./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.12.c -s /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/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 f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:55:29,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:55:29,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:55:29,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:55:29,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:55:29,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:55:29,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:55:29,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:55:29,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:55:29,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:55:29,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:55:29,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:55:29,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:55:29,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:55:29,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:55:29,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:55:29,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:55:29,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:55:29,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:55:29,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:55:29,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:55:29,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:55:29,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:55:29,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:55:29,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:55:29,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:55:29,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:55:29,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:55:29,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:55:29,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:55:29,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:55:29,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:55:29,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:55:29,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:55:29,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:55:29,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:55:29,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:55:29,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:55:29,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:55:29,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:55:29,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:55:29,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:55:29,475 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:55:29,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:55:29,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:55:29,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:55:29,476 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:55:29,477 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:55:29,477 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:55:29,477 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:55:29,477 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:55:29,477 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:55:29,478 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:55:29,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:55:29,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:55:29,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:55:29,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:55:29,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:55:29,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:55:29,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:55:29,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:55:29,481 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:55:29,481 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:55:29,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:55:29,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:55:29,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:55:29,482 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:55:29,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:55:29,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:55:29,482 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:55:29,484 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:55:29,484 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_956b0d74-c098-482d-a452-1373b6baa0b2/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 -> f29b9a2e4c338e2b37ca8ba7d6a8b859a8519aff [2019-11-25 08:55:29,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:55:29,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:55:29,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:55:29,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:55:29,628 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:55:29,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.12.c [2019-11-25 08:55:29,677 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/data/beb25e6b2/41e08d4dcd474e388ce24a5b4927074a/FLAG947b727f9 [2019-11-25 08:55:30,067 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:55:30,068 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/sv-benchmarks/c/termination-restricted-15/b.12.c [2019-11-25 08:55:30,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/data/beb25e6b2/41e08d4dcd474e388ce24a5b4927074a/FLAG947b727f9 [2019-11-25 08:55:30,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/data/beb25e6b2/41e08d4dcd474e388ce24a5b4927074a [2019-11-25 08:55:30,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:55:30,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:55:30,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:30,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:55:30,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:55:30,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424cdaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30, skipping insertion in model container [2019-11-25 08:55:30,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:55:30,113 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:55:30,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:30,251 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:55:30,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:30,381 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:55:30,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30 WrapperNode [2019-11-25 08:55:30,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:30,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:30,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:55:30,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:55:30,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:30,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:55:30,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:55:30,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:55:30,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... [2019-11-25 08:55:30,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:55:30,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:55:30,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:55:30,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:55:30,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/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 [2019-11-25 08:55:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:55:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:55:30,603 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:55:30,603 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:55:30,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:30 BoogieIcfgContainer [2019-11-25 08:55:30,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:55:30,604 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:55:30,604 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:55:30,607 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:55:30,608 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:55:30,608 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:55:30" (1/3) ... [2019-11-25 08:55:30,609 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40fbfaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:55:30, skipping insertion in model container [2019-11-25 08:55:30,609 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:55:30,609 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:30" (2/3) ... [2019-11-25 08:55:30,610 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40fbfaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:55:30, skipping insertion in model container [2019-11-25 08:55:30,610 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:55:30,610 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:30" (3/3) ... [2019-11-25 08:55:30,611 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.12.c [2019-11-25 08:55:30,652 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:55:30,653 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:55:30,653 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:55:30,653 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:55:30,653 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:55:30,653 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:55:30,653 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:55:30,653 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:55:30,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:55:30,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:30,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:30,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:30,692 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:55:30,692 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:55:30,692 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:55:30,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:55:30,693 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:30,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:30,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:30,694 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:55:30,694 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:55:30,701 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2019-11-25 08:55:30,702 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~x~0 > 0 || main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2019-11-25 08:55:30,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:30,707 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:55:30,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:30,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034860963] [2019-11-25 08:55:30,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:30,805 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:30,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-25 08:55:30,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:30,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369233217] [2019-11-25 08:55:30,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:30,817 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:30,819 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-25 08:55:30,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:30,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402805442] [2019-11-25 08:55:30,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:30,830 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:30,947 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:30,948 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:30,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:30,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:30,949 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:55:30,949 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:30,949 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:30,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:30,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2019-11-25 08:55:30,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:30,951 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:30,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:30,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:30,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,051 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:31,052 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/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) [2019-11-25 08:55:31,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:31,059 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 [2019-11-25 08:55:31,068 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:31,068 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_956b0d74-c098-482d-a452-1373b6baa0b2/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:31,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:31,080 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:31,080 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_956b0d74-c098-482d-a452-1373b6baa0b2/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) [2019-11-25 08:55:31,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:31,098 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/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/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 [2019-11-25 08:55:31,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:55:31,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:31,126 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:55:31,131 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:31,131 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:31,131 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:31,131 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:31,131 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:55:31,131 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,131 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:31,131 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:31,131 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration1_Loop [2019-11-25 08:55:31,132 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:31,132 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:31,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,195 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:31,199 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/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) [2019-11-25 08:55:31,209 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 [2019-11-25 08:55:31,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:31,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:31,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:31,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:31,217 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:31,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:31,223 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,253 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 [2019-11-25 08:55:31,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:31,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:31,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:31,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:31,259 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:31,259 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,278 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/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) [2019-11-25 08:55:31,295 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 [2019-11-25 08:55:31,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:31,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:31,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:31,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:31,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:31,305 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:55:31,305 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,316 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:55:31,320 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:55:31,320 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,331 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:55:31,331 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:55:31,331 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:55:31,332 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:55:31,350 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:55:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:31,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:31,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:31,407 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:55:31,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:31,424 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:55:31,425 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-25 08:55:31,462 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2019-11-25 08:55:31,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:55:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:55:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:55:31,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-25 08:55:31,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:31,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-25 08:55:31,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:31,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:55:31,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:31,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2019-11-25 08:55:31,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:31,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2019-11-25 08:55:31,475 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-25 08:55:31,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-25 08:55:31,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-11-25 08:55:31,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:55:31,477 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-25 08:55:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-11-25 08:55:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-25 08:55:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:55:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-11-25 08:55:31,501 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:55:31,501 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:55:31,501 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:55:31,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-11-25 08:55:31,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:31,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:31,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:31,502 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:55:31,503 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:55:31,503 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2019-11-25 08:55:31,503 INFO L796 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 69#L12 [2019-11-25 08:55:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:31,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:55:31,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:31,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050915634] [2019-11-25 08:55:31,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:31,512 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:31,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-11-25 08:55:31,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:31,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980787611] [2019-11-25 08:55:31,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:31,522 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:31,525 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-11-25 08:55:31,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:31,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117767334] [2019-11-25 08:55:31,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:31,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:31,574 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:31,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:31,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:31,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:31,574 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:55:31,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:31,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:31,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2019-11-25 08:55:31,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:31,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:31,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,655 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:31,655 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:31,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:31,666 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:31,673 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_956b0d74-c098-482d-a452-1373b6baa0b2/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:31,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:31,683 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:55:31,684 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_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:55:31,696 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:55:31,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:55:31,753 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:55:31,755 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:55:31,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:55:31,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:55:31,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:55:31,755 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:55:31,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,755 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:55:31,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:55:31,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.12.c_Iteration2_Loop [2019-11-25 08:55:31,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:55:31,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:55:31,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:55:31,835 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:55:31,836 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/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) [2019-11-25 08:55:31,852 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 [2019-11-25 08:55:31,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:31,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:31,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:31,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:31,861 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:31,861 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,868 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,879 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 [2019-11-25 08:55:31,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:31,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:31,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:31,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:31,885 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:55:31,885 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:55:31,890 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:55:31,905 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 Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:55:31,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:55:31,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:55:31,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:55:31,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:55:31,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:55:31,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:55:31,910 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:55:31,913 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:55:31,913 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_956b0d74-c098-482d-a452-1373b6baa0b2/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:55:31,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:55:31,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:55:31,916 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:55:31,916 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:55:31,918 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:55:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:31,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:55:31,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:31,946 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:55:31,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:31,997 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 [2019-11-25 08:55:31,997 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-25 08:55:32,031 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2019-11-25 08:55:32,033 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 [2019-11-25 08:55:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:55:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-25 08:55:32,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-25 08:55:32,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:32,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-25 08:55:32,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:32,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-25 08:55:32,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:55:32,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-11-25 08:55:32,037 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:32,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2019-11-25 08:55:32,039 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:55:32,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:55:32,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-11-25 08:55:32,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:55:32,040 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-25 08:55:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-11-25 08:55:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-11-25 08:55:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:55:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-11-25 08:55:32,048 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-25 08:55:32,049 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-25 08:55:32,049 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:55:32,049 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-11-25 08:55:32,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:55:32,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:55:32,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:55:32,053 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:55:32,053 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:55:32,056 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2019-11-25 08:55:32,057 INFO L796 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(main_~x~0 > 0 || main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2019-11-25 08:55:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-25 08:55:32,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:32,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127403162] [2019-11-25 08:55:32,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:55:32,074 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:55:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:32,075 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-11-25 08:55:32,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:32,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178665804] [2019-11-25 08:55:32,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:32,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178665804] [2019-11-25 08:55:32,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:32,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:55:32,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704772751] [2019-11-25 08:55:32,117 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:55:32,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:32,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:55:32,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:55:32,126 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-25 08:55:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:32,156 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-11-25 08:55:32,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:55:32,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-11-25 08:55:32,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:55:32,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-25 08:55:32,157 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:55:32,157 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:55:32,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:55:32,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:55:32,157 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:32,157 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:32,158 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:32,158 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:55:32,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:55:32,158 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:55:32,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:55:32,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:55:32 BoogieIcfgContainer [2019-11-25 08:55:32,163 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:55:32,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:55:32,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:55:32,164 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:55:32,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:30" (3/4) ... [2019-11-25 08:55:32,167 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:55:32,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:55:32,169 INFO L168 Benchmark]: Toolchain (without parser) took 2084.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 951.5 MB in the beginning and 960.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 163.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:32,170 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:32,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 951.5 MB in the beginning and 1.2 GB in the end (delta: -215.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:32,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:32,171 INFO L168 Benchmark]: Boogie Preprocessor took 16.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:32,172 INFO L168 Benchmark]: RCFGBuilder took 174.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:32,172 INFO L168 Benchmark]: BuchiAutomizer took 1558.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.8 MB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:32,173 INFO L168 Benchmark]: Witness Printer took 4.05 ms. Allocated memory is still 1.2 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:32,176 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 951.5 MB in the beginning and 1.2 GB in the end (delta: -215.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 174.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1558.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.8 MB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.05 ms. Allocated memory is still 1.2 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...