./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer --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 c3e40038ef85c6e1a2de0a898912241a10300c47 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:36:16,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:36:16,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:36:16,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:36:16,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:36:16,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:36:16,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:36:16,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:36:16,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:36:16,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:36:16,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:36:16,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:36:16,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:36:16,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:36:16,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:36:16,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:36:16,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:36:16,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:36:16,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:36:16,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:36:16,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:36:16,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:36:16,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:36:16,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:36:16,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:36:16,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:36:16,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:36:16,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:36:16,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:36:16,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:36:16,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:36:16,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:36:16,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:36:16,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:36:16,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:36:16,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:36:16,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:36:16,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:36:16,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:36:16,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:36:16,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:36:16,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 10:36:16,481 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:36:16,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:36:16,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:36:16,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:36:16,483 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:36:16,484 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 10:36:16,484 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 10:36:16,484 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 10:36:16,484 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 10:36:16,485 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 10:36:16,485 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 10:36:16,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:36:16,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:36:16,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:36:16,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:36:16,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 10:36:16,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 10:36:16,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 10:36:16,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:36:16,487 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 10:36:16,488 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:36:16,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 10:36:16,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:36:16,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:36:16,489 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 10:36:16,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:36:16,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:36:16,490 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 10:36:16,491 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 10:36:16,491 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer 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 -> c3e40038ef85c6e1a2de0a898912241a10300c47 [2019-11-20 10:36:16,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:36:16,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:36:16,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:36:16,744 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:36:16,745 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:36:16,746 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.02.c [2019-11-20 10:36:16,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/data/966edc122/f36d8e6644e046adb48a3e0e680caa68/FLAG1fce0434e [2019-11-20 10:36:17,374 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:36:17,375 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/sv-benchmarks/c/termination-restricted-15/c.02.c [2019-11-20 10:36:17,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/data/966edc122/f36d8e6644e046adb48a3e0e680caa68/FLAG1fce0434e [2019-11-20 10:36:17,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/data/966edc122/f36d8e6644e046adb48a3e0e680caa68 [2019-11-20 10:36:17,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:36:17,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:36:17,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:36:17,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:36:17,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:36:17,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:17" (1/1) ... [2019-11-20 10:36:17,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b8c948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:17, skipping insertion in model container [2019-11-20 10:36:17,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:36:17" (1/1) ... [2019-11-20 10:36:17,700 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:36:17,721 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:36:17,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:36:17,890 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:36:17,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:36:17,992 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:36:18,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18 WrapperNode [2019-11-20 10:36:18,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:36:18,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:36:18,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:36:18,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:36:18,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:36:18,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:36:18,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:36:18,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:36:18,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... [2019-11-20 10:36:18,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:36:18,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:36:18,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:36:18,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:36:18,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/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 [2019-11-20 10:36:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:36:18,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:36:18,363 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:36:18,363 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 10:36:18,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:18 BoogieIcfgContainer [2019-11-20 10:36:18,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:36:18,365 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 10:36:18,366 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 10:36:18,370 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 10:36:18,371 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:36:18,371 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:36:17" (1/3) ... [2019-11-20 10:36:18,373 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35e113a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:36:18, skipping insertion in model container [2019-11-20 10:36:18,373 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:36:18,374 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:36:18" (2/3) ... [2019-11-20 10:36:18,374 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35e113a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:36:18, skipping insertion in model container [2019-11-20 10:36:18,374 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:36:18,375 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:18" (3/3) ... [2019-11-20 10:36:18,376 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.02.c [2019-11-20 10:36:18,435 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 10:36:18,435 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 10:36:18,436 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 10:36:18,436 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:36:18,436 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:36:18,436 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 10:36:18,437 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:36:18,437 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 10:36:18,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 10:36:18,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:36:18,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:36:18,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:36:18,527 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:36:18,527 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:36:18,528 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 10:36:18,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 10:36:18,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:36:18,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:36:18,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:36:18,545 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:36:18,545 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:36:18,555 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 9#L10-2true [2019-11-20 10:36:18,555 INFO L796 eck$LassoCheckResult]: Loop: 9#L10-2true assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 5#L13-2true assume !(main_~x~0 > main_~y~0); 3#L13-3true main_~x~0 := main_~x~0 - 2; 9#L10-2true [2019-11-20 10:36:18,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:18,562 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 10:36:18,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:18,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909474890] [2019-11-20 10:36:18,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:18,709 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:36:18,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:18,711 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-20 10:36:18,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:18,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152345576] [2019-11-20 10:36:18,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:18,755 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:36:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-20 10:36:18,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:18,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774161538] [2019-11-20 10:36:18,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:18,793 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:36:18,932 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:36:18,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:36:18,933 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:36:18,933 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:36:18,933 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:36:18,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:18,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:36:18,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:36:18,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2019-11-20 10:36:18,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:36:18,935 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:36:18,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:18,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:18,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:19,119 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:36:19,120 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/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 [2019-11-20 10:36:19,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:19,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:36:19,140 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:36:19,141 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 /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:19,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:19,158 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:19,164 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:36:19,164 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 /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/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 [2019-11-20 10:36:19,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:19,171 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:19,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:36:19,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:36:19,525 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:36:19,527 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:36:19,528 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:36:19,528 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:36:19,528 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:36:19,528 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:36:19,528 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:19,528 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:36:19,528 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:36:19,528 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2019-11-20 10:36:19,529 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:36:19,529 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:36:19,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:19,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:19,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:19,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:36:19,715 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:19,721 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 [2019-11-20 10:36:19,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:36:19,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:36:19,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:36:19,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:36:19,730 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:36:19,731 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:36:19,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/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 [2019-11-20 10:36:19,750 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 [2019-11-20 10:36:19,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:36:19,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:36:19,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:36:19,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:36:19,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:36:19,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:36:19,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:36:19,772 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:36:19,784 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:36:19,785 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:19,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:36:19,798 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:36:19,798 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:36:19,799 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-20 10:36:19,805 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:19,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:36:19,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:19,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 10:36:19,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:19,941 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 10:36:19,943 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-20 10:36:20,004 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-11-20 10:36:20,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:36:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:36:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-20 10:36:20,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-20 10:36:20,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:20,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 10:36:20,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:20,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-20 10:36:20,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:20,012 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-11-20 10:36:20,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 10:36:20,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-20 10:36:20,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 10:36:20,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-20 10:36:20,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-20 10:36:20,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:36:20,023 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 10:36:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-20 10:36:20,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-20 10:36:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 10:36:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-11-20 10:36:20,054 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-20 10:36:20,055 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-20 10:36:20,055 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 10:36:20,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-11-20 10:36:20,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 10:36:20,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:36:20,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:36:20,056 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 10:36:20,056 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 10:36:20,057 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 73#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 74#L13-2 [2019-11-20 10:36:20,057 INFO L796 eck$LassoCheckResult]: Loop: 74#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 74#L13-2 [2019-11-20 10:36:20,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:20,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 10:36:20,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:20,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503789186] [2019-11-20 10:36:20,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:36:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-20 10:36:20,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:20,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591892044] [2019-11-20 10:36:20,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,077 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:36:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:20,078 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-20 10:36:20,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:20,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958961235] [2019-11-20 10:36:20,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,094 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:36:20,140 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:36:20,141 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:36:20,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:36:20,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:36:20,141 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:36:20,141 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,141 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:36:20,142 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:36:20,142 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2019-11-20 10:36:20,142 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:36:20,142 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:36:20,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,213 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:36:20,213 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/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 [2019-11-20 10:36:20,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:20,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:36:20,234 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:36:20,235 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 /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:20,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:20,252 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:36:20,260 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 /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:20,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:20,284 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:36:20,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:36:20,471 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:36:20,473 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:36:20,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:36:20,473 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:36:20,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:36:20,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:36:20,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:36:20,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:36:20,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2019-11-20 10:36:20,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:36:20,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:36:20,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,567 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:36:20,567 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,573 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 [2019-11-20 10:36:20,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:36:20,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:36:20,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:36:20,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:36:20,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:36:20,580 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:36:20,592 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:20,605 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 [2019-11-20 10:36:20,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:36:20,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:36:20,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:36:20,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:36:20,611 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:36:20,611 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,620 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,628 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 [2019-11-20 10:36:20,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:36:20,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:36:20,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:36:20,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:36:20,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:36:20,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:36:20,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:36:20,642 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:36:20,646 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:36:20,646 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,656 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:36:20,656 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:36:20,656 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:36:20,657 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:36:20,660 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:36:20,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:20,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:36:20,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:20,705 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:36:20,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:20,706 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 [2019-11-20 10:36:20,707 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-20 10:36:20,727 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2019-11-20 10:36:20,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:36:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 10:36:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 10:36:20,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-20 10:36:20,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:20,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-20 10:36:20,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:20,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 10:36:20,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:20,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-11-20 10:36:20,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 10:36:20,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-11-20 10:36:20,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 10:36:20,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 10:36:20,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-20 10:36:20,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:36:20,733 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-20 10:36:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-20 10:36:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-20 10:36:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 10:36:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-20 10:36:20,735 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-20 10:36:20,735 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-20 10:36:20,735 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 10:36:20,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-20 10:36:20,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 10:36:20,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:36:20,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:36:20,736 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-20 10:36:20,736 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 10:36:20,737 INFO L794 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 121#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 123#L13-2 assume !(main_~x~0 > main_~y~0); 118#L13-3 main_~x~0 := main_~x~0 - 2; 119#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 122#L13-2 [2019-11-20 10:36:20,737 INFO L796 eck$LassoCheckResult]: Loop: 122#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 122#L13-2 [2019-11-20 10:36:20,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:20,737 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-11-20 10:36:20,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:20,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836535858] [2019-11-20 10:36:20,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:20,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836535858] [2019-11-20 10:36:20,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:36:20,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:36:20,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768019962] [2019-11-20 10:36:20,837 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 10:36:20,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:20,838 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-20 10:36:20,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:36:20,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224669398] [2019-11-20 10:36:20,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:36:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:36:20,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:36:20,871 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:36:20,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:36:20,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:36:20,872 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:36:20,872 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:36:20,872 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,872 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:36:20,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:36:20,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2019-11-20 10:36:20,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:36:20,873 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:36:20,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:20,956 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:36:20,957 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:20,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:20,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:36:20,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:36:20,979 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:20,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:36:20,999 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:21,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:36:21,022 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:21,246 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:36:21,249 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:36:21,249 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:36:21,249 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:36:21,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:36:21,250 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:36:21,250 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:21,250 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:36:21,250 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:36:21,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2019-11-20 10:36:21,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:36:21,251 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:36:21,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:21,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:21,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:36:21,317 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:36:21,317 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:21,339 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 [2019-11-20 10:36:21,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:36:21,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:36:21,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:36:21,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:36:21,345 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:36:21,346 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:21,353 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:21,373 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 [2019-11-20 10:36:21,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:36:21,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:36:21,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:36:21,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:36:21,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:21,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:36:21,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:36:21,385 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:36:21,391 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 10:36:21,391 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e879af4-f9f1-4072-8d6d-5c5b178571c9/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:36:21,401 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:36:21,401 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:36:21,401 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:36:21,402 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:36:21,405 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:36:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:21,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:36:21,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:21,460 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:36:21,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:21,461 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 [2019-11-20 10:36:21,461 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 10:36:21,480 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-11-20 10:36:21,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:36:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 10:36:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 10:36:21,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 10:36:21,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:21,483 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:36:21,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:21,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:36:21,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:21,532 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:36:21,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:21,533 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 10:36:21,533 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 10:36:21,549 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-11-20 10:36:21,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:36:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 10:36:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 10:36:21,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 10:36:21,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:21,551 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:36:21,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:36:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:21,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:36:21,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:36:21,600 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:36:21,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:36:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:36:21,601 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 10:36:21,601 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 10:36:21,623 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2019-11-20 10:36:21,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:36:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 10:36:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 10:36:21,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 10:36:21,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:21,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-20 10:36:21,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:21,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 10:36:21,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:36:21,627 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-11-20 10:36:21,628 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:36:21,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-20 10:36:21,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 10:36:21,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 10:36:21,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 10:36:21,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 10:36:21,629 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:36:21,629 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:36:21,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:36:21,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 10:36:21,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:36:21,637 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-20 10:36:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:36:21,640 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 10:36:21,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 10:36:21,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 10:36:21,643 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:36:21,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 10:36:21,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 10:36:21,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 10:36:21,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 10:36:21,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 10:36:21,644 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:36:21,644 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:36:21,644 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:36:21,644 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 10:36:21,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:36:21,645 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:36:21,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 10:36:21,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:36:21 BoogieIcfgContainer [2019-11-20 10:36:21,657 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 10:36:21,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:36:21,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:36:21,658 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:36:21,658 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:18" (3/4) ... [2019-11-20 10:36:21,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 10:36:21,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:36:21,666 INFO L168 Benchmark]: Toolchain (without parser) took 3989.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 881.6 MB in the end (delta: 63.1 MB). Peak memory consumption was 195.8 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:21,672 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:36:21,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:21,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:36:21,674 INFO L168 Benchmark]: Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:36:21,675 INFO L168 Benchmark]: RCFGBuilder took 300.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:21,676 INFO L168 Benchmark]: BuchiAutomizer took 3291.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.6 MB in the end (delta: 227.4 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:36:21,676 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 1.2 GB. Free memory is still 881.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:36:21,688 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 300.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3291.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.6 MB in the end (delta: 227.4 MB). Peak memory consumption was 227.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.32 ms. Allocated memory is still 1.2 GB. Free memory is still 881.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf112 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...