./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.15.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/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.15.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/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 28b8f223b97939bdb3ffe1e6bb25bd5d633f35c4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:11,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:11,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:11,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:11,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:11,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:11,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:11,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:11,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:11,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:11,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:11,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:11,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:11,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:11,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:11,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:11,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:11,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:11,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:11,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:11,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:11,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:11,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:11,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:11,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:11,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:11,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:11,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:11,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:11,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:11,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:11,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:11,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:11,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:11,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:11,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:11,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:11,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:11,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:11,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:11,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:11,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:56:11,141 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:11,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:11,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:11,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:11,148 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:11,148 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:56:11,148 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:56:11,148 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:56:11,148 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:56:11,149 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:56:11,149 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:56:11,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:11,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:11,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:11,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:11,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:56:11,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:56:11,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:56:11,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:11,150 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:56:11,150 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:11,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:56:11,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:11,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:11,151 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:56:11,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:11,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:11,151 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:56:11,152 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:56:11,152 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/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/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 -> 28b8f223b97939bdb3ffe1e6bb25bd5d633f35c4 [2019-10-22 08:56:11,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:11,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:11,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:11,207 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:11,208 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:11,208 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.15.c [2019-10-22 08:56:11,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/data/2baa6699b/bc85ae6233864141a0a39c6daff1776d/FLAG933bb2728 [2019-10-22 08:56:11,659 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:11,659 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/sv-benchmarks/c/termination-restricted-15/b.15.c [2019-10-22 08:56:11,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/data/2baa6699b/bc85ae6233864141a0a39c6daff1776d/FLAG933bb2728 [2019-10-22 08:56:12,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/bin/uautomizer/data/2baa6699b/bc85ae6233864141a0a39c6daff1776d [2019-10-22 08:56:12,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:12,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:12,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:12,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:12,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:12,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7865086a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12, skipping insertion in model container [2019-10-22 08:56:12,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,098 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:12,111 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:12,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:12,237 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:12,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:12,315 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:12,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12 WrapperNode [2019-10-22 08:56:12,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:12,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:12,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:12,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:12,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:12,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:12,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:12,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:12,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... [2019-10-22 08:56:12,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:12,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:12,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:12,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:12,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/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 [2019-10-22 08:56:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:12,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:12,519 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:12,519 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:56:12,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:12 BoogieIcfgContainer [2019-10-22 08:56:12,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:12,521 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:56:12,521 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:56:12,524 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:56:12,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:12,525 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:56:12" (1/3) ... [2019-10-22 08:56:12,526 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48d1fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:12, skipping insertion in model container [2019-10-22 08:56:12,526 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:12,526 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:12" (2/3) ... [2019-10-22 08:56:12,526 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48d1fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:12, skipping insertion in model container [2019-10-22 08:56:12,527 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:12,527 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:12" (3/3) ... [2019-10-22 08:56:12,528 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.15.c [2019-10-22 08:56:12,567 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:56:12,567 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:56:12,567 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:56:12,567 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:12,567 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:12,567 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:56:12,567 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:12,568 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:56:12,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-10-22 08:56:12,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:12,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:12,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:12,602 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:12,602 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:12,602 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:56:12,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-10-22 08:56:12,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:12,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:12,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:12,603 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:12,603 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:12,608 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 3#L13-3true [2019-10-22 08:56:12,609 INFO L793 eck$LassoCheckResult]: Loop: 3#L13-3true assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 6#L13-2true assume !(main_~y~0 > main_~z~0); 3#L13-3true [2019-10-22 08:56:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:12,613 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:56:12,619 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:12,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156695325] [2019-10-22 08:56:12,620 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,620 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,699 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:12,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1288, now seen corresponding path program 1 times [2019-10-22 08:56:12,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:12,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414987474] [2019-10-22 08:56:12,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:12,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414987474] [2019-10-22 08:56:12,759 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:12,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:56:12,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111039541] [2019-10-22 08:56:12,764 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:56:12,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:12,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:12,780 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-10-22 08:56:12,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:12,795 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-10-22 08:56:12,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:12,798 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-10-22 08:56:12,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:12,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 4 states and 5 transitions. [2019-10-22 08:56:12,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:56:12,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-10-22 08:56:12,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 5 transitions. [2019-10-22 08:56:12,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:12,804 INFO L688 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2019-10-22 08:56:12,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 5 transitions. [2019-10-22 08:56:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2019-10-22 08:56:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2019-10-22 08:56:12,836 INFO L711 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2019-10-22 08:56:12,836 INFO L591 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2019-10-22 08:56:12,836 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:56:12,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. [2019-10-22 08:56:12,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:12,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:12,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:12,837 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:12,837 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:12,838 INFO L791 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 24#L13-3 [2019-10-22 08:56:12,838 INFO L793 eck$LassoCheckResult]: Loop: 24#L13-3 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 25#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 27#L13-2 assume !(main_~y~0 > main_~z~0); 24#L13-3 [2019-10-22 08:56:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:12,838 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-10-22 08:56:12,838 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:12,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598727945] [2019-10-22 08:56:12,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,846 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:12,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:12,846 INFO L82 PathProgramCache]: Analyzing trace with hash 40007, now seen corresponding path program 1 times [2019-10-22 08:56:12,846 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:12,846 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851767204] [2019-10-22 08:56:12,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,847 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,858 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:12,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:12,859 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2019-10-22 08:56:12,859 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:12,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365822147] [2019-10-22 08:56:12,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:12,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:12,874 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:12,929 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:12,930 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:12,930 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:12,930 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:12,930 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:12,930 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:12,931 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:12,931 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:12,931 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2019-10-22 08:56:12,931 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:12,931 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:12,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:12,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:12,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:13,097 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:13,097 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/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) [2019-10-22 08:56:13,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:13,110 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 [2019-10-22 08:56:13,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:13,121 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/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/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) [2019-10-22 08:56:13,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:13,129 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 [2019-10-22 08:56:13,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:13,139 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/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/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) [2019-10-22 08:56:13,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:13,147 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d64918cf-e47a-4ff1-b134-902e0268090e/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) [2019-10-22 08:56:13,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:13,171 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:13,502 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:13,504 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:13,504 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:13,505 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:13,505 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:13,505 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:13,505 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:13,505 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:13,505 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:13,505 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2019-10-22 08:56:13,505 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:13,505 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:13,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:13,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:13,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:13,639 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:13,644 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:13,645 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 [2019-10-22 08:56:13,647 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:13,649 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:13,649 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:13,650 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:13,653 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:13,656 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:13,676 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:13,677 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 [2019-10-22 08:56:13,677 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:13,677 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:13,678 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:13,678 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:13,680 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:13,680 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:13,687 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:13,687 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 [2019-10-22 08:56:13,688 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:13,688 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:13,688 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:13,689 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:13,689 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:13,690 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:13,690 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:13,699 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:13,710 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:56:13,711 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:56:13,713 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:13,713 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:13,714 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:13,714 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-10-22 08:56:13,716 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:13,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:13,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:13,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:13,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:56:13,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:13,823 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 08:56:13,823 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2 Second operand 4 states. [2019-10-22 08:56:13,854 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 8 states and 9 transitions. Complement of second has 6 states. [2019-10-22 08:56:13,854 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 [2019-10-22 08:56:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-10-22 08:56:13,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 08:56:13,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:13,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:56:13,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:13,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 08:56:13,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:13,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-10-22 08:56:13,860 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:13,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2019-10-22 08:56:13,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:56:13,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:56:13,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:56:13,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:13,861 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:13,861 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:13,861 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:13,861 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:56:13,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:13,861 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:13,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:56:13,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:56:13 BoogieIcfgContainer [2019-10-22 08:56:13,867 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:56:13,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:13,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:13,868 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:13,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:12" (3/4) ... [2019-10-22 08:56:13,871 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:56:13,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:13,873 INFO L168 Benchmark]: Toolchain (without parser) took 1789.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 943.1 MB in the beginning and 1.0 GB in the end (delta: -66.2 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:13,874 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:13,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:13,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.52 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:13,875 INFO L168 Benchmark]: Boogie Preprocessor took 18.25 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. [2019-10-22 08:56:13,875 INFO L168 Benchmark]: RCFGBuilder took 152.45 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. [2019-10-22 08:56:13,876 INFO L168 Benchmark]: BuchiAutomizer took 1346.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:13,876 INFO L168 Benchmark]: Witness Printer took 3.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:13,878 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 231.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.52 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.25 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 152.45 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 1346.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 97.1 MB). Peak memory consumption was 97.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y + -1 * z and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 4 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 3 SDs, 0 SdLazy, 11 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax154 hnf97 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf91 smp85 dnf100 smp100 tf106 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 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...