./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 03:06:54,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 03:06:54,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 03:06:54,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 03:06:54,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 03:06:54,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 03:06:54,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 03:06:54,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 03:06:54,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 03:06:54,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 03:06:54,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 03:06:54,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 03:06:54,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 03:06:54,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 03:06:54,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 03:06:54,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 03:06:54,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 03:06:54,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 03:06:54,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 03:06:54,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 03:06:54,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 03:06:54,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 03:06:54,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 03:06:54,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 03:06:54,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 03:06:54,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 03:06:54,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 03:06:54,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 03:06:54,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 03:06:54,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 03:06:54,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 03:06:54,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 03:06:54,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 03:06:54,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 03:06:54,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 03:06:54,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 03:06:54,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 03:06:54,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 03:06:54,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 03:06:54,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 03:06:54,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 03:06:54,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-14 03:06:54,194 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 03:06:54,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 03:06:54,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 03:06:54,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 03:06:54,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 03:06:54,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 03:06:54,197 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 03:06:54,198 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-14 03:06:54,198 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-14 03:06:54,198 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-14 03:06:54,199 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-14 03:06:54,199 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-14 03:06:54,199 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-14 03:06:54,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 03:06:54,200 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 03:06:54,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 03:06:54,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 03:06:54,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-14 03:06:54,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-14 03:06:54,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-14 03:06:54,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 03:06:54,201 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-14 03:06:54,201 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 03:06:54,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-14 03:06:54,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 03:06:54,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 03:06:54,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 03:06:54,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 03:06:54,204 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-14 03:06:54,204 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2023-02-14 03:06:54,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 03:06:54,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 03:06:54,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 03:06:54,480 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 03:06:54,481 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 03:06:54,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2023-02-14 03:06:55,762 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 03:06:55,932 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 03:06:55,933 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2023-02-14 03:06:55,941 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68810831/6e33529b1baf4977bfe38c9aeeb5e474/FLAG96651fb30 [2023-02-14 03:06:55,957 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68810831/6e33529b1baf4977bfe38c9aeeb5e474 [2023-02-14 03:06:55,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 03:06:55,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 03:06:55,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 03:06:55,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 03:06:55,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 03:06:55,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 03:06:55" (1/1) ... [2023-02-14 03:06:55,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674fb729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:55, skipping insertion in model container [2023-02-14 03:06:55,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 03:06:55" (1/1) ... [2023-02-14 03:06:55,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 03:06:55,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 03:06:56,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 03:06:56,125 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 03:06:56,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 03:06:56,147 INFO L208 MainTranslator]: Completed translation [2023-02-14 03:06:56,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56 WrapperNode [2023-02-14 03:06:56,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 03:06:56,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 03:06:56,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 03:06:56,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 03:06:56,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,172 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-02-14 03:06:56,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 03:06:56,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 03:06:56,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 03:06:56,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 03:06:56,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,188 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 03:06:56,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 03:06:56,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 03:06:56,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 03:06:56,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (1/1) ... [2023-02-14 03:06:56,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:56,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:56,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:56,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-14 03:06:56,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 03:06:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 03:06:56,322 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 03:06:56,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 03:06:56,383 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 03:06:56,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 03:06:56,392 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 03:06:56,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:06:56 BoogieIcfgContainer [2023-02-14 03:06:56,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 03:06:56,396 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-14 03:06:56,396 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-14 03:06:56,399 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-14 03:06:56,400 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 03:06:56,400 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.02 03:06:55" (1/3) ... [2023-02-14 03:06:56,401 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8b2b715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 03:06:56, skipping insertion in model container [2023-02-14 03:06:56,401 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 03:06:56,401 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:06:56" (2/3) ... [2023-02-14 03:06:56,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8b2b715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 03:06:56, skipping insertion in model container [2023-02-14 03:06:56,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 03:06:56,402 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:06:56" (3/3) ... [2023-02-14 03:06:56,403 INFO L332 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2023-02-14 03:06:56,460 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-14 03:06:56,460 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-14 03:06:56,460 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-14 03:06:56,460 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-14 03:06:56,460 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-14 03:06:56,461 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-14 03:06:56,461 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-14 03:06:56,461 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-14 03:06:56,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:56,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:06:56,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:06:56,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:06:56,486 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 03:06:56,486 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:06:56,487 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-14 03:06:56,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:56,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:06:56,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:06:56,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:06:56,489 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 03:06:56,489 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:06:56,496 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 5#L18-2true [2023-02-14 03:06:56,497 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~y~0#1 >= 0); 9#L19true assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 2#L19-2true main_~x~0#1 := 1 + main_~x~0#1; 5#L18-2true [2023-02-14 03:06:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-14 03:06:56,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:56,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950839970] [2023-02-14 03:06:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:56,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:56,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:56,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:56,596 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2023-02-14 03:06:56,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:56,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063151699] [2023-02-14 03:06:56,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:56,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:56,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:56,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2023-02-14 03:06:56,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:56,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216358502] [2023-02-14 03:06:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 03:06:56,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216358502] [2023-02-14 03:06:56,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216358502] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 03:06:56,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 03:06:56,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 03:06:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099703987] [2023-02-14 03:06:56,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 03:06:56,768 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:56,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:56,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:56,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:56,781 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:06:56,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:56,781 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:56,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:56,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2023-02-14 03:06:56,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:56,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:56,827 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:56,856 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:56,860 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:56,873 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:56,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:56,980 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:06:56,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:56,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:56,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:56,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:56,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-14 03:06:57,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-14 03:06:57,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:57,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,073 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:57,073 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=51} Honda state: {ULTIMATE.start_main_~x~0#1=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [12, 8, 1] Nus: [1, 0] [2023-02-14 03:06:57,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-14 03:06:57,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:57,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:57,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 03:06:57,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-02-14 03:06:57,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-14 03:06:57,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:57,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:57,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 03:06:57,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-14 03:06:57,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:57,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-14 03:06:57,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:57,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,184 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:06:57,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,188 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:57,188 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:57,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:57,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:57,188 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:06:57,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:57,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:57,189 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2023-02-14 03:06:57,189 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:57,189 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:57,191 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,197 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,200 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,203 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,247 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:57,251 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:06:57,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-14 03:06:57,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:57,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:57,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:06:57,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:57,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:57,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:57,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:06:57,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:06:57,291 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:06:57,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-02-14 03:06:57,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-14 03:06:57,305 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:57,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:57,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:57,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:57,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:57,317 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:06:57,317 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:06:57,350 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:06:57,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,355 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-14 03:06:57,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:57,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:57,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:57,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:57,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:57,368 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:06:57,368 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:06:57,385 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:06:57,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,392 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-14 03:06:57,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:57,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:57,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:06:57,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:57,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:57,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:57,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:06:57,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:06:57,419 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:06:57,423 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 03:06:57,423 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-14 03:06:57,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-14 03:06:57,470 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:06:57,470 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:06:57,470 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:06:57,471 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-02-14 03:06:57,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,477 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:06:57,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:57,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:06:57,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:57,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:06:57,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:57,587 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-14 03:06:57,589 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:57,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 36 transitions. Complement of second has 8 states. [2023-02-14 03:06:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-14 03:06:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2023-02-14 03:06:57,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 3 letters. [2023-02-14 03:06:57,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:57,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-14 03:06:57,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:57,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 6 letters. [2023-02-14 03:06:57,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:57,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2023-02-14 03:06:57,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:06:57,635 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2023-02-14 03:06:57,635 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-14 03:06:57,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-02-14 03:06:57,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2023-02-14 03:06:57,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:06:57,637 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-02-14 03:06:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2023-02-14 03:06:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-02-14 03:06:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2023-02-14 03:06:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2023-02-14 03:06:57,657 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2023-02-14 03:06:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 03:06:57,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 03:06:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 03:06:57,660 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:57,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 03:06:57,668 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2023-02-14 03:06:57,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2023-02-14 03:06:57,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:06:57,669 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2023-02-14 03:06:57,669 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-14 03:06:57,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-14 03:06:57,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2023-02-14 03:06:57,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-14 03:06:57,670 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-14 03:06:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2023-02-14 03:06:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-14 03:06:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-02-14 03:06:57,672 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-14 03:06:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 03:06:57,673 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-14 03:06:57,673 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-14 03:06:57,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-02-14 03:06:57,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:06:57,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:06:57,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:06:57,674 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-14 03:06:57,674 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:06:57,674 INFO L748 eck$LassoCheckResult]: Stem: 105#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 108#L18-2 assume !!(main_~y~0#1 >= 0); 107#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 102#L19-2 [2023-02-14 03:06:57,675 INFO L750 eck$LassoCheckResult]: Loop: 102#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 103#L18-2 assume !!(main_~y~0#1 >= 0); 104#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 102#L19-2 [2023-02-14 03:06:57,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-02-14 03:06:57,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:57,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493307171] [2023-02-14 03:06:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:57,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:57,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:57,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2023-02-14 03:06:57,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:57,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277618889] [2023-02-14 03:06:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:57,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:57,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1810662097, now seen corresponding path program 1 times [2023-02-14 03:06:57,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:57,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012831908] [2023-02-14 03:06:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:57,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 03:06:57,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012831908] [2023-02-14 03:06:57,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012831908] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 03:06:57,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174380187] [2023-02-14 03:06:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:57,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 03:06:57,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,741 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 03:06:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:57,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 03:06:57,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:57,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 03:06:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:57,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174380187] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 03:06:57,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 03:06:57,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-14 03:06:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853171338] [2023-02-14 03:06:57,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 03:06:57,863 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:57,864 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:57,864 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:57,864 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:57,864 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:06:57,864 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,864 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:57,864 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:57,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2023-02-14 03:06:57,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:57,865 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:57,867 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,871 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,878 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,881 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:57,926 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:57,926 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:06:57,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,933 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-14 03:06:57,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:57,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:57,949 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 03:06:57,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:57,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,954 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-14 03:06:57,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:57,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:57,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-02-14 03:06:57,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:57,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:57,971 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:57,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:57,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:58,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-14 03:06:58,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:58,042 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [11, 1, 4] Nus: [0, 0] [2023-02-14 03:06:58,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,055 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-14 03:06:58,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:58,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:58,090 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:58,090 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 03:06:58,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,102 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:58,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:58,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-14 03:06:58,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,147 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:58,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:58,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-14 03:06:58,197 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:06:58,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,205 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:58,205 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:58,205 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:58,205 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:58,205 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:06:58,205 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,205 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:58,205 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:58,205 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2023-02-14 03:06:58,205 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:58,206 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:58,207 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,213 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,217 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,223 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,278 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:58,278 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:06:58,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,281 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-14 03:06:58,285 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:58,291 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:58,291 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:06:58,291 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:58,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:58,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:58,292 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:06:58,292 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:06:58,296 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:06:58,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,303 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-14 03:06:58,307 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:58,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:58,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:58,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:58,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:58,317 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:06:58,317 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:06:58,341 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:06:58,347 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 [2023-02-14 03:06:58,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,350 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-02-14 03:06:58,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:58,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:58,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:06:58,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:58,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:58,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:58,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:06:58,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:06:58,377 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:06:58,380 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 03:06:58,380 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-14 03:06:58,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,385 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-14 03:06:58,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:06:58,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:06:58,389 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:06:58,389 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-02-14 03:06:58,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,397 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:06:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:58,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:06:58,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:58,427 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:06:58,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:58,457 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 03:06:58,457 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:58,475 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 16 transitions. Complement of second has 7 states. [2023-02-14 03:06:58,476 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 [2023-02-14 03:06:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2023-02-14 03:06:58,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2023-02-14 03:06:58,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:58,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2023-02-14 03:06:58,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:58,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2023-02-14 03:06:58,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:58,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2023-02-14 03:06:58,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:06:58,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2023-02-14 03:06:58,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-14 03:06:58,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-14 03:06:58,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2023-02-14 03:06:58,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:06:58,480 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-02-14 03:06:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2023-02-14 03:06:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-14 03:06:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2023-02-14 03:06:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-02-14 03:06:58,481 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-02-14 03:06:58,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 03:06:58,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 03:06:58,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-14 03:06:58,482 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 03:06:58,505 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-02-14 03:06:58,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2023-02-14 03:06:58,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-14 03:06:58,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2023-02-14 03:06:58,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-02-14 03:06:58,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-02-14 03:06:58,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2023-02-14 03:06:58,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-14 03:06:58,509 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-02-14 03:06:58,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2023-02-14 03:06:58,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-02-14 03:06:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-02-14 03:06:58,513 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-02-14 03:06:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 03:06:58,514 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-02-14 03:06:58,516 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-14 03:06:58,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2023-02-14 03:06:58,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 03:06:58,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:06:58,517 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:06:58,518 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2023-02-14 03:06:58,518 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:06:58,518 INFO L748 eck$LassoCheckResult]: Stem: 242#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 243#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 240#L18-2 assume !!(main_~y~0#1 >= 0); 241#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 238#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 239#L18-2 assume !!(main_~y~0#1 >= 0); 253#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 252#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 251#L18-2 assume !!(main_~y~0#1 >= 0); 250#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 249#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 248#L18-2 assume !!(main_~y~0#1 >= 0); 247#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 245#L19-2 [2023-02-14 03:06:58,519 INFO L750 eck$LassoCheckResult]: Loop: 245#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 246#L18-2 assume !!(main_~y~0#1 >= 0); 244#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 245#L19-2 [2023-02-14 03:06:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1702507665, now seen corresponding path program 1 times [2023-02-14 03:06:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:58,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76616106] [2023-02-14 03:06:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:58,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:58,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2023-02-14 03:06:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076097171] [2023-02-14 03:06:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:58,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:58,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:58,574 INFO L85 PathProgramCache]: Analyzing trace with hash -137031896, now seen corresponding path program 2 times [2023-02-14 03:06:58,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:58,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588595839] [2023-02-14 03:06:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:58,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 03:06:58,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588595839] [2023-02-14 03:06:58,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588595839] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 03:06:58,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402299994] [2023-02-14 03:06:58,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 03:06:58,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 03:06:58,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,654 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-14 03:06:58,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 03:06:58,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 03:06:58,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 03:06:58,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:58,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 03:06:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:58,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402299994] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 03:06:58,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 03:06:58,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-14 03:06:58,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182564379] [2023-02-14 03:06:58,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 03:06:58,824 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:58,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:58,824 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:58,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:58,824 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:06:58,825 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,825 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:58,825 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:58,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2023-02-14 03:06:58,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:58,825 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:58,826 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,831 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,833 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,841 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:58,876 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:58,876 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:06:58,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,883 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-14 03:06:58,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:58,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:58,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,925 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:58,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-02-14 03:06:58,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:58,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:58,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:58,986 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [11, 1, 4] Nus: [0, 0] [2023-02-14 03:06:58,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:58,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:58,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:58,993 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:59,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:59,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:59,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-02-14 03:06:59,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:59,025 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 03:06:59,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:59,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,030 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) [2023-02-14 03:06:59,031 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 [2023-02-14 03:06:59,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:59,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:59,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:59,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,093 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) [2023-02-14 03:06:59,096 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 [2023-02-14 03:06:59,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:59,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:59,118 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:06:59,125 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 [2023-02-14 03:06:59,126 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:59,126 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:59,126 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:59,126 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:59,126 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:06:59,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:59,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:59,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2023-02-14 03:06:59,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:59,126 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:59,127 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,134 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,137 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,142 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,186 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:59,186 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:06:59,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,188 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) [2023-02-14 03:06:59,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:59,195 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 [2023-02-14 03:06:59,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:59,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:06:59,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:59,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:59,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:59,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:06:59,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:06:59,210 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:06:59,213 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 [2023-02-14 03:06:59,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,215 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) [2023-02-14 03:06:59,218 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 [2023-02-14 03:06:59,218 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:59,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:59,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:59,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:59,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:59,227 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 03:06:59,227 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 03:06:59,260 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:06:59,267 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 [2023-02-14 03:06:59,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,268 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) [2023-02-14 03:06:59,276 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:59,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:59,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:06:59,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:59,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:59,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:59,286 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 [2023-02-14 03:06:59,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:06:59,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:06:59,299 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:06:59,302 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 03:06:59,302 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-14 03:06:59,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,305 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) [2023-02-14 03:06:59,307 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 [2023-02-14 03:06:59,307 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:06:59,307 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:06:59,308 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:06:59,308 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-02-14 03:06:59,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-02-14 03:06:59,312 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:06:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:59,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:06:59,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:59,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:06:59,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:59,375 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 03:06:59,376 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,386 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 7 states. [2023-02-14 03:06:59,386 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 [2023-02-14 03:06:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2023-02-14 03:06:59,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2023-02-14 03:06:59,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:59,389 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 03:06:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:59,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:06:59,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:59,437 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:06:59,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:59,449 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 03:06:59,449 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 7 states. [2023-02-14 03:06:59,455 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 [2023-02-14 03:06:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2023-02-14 03:06:59,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2023-02-14 03:06:59,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:59,457 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 03:06:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:59,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:06:59,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:06:59,493 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:06:59,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:06:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:06:59,530 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 03:06:59,530 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,538 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 [2023-02-14 03:06:59,542 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 27 transitions. Complement of second has 6 states. [2023-02-14 03:06:59,542 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 [2023-02-14 03:06:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-02-14 03:06:59,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2023-02-14 03:06:59,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:59,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2023-02-14 03:06:59,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:59,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2023-02-14 03:06:59,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:06:59,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2023-02-14 03:06:59,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-14 03:06:59,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2023-02-14 03:06:59,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-02-14 03:06:59,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-02-14 03:06:59,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2023-02-14 03:06:59,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:06:59,547 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-14 03:06:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2023-02-14 03:06:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-02-14 03:06:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-14 03:06:59,548 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-14 03:06:59,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 03:06:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 03:06:59,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 03:06:59,550 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 03:06:59,582 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2023-02-14 03:06:59,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2023-02-14 03:06:59,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-14 03:06:59,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2023-02-14 03:06:59,584 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2023-02-14 03:06:59,584 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2023-02-14 03:06:59,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2023-02-14 03:06:59,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 03:06:59,585 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-02-14 03:06:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2023-02-14 03:06:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-02-14 03:06:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:06:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-02-14 03:06:59,587 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-02-14 03:06:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 03:06:59,588 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-02-14 03:06:59,589 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-14 03:06:59,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2023-02-14 03:06:59,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-14 03:06:59,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 03:06:59,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 03:06:59,590 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2023-02-14 03:06:59,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 03:06:59,591 INFO L748 eck$LassoCheckResult]: Stem: 670#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 671#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 673#L18-2 assume !!(main_~y~0#1 >= 0); 697#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 663#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 664#L18-2 assume !!(main_~y~0#1 >= 0); 668#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 672#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 696#L18-2 assume !!(main_~y~0#1 >= 0); 695#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 694#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 693#L18-2 assume !!(main_~y~0#1 >= 0); 692#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 691#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 690#L18-2 assume !!(main_~y~0#1 >= 0); 689#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 688#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 687#L18-2 assume !!(main_~y~0#1 >= 0); 686#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 685#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 684#L18-2 assume !!(main_~y~0#1 >= 0); 683#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 682#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 681#L18-2 assume !!(main_~y~0#1 >= 0); 680#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 679#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 678#L18-2 assume !!(main_~y~0#1 >= 0); 677#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 676#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2023-02-14 03:06:59,591 INFO L750 eck$LassoCheckResult]: Loop: 667#L18-2 assume !!(main_~y~0#1 >= 0); 675#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 674#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2023-02-14 03:06:59,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:59,591 INFO L85 PathProgramCache]: Analyzing trace with hash -191897876, now seen corresponding path program 2 times [2023-02-14 03:06:59,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:59,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081111320] [2023-02-14 03:06:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:59,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:59,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash 40814, now seen corresponding path program 1 times [2023-02-14 03:06:59,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:59,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433593061] [2023-02-14 03:06:59,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:59,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:59,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:06:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash -228141917, now seen corresponding path program 3 times [2023-02-14 03:06:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 03:06:59,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347680053] [2023-02-14 03:06:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 03:06:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 03:06:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:59,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 03:06:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 03:06:59,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 03:06:59,680 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:59,681 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:59,681 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:59,681 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:59,681 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 03:06:59,681 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,681 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:59,681 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:59,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2023-02-14 03:06:59,682 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:59,682 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:59,684 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,689 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,696 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,733 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:59,734 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 03:06:59,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,735 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) [2023-02-14 03:06:59,738 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 [2023-02-14 03:06:59,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:59,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:59,768 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 [2023-02-14 03:06:59,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,773 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) [2023-02-14 03:06:59,776 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 [2023-02-14 03:06:59,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:59,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:59,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 03:06:59,802 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [11, 1, 11] Nus: [0, 0] [2023-02-14 03:06:59,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-02-14 03:06:59,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,810 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) [2023-02-14 03:06:59,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 03:06:59,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:59,821 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 [2023-02-14 03:06:59,843 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 [2023-02-14 03:06:59,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,845 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:59,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-02-14 03:06:59,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 03:06:59,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 03:06:59,909 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 03:06:59,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-02-14 03:06:59,912 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 03:06:59,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 03:06:59,912 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 03:06:59,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 03:06:59,913 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 03:06:59,913 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,913 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 03:06:59,913 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 03:06:59,913 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2023-02-14 03:06:59,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 03:06:59,913 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 03:06:59,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,925 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,929 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,932 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 03:06:59,962 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 03:06:59,962 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 03:06:59,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:06:59,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:06:59,964 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:06:59,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:06:59,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:06:59,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:06:59,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:06:59,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:06:59,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:06:59,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:06:59,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:06:59,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-02-14 03:06:59,996 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 03:07:00,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-02-14 03:07:00,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:00,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:00,002 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:07:00,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-02-14 03:07:00,005 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 03:07:00,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 03:07:00,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 03:07:00,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 03:07:00,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 03:07:00,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 03:07:00,013 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 03:07:00,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 03:07:00,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 03:07:00,025 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 03:07:00,025 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-14 03:07:00,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 03:07:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 03:07:00,029 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 03:07:00,040 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 03:07:00,040 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 03:07:00,040 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 03:07:00,041 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 101 Supporting invariants [] [2023-02-14 03:07:00,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-02-14 03:07:00,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-02-14 03:07:00,044 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 03:07:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 03:07:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:00,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 03:07:00,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 03:07:00,113 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 03:07:00,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 03:07:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 03:07:00,131 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 03:07:00,131 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:07:00,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 65 transitions. Complement of second has 6 states. [2023-02-14 03:07:00,145 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 [2023-02-14 03:07:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 03:07:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-02-14 03:07:00,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2023-02-14 03:07:00,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:00,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2023-02-14 03:07:00,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:00,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2023-02-14 03:07:00,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 03:07:00,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2023-02-14 03:07:00,155 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 03:07:00,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2023-02-14 03:07:00,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-14 03:07:00,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-14 03:07:00,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-14 03:07:00,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-14 03:07:00,156 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 03:07:00,156 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 03:07:00,156 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 03:07:00,156 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-14 03:07:00,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-14 03:07:00,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 03:07:00,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-14 03:07:00,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.02 03:07:00 BoogieIcfgContainer [2023-02-14 03:07:00,162 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-14 03:07:00,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 03:07:00,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 03:07:00,163 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 03:07:00,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:06:56" (3/4) ... [2023-02-14 03:07:00,165 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-14 03:07:00,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 03:07:00,165 INFO L158 Benchmark]: Toolchain (without parser) took 4204.95ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 80.9MB in the beginning and 95.8MB in the end (delta: -14.9MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2023-02-14 03:07:00,166 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 03:07:00,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.82ms. Allocated memory is still 125.8MB. Free memory was 80.9MB in the beginning and 72.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 03:07:00,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.22ms. Allocated memory is still 125.8MB. Free memory was 71.5MB in the beginning and 70.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 03:07:00,166 INFO L158 Benchmark]: Boogie Preprocessor took 16.20ms. Allocated memory is still 125.8MB. Free memory was 70.4MB in the beginning and 69.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 03:07:00,167 INFO L158 Benchmark]: RCFGBuilder took 203.92ms. Allocated memory is still 125.8MB. Free memory was 69.4MB in the beginning and 61.0MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-14 03:07:00,167 INFO L158 Benchmark]: BuchiAutomizer took 3766.72ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 61.0MB in the beginning and 95.8MB in the end (delta: -34.8MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-02-14 03:07:00,167 INFO L158 Benchmark]: Witness Printer took 2.21ms. Allocated memory is still 167.8MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 03:07:00,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.82ms. Allocated memory is still 125.8MB. Free memory was 80.9MB in the beginning and 72.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.22ms. Allocated memory is still 125.8MB. Free memory was 71.5MB in the beginning and 70.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.20ms. Allocated memory is still 125.8MB. Free memory was 70.4MB in the beginning and 69.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.92ms. Allocated memory is still 125.8MB. Free memory was 69.4MB in the beginning and 61.0MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 3766.72ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 61.0MB in the beginning and 95.8MB in the end (delta: -34.8MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 2.21ms. Allocated memory is still 167.8MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function 101 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 46 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf94 smp100 dnf100 smp100 tf112 neg95 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-14 03:07:00,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-02-14 03:07:00,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-02-14 03:07:00,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-14 03:07:00,782 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