./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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 4c761fb15c9d367876fc9f1553874e9680fa1668 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:21:13,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:21:13,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:21:13,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:21:13,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:21:13,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:21:13,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:21:13,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:21:13,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:21:13,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:21:13,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:21:13,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:21:13,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:21:13,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:21:13,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:21:13,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:21:13,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:21:13,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:21:13,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:21:13,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:21:13,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:21:13,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:21:13,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:21:13,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:21:13,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:21:13,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:21:13,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:21:13,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:21:13,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:21:13,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:21:13,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:21:13,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:21:13,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:21:13,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:21:13,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:21:13,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:21:13,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:21:13,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:21:13,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:21:13,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:21:13,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:21:13,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 04:21:13,596 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:21:13,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:21:13,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:21:13,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:21:13,598 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:21:13,598 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 04:21:13,598 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 04:21:13,598 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 04:21:13,598 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 04:21:13,599 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 04:21:13,599 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 04:21:13,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:21:13,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:21:13,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:21:13,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:21:13,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 04:21:13,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 04:21:13,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 04:21:13,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:21:13,601 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 04:21:13,601 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:21:13,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 04:21:13,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:21:13,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:21:13,602 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 04:21:13,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:21:13,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:21:13,602 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 04:21:13,603 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 04:21:13,603 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_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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 -> 4c761fb15c9d367876fc9f1553874e9680fa1668 [2019-11-20 04:21:13,743 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:21:13,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:21:13,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:21:13,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:21:13,757 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:21:13,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-20 04:21:13,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/data/37a5c02ef/9bfb48403e8b4f0fa1786edaa1a444d3/FLAGd7df246cb [2019-11-20 04:21:14,216 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:21:14,218 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-20 04:21:14,223 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/data/37a5c02ef/9bfb48403e8b4f0fa1786edaa1a444d3/FLAGd7df246cb [2019-11-20 04:21:14,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/data/37a5c02ef/9bfb48403e8b4f0fa1786edaa1a444d3 [2019-11-20 04:21:14,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:21:14,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:21:14,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:21:14,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:21:14,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:21:14,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46659513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14, skipping insertion in model container [2019-11-20 04:21:14,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,258 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:21:14,276 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:21:14,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:21:14,425 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:21:14,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:21:14,507 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:21:14,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14 WrapperNode [2019-11-20 04:21:14,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:21:14,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:21:14,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:21:14,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:21:14,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:21:14,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:21:14,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:21:14,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:21:14,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... [2019-11-20 04:21:14,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:21:14,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:21:14,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:21:14,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:21:14,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:14,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:21:14,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:21:14,729 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:21:14,729 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 04:21:14,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:21:14 BoogieIcfgContainer [2019-11-20 04:21:14,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:21:14,731 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 04:21:14,731 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 04:21:14,734 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 04:21:14,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:21:14,735 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 04:21:14" (1/3) ... [2019-11-20 04:21:14,736 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@161bcc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:21:14, skipping insertion in model container [2019-11-20 04:21:14,736 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:21:14,736 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:21:14" (2/3) ... [2019-11-20 04:21:14,736 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@161bcc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:21:14, skipping insertion in model container [2019-11-20 04:21:14,736 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:21:14,737 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:21:14" (3/3) ... [2019-11-20 04:21:14,738 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-20 04:21:14,778 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 04:21:14,778 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 04:21:14,778 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 04:21:14,779 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:21:14,779 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:21:14,779 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 04:21:14,779 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:21:14,779 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 04:21:14,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 04:21:14,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:14,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:21:14,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:21:14,813 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:21:14,813 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 04:21:14,813 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 04:21:14,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 04:21:14,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:14,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:21:14,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:21:14,815 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:21:14,815 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 04:21:14,820 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~x~0 >= 0 && main_~y~0 >= 0; 7#L19-2true [2019-11-20 04:21:14,820 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 9#L19true assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 7#L19-2true [2019-11-20 04:21:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-20 04:21:14,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:14,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088118657] [2019-11-20 04:21:14,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:14,911 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:14,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-20 04:21:14,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:14,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463045222] [2019-11-20 04:21:14,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:14,927 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:14,929 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-20 04:21:14,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:14,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154935355] [2019-11-20 04:21:14,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:14,943 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:15,069 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2019-11-20 04:21:15,089 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:15,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:15,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:15,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:15,091 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:21:15,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:15,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:15,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-11-20 04:21:15,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:15,092 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:15,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,242 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:15,243 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:15,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:21:15,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:21:15,259 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_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:15,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:21:15,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:21:15,287 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_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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) [2019-11-20 04:21:15,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:15,298 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_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:21:15,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:21:15,448 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:21:15,449 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:15,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:15,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:15,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:15,450 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:21:15,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:15,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:15,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-11-20 04:21:15,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:15,450 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:15,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,537 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:15,542 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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) [2019-11-20 04:21:15,566 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:21:15,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:21:15,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:21:15,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:21:15,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:21:15,583 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:21:15,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,593 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:21:15,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:21:15,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:21:15,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:21:15,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:21:15,609 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:21:15,609 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:21:15,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:21:15,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:21:15,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:21:15,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:21:15,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:21:15,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:21:15,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:21:15,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:21:15,632 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:21:15,646 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 04:21:15,647 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,657 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:21:15,657 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:21:15,657 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:21:15,658 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 04:21:15,676 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:21:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:15,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:21:15,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:15,730 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:21:15,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:15,746 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 04:21:15,747 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-20 04:21:15,785 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-11-20 04:21:15,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:21:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:21:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-20 04:21:15,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 04:21:15,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:15,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 04:21:15,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:15,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-20 04:21:15,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:15,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-20 04:21:15,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:15,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-20 04:21:15,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 04:21:15,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-20 04:21:15,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-20 04:21:15,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:21:15,800 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-20 04:21:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-20 04:21:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 04:21:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 04:21:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-20 04:21:15,822 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-20 04:21:15,822 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-20 04:21:15,822 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 04:21:15,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-20 04:21:15,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:15,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:21:15,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:21:15,823 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 04:21:15,823 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 04:21:15,824 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 73#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 74#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 79#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 75#L19-2 [2019-11-20 04:21:15,824 INFO L796 eck$LassoCheckResult]: Loop: 75#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 76#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 75#L19-2 [2019-11-20 04:21:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-20 04:21:15,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:15,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788651393] [2019-11-20 04:21:15,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:15,835 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:15,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-20 04:21:15,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:15,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972673610] [2019-11-20 04:21:15,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:15,843 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:15,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-11-20 04:21:15,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:15,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581679176] [2019-11-20 04:21:15,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:15,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581679176] [2019-11-20 04:21:15,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:21:15,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 04:21:15,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810110365] [2019-11-20 04:21:15,944 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:15,944 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:15,944 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:15,944 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:15,945 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:21:15,945 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:15,945 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:15,945 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:15,945 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-11-20 04:21:15,945 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:15,945 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:15,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:15,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:16,015 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:16,016 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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 [2019-11-20 04:21:16,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:16,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:21:16,030 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:21:16,030 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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 [2019-11-20 04:21:16,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:16,041 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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) [2019-11-20 04:21:16,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:21:16,066 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:16,241 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:21:16,244 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:16,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:16,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:16,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:16,244 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:21:16,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:16,245 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:16,245 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:16,245 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-11-20 04:21:16,245 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:16,245 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:16,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:16,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:16,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:16,313 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:16,313 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:16,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:21:16,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:21:16,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:21:16,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:21:16,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:21:16,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:21:16,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:21:16,336 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:16,345 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:21:16,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:21:16,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:21:16,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:21:16,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:21:16,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:21:16,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:21:16,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:21:16,361 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:21:16,370 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:21:16,370 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:16,381 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:21:16,381 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:21:16,381 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:21:16,381 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 04:21:16,383 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:21:16,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:16,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:21:16,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:16,406 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:21:16,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:16,407 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 04:21:16,407 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 04:21:16,423 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-20 04:21:16,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:21:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:21:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-20 04:21:16,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 04:21:16,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:16,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 04:21:16,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:16,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-20 04:21:16,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:16,425 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-11-20 04:21:16,426 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:16,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-11-20 04:21:16,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 04:21:16,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 04:21:16,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-20 04:21:16,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:21:16,427 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-20 04:21:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-20 04:21:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 04:21:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 04:21:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-20 04:21:16,429 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-20 04:21:16,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:21:16,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:21:16,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:21:16,433 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 5 states. [2019-11-20 04:21:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:21:16,456 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-11-20 04:21:16,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:21:16,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-20 04:21:16,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:16,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2019-11-20 04:21:16,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 04:21:16,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 04:21:16,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2019-11-20 04:21:16,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:21:16,459 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-20 04:21:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2019-11-20 04:21:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2019-11-20 04:21:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 04:21:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-20 04:21:16,460 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-20 04:21:16,460 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-20 04:21:16,460 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 04:21:16,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-20 04:21:16,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:16,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:21:16,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:21:16,461 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 04:21:16,461 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 04:21:16,462 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 158#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 160#L19 [2019-11-20 04:21:16,462 INFO L796 eck$LassoCheckResult]: Loop: 160#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 159#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 160#L19 [2019-11-20 04:21:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-11-20 04:21:16,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:16,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332999495] [2019-11-20 04:21:16,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:16,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:16,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:16,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-11-20 04:21:16,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:16,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588942057] [2019-11-20 04:21:16,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:16,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:16,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:16,482 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2019-11-20 04:21:16,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:16,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812018229] [2019-11-20 04:21:16,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:16,493 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:16,539 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:16,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:16,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:16,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:16,539 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:21:16,539 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:16,540 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:16,540 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:16,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-11-20 04:21:16,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:16,540 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:16,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:16,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:16,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:16,600 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:16,600 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:21:16,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:16,618 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:16,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:21:16,624 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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) [2019-11-20 04:21:16,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:16,642 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:21:16,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:21:16,662 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,027 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:21:17,029 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:17,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:17,030 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:17,030 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:17,030 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:21:17,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:17,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:17,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-11-20 04:21:17,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:17,031 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:17,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,086 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:17,087 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,101 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:21:17,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:21:17,103 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:21:17,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:21:17,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:21:17,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:21:17,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:21:17,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:21:17,108 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:21:17,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:21:17,121 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:21:17,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:21:17,141 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:21:17,141 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:21:17,142 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 04:21:17,144 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,175 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:17,200 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 04:21:17,201 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-20 04:21:17,210 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2019-11-20 04:21:17,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:21:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:21:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 04:21:17,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 04:21:17,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 04:21:17,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-20 04:21:17,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-20 04:21:17,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:17,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2019-11-20 04:21:17,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 04:21:17,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 04:21:17,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-20 04:21:17,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:21:17,214 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 04:21:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-20 04:21:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-20 04:21:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 04:21:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-20 04:21:17,215 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 04:21:17,215 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 04:21:17,215 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 04:21:17,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-11-20 04:21:17,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 04:21:17,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:21:17,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:21:17,217 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-20 04:21:17,217 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 04:21:17,217 INFO L794 eck$LassoCheckResult]: Stem: 211#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 212#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 213#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 214#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 215#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 216#L19 [2019-11-20 04:21:17,218 INFO L796 eck$LassoCheckResult]: Loop: 216#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 217#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 216#L19 [2019-11-20 04:21:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2019-11-20 04:21:17,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:17,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276206085] [2019-11-20 04:21:17,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:17,229 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:17,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:17,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2019-11-20 04:21:17,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:17,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958523062] [2019-11-20 04:21:17,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:21:17,237 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:21:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2019-11-20 04:21:17,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:21:17,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85302679] [2019-11-20 04:21:17,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:21:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:17,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85302679] [2019-11-20 04:21:17,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:21:17,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 04:21:17,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867689367] [2019-11-20 04:21:17,300 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:17,300 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:17,300 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:17,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:17,300 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:21:17,300 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,300 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:17,300 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:17,301 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-11-20 04:21:17,301 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:17,301 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:17,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,375 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:17,375 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:21:17,389 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:21:17,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:21:17,667 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:21:17,668 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:21:17,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:21:17,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:21:17,669 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:21:17,669 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:21:17,669 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:21:17,669 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:21:17,669 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-11-20 04:21:17,669 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:21:17,669 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:21:17,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:21:17,761 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:21:17,761 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:21:17,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:21:17,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:21:17,775 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:21:17,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:21:17,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:21:17,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:21:17,776 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:21:17,776 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,780 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:21:17,784 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 04:21:17,785 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a5acf2-0208-4b13-8ae0-209c8d3b512b/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:21:17,790 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:21:17,790 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:21:17,790 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:21:17,790 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 04:21:17,792 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:21:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,833 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:17,851 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 04:21:17,851 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-20 04:21:17,861 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2019-11-20 04:21:17,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-20 04:21:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:21:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-11-20 04:21:17,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 04:21:17,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,864 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:21:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,894 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:17,911 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 [2019-11-20 04:21:17,911 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-20 04:21:17,915 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2019-11-20 04:21:17,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-20 04:21:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:21:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-11-20 04:21:17,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 04:21:17,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,917 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:21:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:21:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:21:17,939 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:21:17,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:21:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:21:17,957 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 [2019-11-20 04:21:17,957 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-20 04:21:17,974 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2019-11-20 04:21:17,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:21:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:21:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 04:21:17,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 04:21:17,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-20 04:21:17,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-20 04:21:17,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:21:17,978 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-20 04:21:17,979 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:21:17,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-20 04:21:17,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:21:17,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:21:17,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:21:17,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:21:17,980 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:21:17,980 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:21:17,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:21:17,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:21:17,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:21:17,980 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-20 04:21:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:21:17,981 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 04:21:17,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:21:17,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 04:21:17,981 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:21:17,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:21:17,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:21:17,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:21:17,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:21:17,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:21:17,982 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:21:17,982 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:21:17,982 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:21:17,982 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 04:21:17,982 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:21:17,982 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:21:17,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 04:21:17,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 04:21:17 BoogieIcfgContainer [2019-11-20 04:21:17,989 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 04:21:17,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:21:17,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:21:17,990 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:21:17,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:21:14" (3/4) ... [2019-11-20 04:21:17,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:21:17,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:21:17,996 INFO L168 Benchmark]: Toolchain (without parser) took 3753.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -154.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:21:17,997 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:21:17,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:21:17,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:21:17,998 INFO L168 Benchmark]: Boogie Preprocessor took 15.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:21:17,999 INFO L168 Benchmark]: RCFGBuilder took 178.02 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:21:17,999 INFO L168 Benchmark]: BuchiAutomizer took 3258.84 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:21:18,000 INFO L168 Benchmark]: Witness Printer took 4.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:21:18,003 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.41 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 15.11 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 178.02 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3258.84 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: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y + -1 * x and consists of 4 locations. One deterministic module has affine ranking function y + -1 * x and consists of 3 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 31 SDtfs, 29 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...