./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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 2291f924dd9adb1923bbd2b3119647838e71c665 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:41:20,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:41:20,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:41:20,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:41:20,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:41:20,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:41:20,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:41:21,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:41:21,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:41:21,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:41:21,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:41:21,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:41:21,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:41:21,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:41:21,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:41:21,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:41:21,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:41:21,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:41:21,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:41:21,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:41:21,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:41:21,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:41:21,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:41:21,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:41:21,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:41:21,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:41:21,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:41:21,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:41:21,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:41:21,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:41:21,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:41:21,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:41:21,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:41:21,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:41:21,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:41:21,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:41:21,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:41:21,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:41:21,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:41:21,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:41:21,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:41:21,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 21:41:21,060 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:41:21,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:41:21,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:41:21,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:41:21,061 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:41:21,062 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 21:41:21,062 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 21:41:21,062 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 21:41:21,062 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 21:41:21,063 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 21:41:21,063 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 21:41:21,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:41:21,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:41:21,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:41:21,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:41:21,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 21:41:21,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 21:41:21,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 21:41:21,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:41:21,065 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 21:41:21,065 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:41:21,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 21:41:21,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:41:21,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:41:21,066 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 21:41:21,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:41:21,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:41:21,067 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 21:41:21,068 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 21:41:21,068 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_232d7a70-f542-4471-a275-bc6a4684a364/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 -> 2291f924dd9adb1923bbd2b3119647838e71c665 [2019-11-15 21:41:21,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:41:21,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:41:21,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:41:21,113 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:41:21,113 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:41:21,114 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2019-11-15 21:41:21,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/data/535e39e34/0573bff1ac3948b4bc9419e00d979859/FLAG2eb11655e [2019-11-15 21:41:21,545 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:41:21,546 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2019-11-15 21:41:21,553 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/data/535e39e34/0573bff1ac3948b4bc9419e00d979859/FLAG2eb11655e [2019-11-15 21:41:21,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/bin/uautomizer/data/535e39e34/0573bff1ac3948b4bc9419e00d979859 [2019-11-15 21:41:21,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:41:21,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:41:21,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:41:21,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:41:21,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:41:21,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:41:21" (1/1) ... [2019-11-15 21:41:21,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7543783a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:21, skipping insertion in model container [2019-11-15 21:41:21,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:41:21" (1/1) ... [2019-11-15 21:41:21,947 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:41:21,964 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:41:22,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:41:22,166 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:41:22,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:41:22,275 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:41:22,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22 WrapperNode [2019-11-15 21:41:22,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:41:22,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:41:22,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:41:22,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:41:22,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:41:22,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:41:22,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:41:22,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:41:22,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... [2019-11-15 21:41:22,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:41:22,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:41:22,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:41:22,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:41:22,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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 [2019-11-15 21:41:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:41:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:41:22,571 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:41:22,572 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 21:41:22,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:22 BoogieIcfgContainer [2019-11-15 21:41:22,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:41:22,574 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 21:41:22,574 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 21:41:22,579 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 21:41:22,580 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:41:22,580 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 09:41:21" (1/3) ... [2019-11-15 21:41:22,582 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9eee017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:41:22, skipping insertion in model container [2019-11-15 21:41:22,583 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:41:22,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:41:22" (2/3) ... [2019-11-15 21:41:22,584 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9eee017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:41:22, skipping insertion in model container [2019-11-15 21:41:22,584 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:41:22,584 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:22" (3/3) ... [2019-11-15 21:41:22,586 INFO L371 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2019-11-15 21:41:22,652 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 21:41:22,652 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 21:41:22,652 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 21:41:22,652 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:41:22,653 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:41:22,653 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 21:41:22,653 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:41:22,653 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 21:41:22,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-15 21:41:22,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:41:22,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:41:22,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:41:22,702 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 21:41:22,702 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:41:22,703 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 21:41:22,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-15 21:41:22,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:41:22,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:41:22,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:41:22,705 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 21:41:22,705 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:41:22,713 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L20true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 3#L21true assume !!(main_~z~0 <= 1073741823); 7#L24-2true [2019-11-15 21:41:22,714 INFO L793 eck$LassoCheckResult]: Loop: 7#L24-2true assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 9#L24true assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 7#L24-2true [2019-11-15 21:41:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:22,720 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2019-11-15 21:41:22,729 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:22,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911176121] [2019-11-15 21:41:22,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:22,730 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:22,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:22,833 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:22,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 1 times [2019-11-15 21:41:22,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:22,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028783271] [2019-11-15 21:41:22,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:22,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:22,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:22,850 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:22,852 INFO L82 PathProgramCache]: Analyzing trace with hash 29742639, now seen corresponding path program 1 times [2019-11-15 21:41:22,852 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:22,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734046202] [2019-11-15 21:41:22,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:22,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:22,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:22,870 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:22,930 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:22,931 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:22,931 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:22,931 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:22,931 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:41:22,931 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:22,931 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:22,932 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:22,932 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2019-11-15 21:41:22,932 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:22,932 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:22,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:22,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:22,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:22,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,104 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:23,105 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:23,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:23,113 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,123 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:41:23,123 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_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:23,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:23,145 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 [2019-11-15 21:41:23,150 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:41:23,151 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_232d7a70-f542-4471-a275-bc6a4684a364/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 [2019-11-15 21:41:23,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:23,160 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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 [2019-11-15 21:41:23,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:41:23,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:41:23,193 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:41:23,195 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:23,195 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:23,196 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:23,196 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:23,196 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:41:23,196 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,196 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:23,196 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:23,197 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2019-11-15 21:41:23,197 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:23,197 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:23,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,340 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:23,345 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:41:23,347 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 [2019-11-15 21:41:23,351 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:23,352 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:23,352 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:23,352 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:23,357 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:41:23,358 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:41:23,372 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:41:23,372 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 [2019-11-15 21:41:23,374 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:23,375 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:23,375 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:23,375 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:23,378 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:41:23,378 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:41:23,388 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:41:23,389 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 [2019-11-15 21:41:23,390 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:23,390 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:41:23,390 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:23,391 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:23,391 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:23,392 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:41:23,392 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:41:23,400 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:41:23,405 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:41:23,405 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 21:41:23,408 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:41:23,408 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:41:23,408 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:41:23,409 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-15 21:41:23,412 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:41:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:23,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:41:23,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:23,481 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:41:23,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:23,513 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 [2019-11-15 21:41:23,515 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-15 21:41:23,568 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 8 states. [2019-11-15 21:41:23,569 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 [2019-11-15 21:41:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:41:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-11-15 21:41:23,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 21:41:23,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:23,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 21:41:23,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:23,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-15 21:41:23,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:23,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2019-11-15 21:41:23,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:41:23,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 13 transitions. [2019-11-15 21:41:23,585 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 21:41:23,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 21:41:23,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-15 21:41:23,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:41:23,586 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:41:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-15 21:41:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-15 21:41:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 21:41:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-15 21:41:23,617 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:41:23,617 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:41:23,617 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 21:41:23,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-15 21:41:23,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 21:41:23,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:41:23,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:41:23,619 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 21:41:23,619 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 21:41:23,619 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 85#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 82#L21 assume !!(main_~z~0 <= 1073741823); 83#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 91#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2019-11-15 21:41:23,620 INFO L793 eck$LassoCheckResult]: Loop: 86#L27 assume !!(main_~z~0 <= 1073741823); 87#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 88#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2019-11-15 21:41:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash 29742632, now seen corresponding path program 1 times [2019-11-15 21:41:23,620 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:23,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607061930] [2019-11-15 21:41:23,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:23,621 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:23,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:23,635 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:23,636 INFO L82 PathProgramCache]: Analyzing trace with hash 57342, now seen corresponding path program 1 times [2019-11-15 21:41:23,636 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:23,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390219935] [2019-11-15 21:41:23,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:23,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:23,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:23,646 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514487, now seen corresponding path program 1 times [2019-11-15 21:41:23,647 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:23,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714674993] [2019-11-15 21:41:23,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:23,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:23,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:23,665 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:23,700 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:23,700 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:23,700 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:23,700 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:23,700 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:41:23,701 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,701 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:23,701 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:23,701 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2019-11-15 21:41:23,701 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:23,701 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:23,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,802 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:23,803 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:23,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:23,816 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:41:23,824 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_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:23,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:23,845 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:41:23,856 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_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:23,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:23,877 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,886 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:41:23,886 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=389769356, ULTIMATE.start_main_~z~0=389769356} Honda state: {ULTIMATE.start_main_#t~nondet2=389769356, ULTIMATE.start_main_~z~0=389769356} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:23,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:23,907 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:41:23,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:41:23,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:41:23,960 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:23,960 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:23,961 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:23,961 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:23,961 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:41:23,961 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:23,961 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:23,961 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:23,961 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2019-11-15 21:41:23,961 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:23,961 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:23,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:23,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,103 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:24,103 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:41:24,104 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 [2019-11-15 21:41:24,105 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:24,105 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:24,105 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:24,105 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:24,107 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:41:24,107 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:41:24,115 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:41:24,116 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 [2019-11-15 21:41:24,117 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:24,118 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:24,118 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:24,118 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:24,125 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:41:24,125 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:41:24,138 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:41:24,138 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 [2019-11-15 21:41:24,139 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:24,139 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:41:24,139 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:24,139 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:24,140 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:24,140 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:41:24,140 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:41:24,143 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:41:24,143 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 [2019-11-15 21:41:24,144 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:24,144 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:41:24,144 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:24,144 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:24,144 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:24,145 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:41:24,145 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:41:24,158 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:41:24,164 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:41:24,164 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 21:41:24,165 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:41:24,165 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:41:24,165 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:41:24,165 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-15 21:41:24,166 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:41:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:24,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:41:24,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:24,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:41:24,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:24,220 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 [2019-11-15 21:41:24,220 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-15 21:41:24,248 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 15 states and 20 transitions. Complement of second has 6 states. [2019-11-15 21:41:24,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 21:41:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 21:41:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-15 21:41:24,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 21:41:24,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:24,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-15 21:41:24,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:24,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-15 21:41:24,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:24,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2019-11-15 21:41:24,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:41:24,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 20 transitions. [2019-11-15 21:41:24,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 21:41:24,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-15 21:41:24,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2019-11-15 21:41:24,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:41:24,254 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-15 21:41:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2019-11-15 21:41:24,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2019-11-15 21:41:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-15 21:41:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2019-11-15 21:41:24,256 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-15 21:41:24,256 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-15 21:41:24,256 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 21:41:24,256 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2019-11-15 21:41:24,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:41:24,257 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:41:24,257 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:41:24,258 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-15 21:41:24,258 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:41:24,258 INFO L791 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 154#L21 assume !!(main_~z~0 <= 1073741823); 155#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 163#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L27 assume !!(main_~z~0 <= 1073741823); 160#L24-2 [2019-11-15 21:41:24,258 INFO L793 eck$LassoCheckResult]: Loop: 160#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 165#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 160#L24-2 [2019-11-15 21:41:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,258 INFO L82 PathProgramCache]: Analyzing trace with hash 922021620, now seen corresponding path program 2 times [2019-11-15 21:41:24,259 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:24,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865861548] [2019-11-15 21:41:24,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,259 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,282 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 2 times [2019-11-15 21:41:24,285 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:24,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12271112] [2019-11-15 21:41:24,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,303 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514494, now seen corresponding path program 1 times [2019-11-15 21:41:24,304 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:24,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895812761] [2019-11-15 21:41:24,305 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,305 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,325 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:24,356 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:24,357 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:24,357 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:24,357 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:24,357 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:41:24,357 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:24,358 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:24,358 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:24,358 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2019-11-15 21:41:24,358 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:24,358 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:24,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,463 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:24,464 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:24,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:24,473 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_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:24,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:41:24,497 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:24,506 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:41:24,509 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:24,509 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:24,509 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:24,509 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:24,509 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:41:24,509 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:24,509 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:24,510 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:24,510 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2019-11-15 21:41:24,510 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:24,510 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:24,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,613 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:24,613 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:41:24,613 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 [2019-11-15 21:41:24,614 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:24,614 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:41:24,615 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:24,615 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:24,615 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:24,616 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:41:24,616 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:41:24,619 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:41:24,623 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:41:24,623 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 21:41:24,624 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:41:24,624 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:41:24,624 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:41:24,624 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-15 21:41:24,625 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:41:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:24,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:41:24,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:24,676 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:41:24,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:24,691 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 [2019-11-15 21:41:24,691 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-15 21:41:24,706 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 20 states and 27 transitions. Complement of second has 5 states. [2019-11-15 21:41:24,708 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 [2019-11-15 21:41:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:41:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-15 21:41:24,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 21:41:24,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:24,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-15 21:41:24,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:24,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-15 21:41:24,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:24,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2019-11-15 21:41:24,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:41:24,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 21 transitions. [2019-11-15 21:41:24,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 21:41:24,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 21:41:24,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2019-11-15 21:41:24,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:41:24,714 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-15 21:41:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2019-11-15 21:41:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-15 21:41:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 21:41:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2019-11-15 21:41:24,717 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-15 21:41:24,717 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-15 21:41:24,717 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 21:41:24,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2019-11-15 21:41:24,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:41:24,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:41:24,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:41:24,719 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2019-11-15 21:41:24,719 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:41:24,719 INFO L791 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 235#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 232#L21 assume !!(main_~z~0 <= 1073741823); 233#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 242#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 236#L27 assume !!(main_~z~0 <= 1073741823); 237#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 246#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 238#L27 assume !!(main_~z~0 <= 1073741823); 239#L24-2 [2019-11-15 21:41:24,720 INFO L793 eck$LassoCheckResult]: Loop: 239#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 244#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 239#L24-2 [2019-11-15 21:41:24,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1630243461, now seen corresponding path program 3 times [2019-11-15 21:41:24,722 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:24,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689767183] [2019-11-15 21:41:24,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,746 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:24,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 3 times [2019-11-15 21:41:24,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:24,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231270744] [2019-11-15 21:41:24,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,753 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:24,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:24,754 INFO L82 PathProgramCache]: Analyzing trace with hash -999096369, now seen corresponding path program 2 times [2019-11-15 21:41:24,754 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:41:24,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268377482] [2019-11-15 21:41:24,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:41:24,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:41:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:41:24,771 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:41:24,804 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:24,804 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:24,805 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:24,805 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:24,805 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:41:24,805 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:24,805 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:24,805 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:24,805 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2019-11-15 21:41:24,806 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:24,806 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:24,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:24,899 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:24,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:24,909 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:24,915 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:41:24,915 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:24,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:41:24,935 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_232d7a70-f542-4471-a275-bc6a4684a364/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) [2019-11-15 21:41:24,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:41:24,959 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:24,970 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:41:24,972 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:41:24,973 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:41:24,973 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:41:24,973 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:41:24,973 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:41:24,973 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:41:24,973 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:41:24,974 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:41:24,974 INFO L131 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2019-11-15 21:41:24,974 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:41:24,974 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:41:24,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:24,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:25,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:41:25,082 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:41:25,082 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:41:25,083 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 [2019-11-15 21:41:25,084 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:41:25,084 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:41:25,084 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:41:25,084 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:41:25,084 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:41:25,085 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:41:25,085 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:41:25,094 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:41:25,096 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:41:25,099 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 21:41:25,099 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:41:25,100 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:41:25,100 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:41:25,100 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-15 21:41:25,101 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:41:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:25,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:41:25,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:25,141 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:41:25,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:25,180 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 [2019-11-15 21:41:25,180 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-15 21:41:25,201 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2019-11-15 21:41:25,204 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 [2019-11-15 21:41:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:41:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-15 21:41:25,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-15 21:41:25,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:25,205 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 21:41:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:25,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:41:25,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:25,243 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:41:25,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:25,258 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:41:25,258 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-15 21:41:25,276 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2019-11-15 21:41:25,277 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 [2019-11-15 21:41:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:41:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-15 21:41:25,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-15 21:41:25,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:25,278 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 21:41:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:41:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:25,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:41:25,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:41:25,320 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:41:25,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:41:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:41:25,334 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:41:25,334 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-15 21:41:25,352 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 4 states. [2019-11-15 21:41:25,353 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 [2019-11-15 21:41:25,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:41:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-15 21:41:25,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-15 21:41:25,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:25,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2019-11-15 21:41:25,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:25,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-15 21:41:25,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:41:25,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-11-15 21:41:25,357 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 21:41:25,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-11-15 21:41:25,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 21:41:25,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 21:41:25,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 21:41:25,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:41:25,358 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:41:25,358 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:41:25,358 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:41:25,358 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 21:41:25,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:41:25,358 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 21:41:25,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 21:41:25,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 09:41:25 BoogieIcfgContainer [2019-11-15 21:41:25,370 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 21:41:25,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:41:25,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:41:25,371 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:41:25,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:41:22" (3/4) ... [2019-11-15 21:41:25,379 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:41:25,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:41:25,382 INFO L168 Benchmark]: Toolchain (without parser) took 3454.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:41:25,383 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:41:25,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:25,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.57 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. [2019-11-15 21:41:25,385 INFO L168 Benchmark]: Boogie Preprocessor took 19.79 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. [2019-11-15 21:41:25,386 INFO L168 Benchmark]: RCFGBuilder took 240.87 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:25,387 INFO L168 Benchmark]: BuchiAutomizer took 2796.82 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: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. [2019-11-15 21:41:25,387 INFO L168 Benchmark]: Witness Printer took 8.90 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. [2019-11-15 21:41:25,390 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 348.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 946.5 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.57 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 19.79 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 240.87 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2796.82 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: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. * Witness Printer took 8.90 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * z + 1 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 8 SDs, 0 SdLazy, 34 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...