./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.13.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/b.13.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 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:17:42,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:17:42,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:17:42,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:17:42,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:17:42,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:17:42,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:17:42,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:17:42,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:17:42,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:17:42,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:17:42,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:17:42,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:17:42,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:17:42,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:17:42,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:17:42,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:17:42,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:17:42,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:17:42,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:17:42,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:17:42,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:17:42,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:17:42,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:17:42,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:17:42,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:17:42,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:17:42,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:17:42,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:17:42,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:17:42,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:17:42,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:17:42,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:17:42,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:17:42,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:17:42,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:17:42,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:17:42,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:17:42,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:17:42,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:17:42,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:17:42,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:17:42,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:17:42,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:17:42,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:17:42,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:17:42,409 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:17:42,410 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:17:42,410 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:17:42,410 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:17:42,411 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:17:42,411 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:17:42,411 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:17:42,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:17:42,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:17:42,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:17:42,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:17:42,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:17:42,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:17:42,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:17:42,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:17:42,413 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:17:42,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:17:42,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:17:42,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:17:42,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:17:42,415 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:17:42,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:17:42,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:17:42,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:17:42,415 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:17:42,417 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:17:42,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79bd658ed9c5ba1aa412e80cf651fd0f09a08950 [2020-10-26 04:17:42,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:17:42,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:17:42,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:17:42,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:17:42,804 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:17:42,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.13.c [2020-10-26 04:17:42,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3295252b9/aa75568e898e450e8be2bc55d7b3165f/FLAG84fd82542 [2020-10-26 04:17:43,463 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:17:43,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.13.c [2020-10-26 04:17:43,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3295252b9/aa75568e898e450e8be2bc55d7b3165f/FLAG84fd82542 [2020-10-26 04:17:43,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3295252b9/aa75568e898e450e8be2bc55d7b3165f [2020-10-26 04:17:43,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:17:43,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:17:43,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:17:43,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:17:43,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:17:43,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:17:43" (1/1) ... [2020-10-26 04:17:43,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec18757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:43, skipping insertion in model container [2020-10-26 04:17:43,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:17:43" (1/1) ... [2020-10-26 04:17:43,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:17:43,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:17:44,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:17:44,063 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:17:44,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:17:44,092 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:17:44,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44 WrapperNode [2020-10-26 04:17:44,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:17:44,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:17:44,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:17:44,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:17:44,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:17:44,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:17:44,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:17:44,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:17:44,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... [2020-10-26 04:17:44,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:17:44,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:17:44,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:17:44,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:17:44,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:44,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:17:44,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:17:44,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:17:44,406 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:17:44,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:17:44 BoogieIcfgContainer [2020-10-26 04:17:44,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:17:44,409 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:17:44,409 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:17:44,413 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:17:44,414 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:17:44,415 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:17:43" (1/3) ... [2020-10-26 04:17:44,416 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b67a47a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:17:44, skipping insertion in model container [2020-10-26 04:17:44,416 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:17:44,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:17:44" (2/3) ... [2020-10-26 04:17:44,417 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b67a47a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:17:44, skipping insertion in model container [2020-10-26 04:17:44,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:17:44,418 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:17:44" (3/3) ... [2020-10-26 04:17:44,419 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.13.c [2020-10-26 04:17:44,480 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:17:44,480 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:17:44,480 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:17:44,481 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:17:44,481 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:17:44,481 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:17:44,481 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:17:44,482 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:17:44,498 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:17:44,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:17:44,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:44,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:44,559 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:17:44,559 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:17:44,560 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:17:44,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:17:44,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:17:44,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:44,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:44,565 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:17:44,565 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:17:44,579 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 10#L16-2true [2020-10-26 04:17:44,582 INFO L796 eck$LassoCheckResult]: Loop: 10#L16-2true assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 8#L13true assume main_~x~0 > main_~z~0;main_~x~0 := main_~x~0 - 1; 10#L16-2true [2020-10-26 04:17:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:17:44,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:44,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298463864] [2020-10-26 04:17:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:44,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:44,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:44,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:44,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:44,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-26 04:17:44,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:44,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726274436] [2020-10-26 04:17:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:44,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:44,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:44,765 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:44,769 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-26 04:17:44,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:44,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302735885] [2020-10-26 04:17:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:44,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:44,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:44,812 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:44,900 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:44,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:44,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:44,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:44,901 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:17:44,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:44,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:44,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:44,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2020-10-26 04:17:44,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:44,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:44,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:44,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:44,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:45,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:45,065 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:45,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:17:45,085 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:17:45,086 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:45,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:17:45,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:17:45,119 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:45,151 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:45,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:17:45,201 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,399 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:17:45,401 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:45,402 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:45,402 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:45,402 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:45,402 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:17:45,402 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,402 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:45,403 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:45,403 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration1_Loop [2020-10-26 04:17:45,403 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:45,403 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:45,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:45,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:45,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:45,472 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:45,477 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:45,493 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:17:45,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:45,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:45,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:45,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,503 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:17:45,503 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:17:45,509 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,538 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:17:45,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:45,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:45,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:45,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:17:45,545 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:17:45,545 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:17:45,553 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,582 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:17:45,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:45,584 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:17:45,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:45,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:45,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:17:45,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:17:45,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:17:45,594 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:17:45,609 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-26 04:17:45,610 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:45,618 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:17:45,618 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:17:45,618 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:17:45,619 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-10-26 04:17:45,643 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:17:45,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:45,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:17:45,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:45,696 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:17:45,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:17:45,716 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:17:45,717 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-10-26 04:17:45,808 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2020-10-26 04:17:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:17:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:17:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-10-26 04:17:45,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-26 04:17:45,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:45,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-26 04:17:45,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:45,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-26 04:17:45,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:45,820 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2020-10-26 04:17:45,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:17:45,832 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2020-10-26 04:17:45,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-26 04:17:45,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-26 04:17:45,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-10-26 04:17:45,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:17:45,835 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-10-26 04:17:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-10-26 04:17:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-10-26 04:17:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 04:17:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-10-26 04:17:45,866 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-10-26 04:17:45,866 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-10-26 04:17:45,866 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:17:45,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2020-10-26 04:17:45,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:17:45,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:45,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:45,868 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:17:45,868 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:17:45,869 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 64#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2020-10-26 04:17:45,869 INFO L796 eck$LassoCheckResult]: Loop: 69#L13 assume !(main_~x~0 > main_~z~0); 65#L16 assume main_~y~0 > main_~z~0;main_~y~0 := main_~y~0 - 1; 66#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 69#L13 [2020-10-26 04:17:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:45,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-26 04:17:45,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:45,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610902964] [2020-10-26 04:17:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:45,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:45,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:45,912 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:45,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2020-10-26 04:17:45,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:45,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636974573] [2020-10-26 04:17:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:45,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:45,942 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:45,944 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2020-10-26 04:17:45,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:45,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408837368] [2020-10-26 04:17:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:45,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:45,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:45,986 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:46,031 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:46,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:46,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:46,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:46,032 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:17:46,032 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:46,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:46,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:46,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2020-10-26 04:17:46,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:46,033 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:46,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:46,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:46,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:46,160 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:46,160 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:46,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:46,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:17:46,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:17:46,176 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:46,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:46,214 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:46,218 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:17:46,219 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: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:46,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:17:46,267 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:46,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:17:46,311 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:46,809 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:17:46,811 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:17:46,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:17:46,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:17:46,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:17:46,812 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:17:46,812 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:46,812 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:17:46,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:17:46,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.13.c_Iteration2_Loop [2020-10-26 04:17:46,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:17:46,812 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:17:46,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:46,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:46,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:17:46,905 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:17:46,906 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:46,918 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:17:46,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:46,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:46,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:46,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:17:46,923 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:17:46,923 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:17:46,928 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:46,961 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:17:46,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:17:46,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:17:46,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:17:46,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:17:46,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:17:46,967 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:17:46,967 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:46,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:17:46,975 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:17:46,975 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:17:46,982 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:17:46,982 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:17:46,982 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:17:46,982 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:17:47,012 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:17:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:47,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:17:47,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:47,046 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:17:47,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:17:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:17:47,134 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 04:17:47,134 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-10-26 04:17:47,172 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2020-10-26 04:17:47,172 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 [2020-10-26 04:17:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:17:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-10-26 04:17:47,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2020-10-26 04:17:47,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:47,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-26 04:17:47,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:47,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2020-10-26 04:17:47,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:17:47,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2020-10-26 04:17:47,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:17:47,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2020-10-26 04:17:47,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-26 04:17:47,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-26 04:17:47,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2020-10-26 04:17:47,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:17:47,180 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-10-26 04:17:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2020-10-26 04:17:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-10-26 04:17:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-26 04:17:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2020-10-26 04:17:47,184 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-10-26 04:17:47,184 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-10-26 04:17:47,184 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:17:47,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2020-10-26 04:17:47,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:17:47,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:17:47,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:17:47,186 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 04:17:47,186 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:17:47,186 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 148#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 163#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2020-10-26 04:17:47,187 INFO L796 eck$LassoCheckResult]: Loop: 149#L16 assume !(main_~y~0 > main_~z~0); 150#L16-2 assume !!(main_~x~0 > main_~z~0 || main_~y~0 > main_~z~0); 157#L13 assume !(main_~x~0 > main_~z~0); 149#L16 [2020-10-26 04:17:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:47,187 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-26 04:17:47,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:47,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598793119] [2020-10-26 04:17:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:47,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:17:47,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:17:47,199 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:17:47,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:17:47,200 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2020-10-26 04:17:47,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:17:47,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790391385] [2020-10-26 04:17:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:17:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:17:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:17:47,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790391385] [2020-10-26 04:17:47,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:17:47,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:17:47,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813902241] [2020-10-26 04:17:47,250 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:17:47,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:17:47,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:17:47,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:17:47,254 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-26 04:17:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:17:47,288 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-10-26 04:17:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:17:47,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2020-10-26 04:17:47,290 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:17:47,290 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2020-10-26 04:17:47,290 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:17:47,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:17:47,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:17:47,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:17:47,290 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:17:47,290 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:17:47,290 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:17:47,291 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:17:47,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:17:47,291 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:17:47,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:17:47,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:17:47 BoogieIcfgContainer [2020-10-26 04:17:47,297 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:17:47,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:17:47,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:17:47,298 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:17:47,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:17:44" (3/4) ... [2020-10-26 04:17:47,302 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:17:47,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:17:47,304 INFO L168 Benchmark]: Toolchain (without parser) took 3449.49 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 27.8 MB in the beginning and 38.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:47,305 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:47,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.78 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 30.0 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:47,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.62 ms. Allocated memory is still 50.3 MB. Free memory was 30.0 MB in the beginning and 28.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:47,307 INFO L168 Benchmark]: Boogie Preprocessor took 19.66 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 27.8 MB in the end (delta: 849.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:47,308 INFO L168 Benchmark]: RCFGBuilder took 258.94 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 43.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:47,309 INFO L168 Benchmark]: BuchiAutomizer took 2888.38 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.7 MB in the beginning and 39.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:17:47,310 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 73.4 MB. Free memory was 39.0 MB in the beginning and 38.6 MB in the end (delta: 444.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:17:47,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.78 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 30.0 MB in the end (delta: -2.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.62 ms. Allocated memory is still 50.3 MB. Free memory was 30.0 MB in the beginning and 28.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.66 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 27.8 MB in the end (delta: 849.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 258.94 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 43.7 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2888.38 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.7 MB in the beginning and 39.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.18 ms. Allocated memory is still 73.4 MB. Free memory was 39.0 MB in the beginning and 38.6 MB in the end (delta: 444.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...