Benchmark]: Witness Printer took 2.38ms. Allocated memory is still 155.2MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:39:27,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 70.7MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.86ms. Allocated memory is still 98.6MB. Free memory was 65.4MB in the beginning and 75.3MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.53ms. Allocated memory is still 98.6MB. Free memory was 75.0MB in the beginning and 73.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.70ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 72.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 202.41ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 63.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7458.06ms. Allocated memory was 98.6MB in the beginning and 155.2MB in the end (delta: 56.6MB). Free memory was 62.8MB in the beginning and 92.2MB in the end (delta: -29.4MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Witness Printer took 2.38ms. Allocated memory is still 155.2MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (5 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One deterministic module has affine ranking function -1 * k + j and consists of 4 locations. One nondeterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * k + j and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 6.0s. Construction of modules took 0.1s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 85 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 101 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 290 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 280 mSDsluCounter, 409 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 359 IncrementalHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 227 mSDtfsCounter, 359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital31 mio100 ax100 hnf100 lsp114 ukn87 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf94 smp100 dnf235 smp83 tf104 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 73ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 18:39:27,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:28,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-19 18:39:28,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-19 18:39:28,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE