./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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 4113f10404cd50c48db8fb998633f502f8a0b01a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:11:33,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:11:33,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:11:33,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:11:33,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:11:33,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:11:33,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:11:33,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:11:33,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:11:33,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:11:33,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:11:33,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:11:33,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:11:33,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:11:33,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:11:33,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:11:33,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:11:33,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:11:33,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:11:33,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:11:33,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:11:33,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:11:33,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:11:33,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:11:33,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:11:33,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:11:33,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:11:33,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:11:33,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:11:33,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:11:33,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:11:33,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:11:33,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:11:33,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:11:33,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:11:33,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:11:33,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:11:33,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:11:33,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:11:33,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:11:33,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:11:33,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-16 00:11:33,527 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:11:33,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:11:33,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:11:33,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:11:33,529 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:11:33,529 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-16 00:11:33,529 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-16 00:11:33,530 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-16 00:11:33,530 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-16 00:11:33,530 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-16 00:11:33,530 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-16 00:11:33,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:11:33,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:11:33,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:11:33,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:11:33,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-16 00:11:33,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-16 00:11:33,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-16 00:11:33,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:11:33,533 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-16 00:11:33,533 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:11:33,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-16 00:11:33,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:11:33,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:11:33,534 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-16 00:11:33,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:11:33,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:11:33,535 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-16 00:11:33,536 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-16 00:11:33,536 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_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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 -> 4113f10404cd50c48db8fb998633f502f8a0b01a [2019-11-16 00:11:33,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:11:33,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:11:33,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:11:33,575 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:11:33,576 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:11:33,576 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2019-11-16 00:11:33,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/data/26ec890f5/0093f7dfe4684aaaaed9e3d88d4a9ace/FLAG2e462928b [2019-11-16 00:11:33,996 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:11:33,997 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2019-11-16 00:11:34,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/data/26ec890f5/0093f7dfe4684aaaaed9e3d88d4a9ace/FLAG2e462928b [2019-11-16 00:11:34,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/data/26ec890f5/0093f7dfe4684aaaaed9e3d88d4a9ace [2019-11-16 00:11:34,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:11:34,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:11:34,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:11:34,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:11:34,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:11:34,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39974b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34, skipping insertion in model container [2019-11-16 00:11:34,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,389 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:11:34,403 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:11:34,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:11:34,575 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:11:34,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:11:34,662 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:11:34,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34 WrapperNode [2019-11-16 00:11:34,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:11:34,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:11:34,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:11:34,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:11:34,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:11:34,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:11:34,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:11:34,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:11:34,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... [2019-11-16 00:11:34,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:11:34,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:11:34,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:11:34,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:11:34,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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 [2019-11-16 00:11:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:11:34,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:11:34,901 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:11:34,901 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-16 00:11:34,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:11:34 BoogieIcfgContainer [2019-11-16 00:11:34,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:11:34,903 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-16 00:11:34,903 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-16 00:11:34,906 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-16 00:11:34,907 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:11:34,907 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:11:34" (1/3) ... [2019-11-16 00:11:34,908 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1af012d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:11:34, skipping insertion in model container [2019-11-16 00:11:34,909 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:11:34,909 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:11:34" (2/3) ... [2019-11-16 00:11:34,909 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1af012d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:11:34, skipping insertion in model container [2019-11-16 00:11:34,909 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:11:34,910 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:11:34" (3/3) ... [2019-11-16 00:11:34,911 INFO L371 chiAutomizerObserver]: Analyzing ICFG DivMinus2.c [2019-11-16 00:11:34,953 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-16 00:11:34,953 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-16 00:11:34,965 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-16 00:11:34,965 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:11:34,965 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:11:34,966 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-16 00:11:34,966 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:11:34,966 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-16 00:11:34,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-16 00:11:35,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-16 00:11:35,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:11:35,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:11:35,019 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-16 00:11:35,019 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:11:35,020 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-16 00:11:35,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-16 00:11:35,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-16 00:11:35,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:11:35,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:11:35,023 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-16 00:11:35,024 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:11:35,030 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 7#L14-2true [2019-11-16 00:11:35,031 INFO L793 eck$LassoCheckResult]: Loop: 7#L14-2true assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 3#L17-2true assume !(0 != main_~ytmp~0); 11#L16-2true main_~res~0 := 1 + main_~res~0; 7#L14-2true [2019-11-16 00:11:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:35,036 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-16 00:11:35,047 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:35,048 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332798302] [2019-11-16 00:11:35,048 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,048 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,123 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:35,125 INFO L82 PathProgramCache]: Analyzing trace with hash 39957, now seen corresponding path program 1 times [2019-11-16 00:11:35,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:35,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475424252] [2019-11-16 00:11:35,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:35,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475424252] [2019-11-16 00:11:35,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:11:35,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:11:35,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232754415] [2019-11-16 00:11:35,173 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-16 00:11:35,174 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:11:35,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:11:35,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:11:35,186 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-16 00:11:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:11:35,225 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-11-16 00:11:35,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:11:35,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-16 00:11:35,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-16 00:11:35,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 9 transitions. [2019-11-16 00:11:35,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-16 00:11:35,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-16 00:11:35,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2019-11-16 00:11:35,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:11:35,234 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-16 00:11:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2019-11-16 00:11:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-16 00:11:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-16 00:11:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-16 00:11:35,272 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-16 00:11:35,272 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-16 00:11:35,272 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-16 00:11:35,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-16 00:11:35,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-16 00:11:35,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:11:35,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:11:35,273 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-16 00:11:35,274 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-16 00:11:35,274 INFO L791 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 32#L14-2 [2019-11-16 00:11:35,274 INFO L793 eck$LassoCheckResult]: Loop: 32#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 29#L17-2 assume !!(0 != main_~ytmp~0); 30#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 33#L17-2 assume !(0 != main_~ytmp~0); 34#L16-2 main_~res~0 := 1 + main_~res~0; 32#L14-2 [2019-11-16 00:11:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-16 00:11:35,275 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:35,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728918504] [2019-11-16 00:11:35,275 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,275 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,281 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:35,282 INFO L82 PathProgramCache]: Analyzing trace with hash 38452088, now seen corresponding path program 1 times [2019-11-16 00:11:35,282 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:35,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773025136] [2019-11-16 00:11:35,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,283 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,299 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:35,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:35,299 INFO L82 PathProgramCache]: Analyzing trace with hash 925955769, now seen corresponding path program 1 times [2019-11-16 00:11:35,300 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:35,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249753487] [2019-11-16 00:11:35,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:35,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:35,318 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:35,414 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:35,414 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:35,414 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:35,415 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:35,415 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:11:35,415 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:35,415 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:35,415 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:35,416 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2019-11-16 00:11:35,416 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:35,416 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:35,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:35,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:35,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:35,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:35,589 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:35,590 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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) [2019-11-16 00:11:35,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:35,606 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 [2019-11-16 00:11:35,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:35,618 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_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:11:35,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:35,639 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:35,648 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:35,649 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_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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) [2019-11-16 00:11:35,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:35,667 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_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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) [2019-11-16 00:11:35,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:11:35,687 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 [2019-11-16 00:11:35,705 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:35,705 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=4}, {ULTIMATE.start_main_~res~0=-4}, {ULTIMATE.start_main_~res~0=1}] Lambdas: [2, 1, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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) [2019-11-16 00:11:35,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:35,723 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:35,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:11:35,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:11:35,930 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:11:35,932 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:35,932 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:35,932 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:35,932 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:35,933 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:11:35,933 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:35,933 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:35,933 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:35,933 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2019-11-16 00:11:35,933 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:35,933 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:35,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:35,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:35,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:35,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:36,069 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:11:36,074 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 [2019-11-16 00:11:36,076 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:36,076 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:36,077 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:36,077 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:36,082 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:11:36,082 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:11:36,099 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:11:36,099 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 [2019-11-16 00:11:36,100 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:36,100 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:36,100 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:36,101 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:36,103 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:11:36,103 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:11:36,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:11:36,121 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 [2019-11-16 00:11:36,122 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:36,122 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:11:36,123 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:36,123 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:36,123 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:36,124 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:11:36,124 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:11:36,133 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:11:36,141 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-16 00:11:36,141 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-11-16 00:11:36,143 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:11:36,143 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:11:36,144 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:11:36,144 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-16 00:11:36,147 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:11:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:36,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:11:36,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:36,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-16 00:11:36,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:36,250 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 [2019-11-16 00:11:36,251 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-16 00:11:36,294 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 24 states and 33 transitions. Complement of second has 7 states. [2019-11-16 00:11:36,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-16 00:11:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-16 00:11:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-16 00:11:36,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 5 letters. [2019-11-16 00:11:36,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:36,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 5 letters. [2019-11-16 00:11:36,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:36,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 10 letters. [2019-11-16 00:11:36,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:36,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2019-11-16 00:11:36,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:11:36,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 18 states and 25 transitions. [2019-11-16 00:11:36,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-16 00:11:36,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-16 00:11:36,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2019-11-16 00:11:36,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-16 00:11:36,305 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2019-11-16 00:11:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2019-11-16 00:11:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-16 00:11:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-16 00:11:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2019-11-16 00:11:36,308 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2019-11-16 00:11:36,308 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2019-11-16 00:11:36,308 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-16 00:11:36,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2019-11-16 00:11:36,309 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:11:36,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:11:36,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:11:36,309 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-16 00:11:36,310 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-16 00:11:36,310 INFO L791 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 108#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 105#L17-2 assume !!(0 != main_~ytmp~0); 106#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 110#L17-2 assume !!(0 != main_~ytmp~0); 104#L17 [2019-11-16 00:11:36,310 INFO L793 eck$LassoCheckResult]: Loop: 104#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 103#L17-2 assume !!(0 != main_~ytmp~0); 104#L17 [2019-11-16 00:11:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash 29869542, now seen corresponding path program 1 times [2019-11-16 00:11:36,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:36,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084858542] [2019-11-16 00:11:36,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,329 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:36,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 1 times [2019-11-16 00:11:36,329 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:36,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100721870] [2019-11-16 00:11:36,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,336 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1360140509, now seen corresponding path program 2 times [2019-11-16 00:11:36,337 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:36,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968618024] [2019-11-16 00:11:36,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,371 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:36,415 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:36,415 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:36,415 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:36,415 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:36,415 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:11:36,415 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:36,416 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:36,416 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:36,416 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2019-11-16 00:11:36,416 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:36,416 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:36,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,507 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:36,508 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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) [2019-11-16 00:11:36,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:36,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:11:36,521 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:36,521 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: [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:11:36,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:36,543 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:36,550 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:36,550 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_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:36,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:36,556 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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 [2019-11-16 00:11:36,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:11:36,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:11:36,605 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:11:36,607 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:36,607 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:36,607 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:36,608 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:36,608 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:11:36,608 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:36,608 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:36,608 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:36,608 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2019-11-16 00:11:36,608 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:36,608 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:36,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:36,713 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:36,713 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:11:36,713 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 [2019-11-16 00:11:36,714 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:36,714 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:36,714 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:36,715 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:36,716 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:11:36,717 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:11:36,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:11:36,720 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 [2019-11-16 00:11:36,720 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:36,721 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:11:36,721 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:36,721 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:36,721 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:36,722 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:11:36,722 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:11:36,726 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:11:36,729 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-16 00:11:36,730 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-16 00:11:36,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:11:36,730 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:11:36,731 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:11:36,731 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2019-11-16 00:11:36,731 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:11:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:36,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:11:36,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:36,768 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:11:36,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:36,792 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-16 00:11:36,792 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-16 00:11:36,823 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 32 states and 45 transitions. Complement of second has 5 states. [2019-11-16 00:11:36,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-16 00:11:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-16 00:11:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-16 00:11:36,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-16 00:11:36,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:36,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-16 00:11:36,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:36,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-16 00:11:36,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:36,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2019-11-16 00:11:36,828 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:11:36,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 40 transitions. [2019-11-16 00:11:36,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-16 00:11:36,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-16 00:11:36,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 40 transitions. [2019-11-16 00:11:36,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-16 00:11:36,830 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-16 00:11:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 40 transitions. [2019-11-16 00:11:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-11-16 00:11:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-16 00:11:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2019-11-16 00:11:36,833 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-11-16 00:11:36,835 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-11-16 00:11:36,835 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-16 00:11:36,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2019-11-16 00:11:36,841 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:11:36,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:11:36,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:11:36,848 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-11-16 00:11:36,848 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-16 00:11:36,848 INFO L791 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 200#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 204#L17-2 assume !!(0 != main_~ytmp~0); 215#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 214#L17-2 assume !!(0 != main_~ytmp~0); 198#L17 assume !(main_~ytmp~0 > 0);main_~ytmp~0 := 1 + main_~ytmp~0;main_~x~0 := 1 + main_~x~0; 210#L17-2 [2019-11-16 00:11:36,848 INFO L793 eck$LassoCheckResult]: Loop: 210#L17-2 assume !!(0 != main_~ytmp~0); 211#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 210#L17-2 [2019-11-16 00:11:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:36,849 INFO L82 PathProgramCache]: Analyzing trace with hash 925955826, now seen corresponding path program 1 times [2019-11-16 00:11:36,849 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:36,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189173600] [2019-11-16 00:11:36,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,850 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:36,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189173600] [2019-11-16 00:11:36,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:11:36,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:11:36,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934599058] [2019-11-16 00:11:36,945 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-16 00:11:36,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:36,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1572, now seen corresponding path program 2 times [2019-11-16 00:11:36,946 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:36,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465182923] [2019-11-16 00:11:36,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:36,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:36,956 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:36,996 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:36,996 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:36,997 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:36,997 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:36,997 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:11:36,997 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:36,997 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:36,997 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:36,997 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2019-11-16 00:11:36,997 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:36,998 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:36,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,077 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:37,077 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:11:37,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:37,090 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:11:37,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:11:37,108 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:37,122 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:11:37,124 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:37,125 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:37,125 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:37,125 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:37,125 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:11:37,125 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:37,125 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:37,125 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:37,126 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2019-11-16 00:11:37,126 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:37,126 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:37,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,220 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:37,221 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:11:37,221 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 [2019-11-16 00:11:37,222 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:37,222 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:11:37,222 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:37,222 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:37,222 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:37,223 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:11:37,223 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:11:37,226 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:11:37,228 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-16 00:11:37,228 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-16 00:11:37,229 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:11:37,229 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:11:37,229 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:11:37,229 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2019-11-16 00:11:37,229 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:11:37,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:37,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:11:37,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:37,274 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:11:37,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:37,275 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 [2019-11-16 00:11:37,275 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 14 Second operand 3 states. [2019-11-16 00:11:37,307 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 14. Second operand 3 states. Result 32 states and 47 transitions. Complement of second has 5 states. [2019-11-16 00:11:37,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-16 00:11:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-16 00:11:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-16 00:11:37,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-16 00:11:37,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:37,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-16 00:11:37,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:37,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-16 00:11:37,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:37,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 47 transitions. [2019-11-16 00:11:37,312 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-16 00:11:37,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 30 states and 44 transitions. [2019-11-16 00:11:37,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-16 00:11:37,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-16 00:11:37,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2019-11-16 00:11:37,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-16 00:11:37,314 INFO L688 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-11-16 00:11:37,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2019-11-16 00:11:37,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-11-16 00:11:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-16 00:11:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2019-11-16 00:11:37,317 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-11-16 00:11:37,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:11:37,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:11:37,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:11:37,318 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2019-11-16 00:11:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:11:37,336 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2019-11-16 00:11:37,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:11:37,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2019-11-16 00:11:37,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-16 00:11:37,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 18 transitions. [2019-11-16 00:11:37,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-16 00:11:37,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-16 00:11:37,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2019-11-16 00:11:37,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-16 00:11:37,339 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-16 00:11:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2019-11-16 00:11:37,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-11-16 00:11:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-16 00:11:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-11-16 00:11:37,340 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-16 00:11:37,341 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-16 00:11:37,341 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-16 00:11:37,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2019-11-16 00:11:37,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-16 00:11:37,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:11:37,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:11:37,342 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2019-11-16 00:11:37,343 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-16 00:11:37,343 INFO L791 eck$LassoCheckResult]: Stem: 344#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~ytmp~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~ytmp~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 345#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 342#L17-2 assume !!(0 != main_~ytmp~0); 343#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 346#L17-2 assume !(0 != main_~ytmp~0); 349#L16-2 main_~res~0 := 1 + main_~res~0; 347#L14-2 assume !!(main_~x~0 >= main_~y~0 && main_~y~0 > 0);main_~ytmp~0 := main_~y~0; 348#L17-2 assume !!(0 != main_~ytmp~0); 351#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 350#L17-2 assume !!(0 != main_~ytmp~0); 341#L17 [2019-11-16 00:11:37,343 INFO L793 eck$LassoCheckResult]: Loop: 341#L17 assume main_~ytmp~0 > 0;main_~ytmp~0 := main_~ytmp~0 - 1;main_~x~0 := main_~x~0 - 1; 340#L17-2 assume !!(0 != main_~ytmp~0); 341#L17 [2019-11-16 00:11:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1275475969, now seen corresponding path program 2 times [2019-11-16 00:11:37,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:37,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025052386] [2019-11-16 00:11:37,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:37,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:37,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:37,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025052386] [2019-11-16 00:11:37,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666862637] [2019-11-16 00:11:37,443 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:11:37,472 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:11:37,472 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:11:37,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:11:37,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:37,561 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:11:37,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-16 00:11:37,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836780370] [2019-11-16 00:11:37,562 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-16 00:11:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:37,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1662, now seen corresponding path program 3 times [2019-11-16 00:11:37,562 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:11:37,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7940660] [2019-11-16 00:11:37,563 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:37,563 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:11:37,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:11:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:11:37,568 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:11:37,595 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:37,596 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:37,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:37,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:37,596 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-16 00:11:37,596 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:37,596 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:37,596 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:37,597 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2019-11-16 00:11:37,597 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:37,597 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:37,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,672 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:37,672 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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 [2019-11-16 00:11:37,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:37,678 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:37,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:11:37,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:11:37,698 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:37,698 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=4}, {ULTIMATE.start_main_~x~0=-7}, {ULTIMATE.start_main_~x~0=2}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/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 [2019-11-16 00:11:37,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:37,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:11:37,707 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:37,707 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:37,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:37,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:11:37,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-16 00:11:37,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-16 00:11:37,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-16 00:11:37,722 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_12ed4c18-24fd-47e0-9a5a-bf088f8e22d1/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:37,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-16 00:11:37,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-16 00:11:37,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-16 00:11:37,776 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:11:37,776 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:11:37,776 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:11:37,776 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:11:37,776 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:11:37,776 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:11:37,776 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:11:37,776 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:11:37,777 INFO L131 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2019-11-16 00:11:37,777 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:11:37,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:11:37,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:11:37,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:11:37,897 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:11:37,898 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 [2019-11-16 00:11:37,898 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:37,898 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:11:37,899 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:37,899 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:37,899 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:37,899 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:11:37,899 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:11:37,901 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:11:37,902 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 [2019-11-16 00:11:37,902 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:37,902 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:37,903 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:37,903 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:37,904 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:11:37,904 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:11:37,907 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:11:37,908 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 [2019-11-16 00:11:37,908 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:37,908 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:37,908 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:37,909 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:37,910 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:11:37,910 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:11:37,912 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:11:37,912 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 [2019-11-16 00:11:37,913 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:11:37,913 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:11:37,913 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:11:37,913 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:11:37,913 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:11:37,914 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:11:37,914 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:11:37,916 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:11:37,918 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-16 00:11:37,918 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-16 00:11:37,919 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:11:37,919 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-16 00:11:37,919 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:11:37,919 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0) = 1*ULTIMATE.start_main_~ytmp~0 Supporting invariants [] [2019-11-16 00:11:37,920 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-16 00:11:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:37,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:11:37,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:37,960 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:11:37,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:37,975 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-16 00:11:37,975 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-16 00:11:37,984 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 20 states and 24 transitions. Complement of second has 5 states. [2019-11-16 00:11:37,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-16 00:11:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-16 00:11:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-16 00:11:37,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-16 00:11:37,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:37,986 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-16 00:11:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:38,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:11:38,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:38,013 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:11:38,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:38,023 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-16 00:11:38,023 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-16 00:11:38,042 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 5 states. [2019-11-16 00:11:38,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-16 00:11:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-16 00:11:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-16 00:11:38,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-16 00:11:38,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:38,043 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-16 00:11:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:11:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:38,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:11:38,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:11:38,070 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:11:38,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:11:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:11:38,088 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-16 00:11:38,088 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-16 00:11:38,099 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 6 states. [2019-11-16 00:11:38,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-16 00:11:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-16 00:11:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-16 00:11:38,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-16 00:11:38,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:38,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 12 letters. Loop has 2 letters. [2019-11-16 00:11:38,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:38,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-16 00:11:38,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:11:38,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2019-11-16 00:11:38,103 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-16 00:11:38,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2019-11-16 00:11:38,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-16 00:11:38,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-16 00:11:38,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-16 00:11:38,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:11:38,104 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:11:38,104 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:11:38,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:11:38,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:11:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:11:38,105 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2019-11-16 00:11:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:11:38,105 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-16 00:11:38,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-16 00:11:38,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-16 00:11:38,105 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-16 00:11:38,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:11:38,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-16 00:11:38,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-16 00:11:38,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-16 00:11:38,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:11:38,106 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:11:38,106 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:11:38,106 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:11:38,106 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-16 00:11:38,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:11:38,107 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-16 00:11:38,107 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-16 00:11:38,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:11:38 BoogieIcfgContainer [2019-11-16 00:11:38,112 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-16 00:11:38,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:11:38,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:11:38,112 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:11:38,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:11:34" (3/4) ... [2019-11-16 00:11:38,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-16 00:11:38,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:11:38,117 INFO L168 Benchmark]: Toolchain (without parser) took 3742.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -218.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:11:38,118 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:11:38,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:11:38,119 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:11:38,119 INFO L168 Benchmark]: Boogie Preprocessor took 16.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:11:38,120 INFO L168 Benchmark]: RCFGBuilder took 191.89 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:11:38,120 INFO L168 Benchmark]: BuchiAutomizer took 3208.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -59.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:11:38,121 INFO L168 Benchmark]: Witness Printer took 3.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-16 00:11:38,124 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 288.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.77 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 191.89 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3208.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -59.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 24 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 49 SDtfs, 44 SDslu, 16 SDs, 0 SdLazy, 60 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax164 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq172 hnf94 smp84 dnf100 smp100 tf111 neg97 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...